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NUST N T QU STIONNUST NET-1 Mcq's

1)total number of arrangement if P is fixed for word Pakistan?

2)express sin in cos if angle is A .options were cos(9o-A) etc

3)what is the change in which no heat enters or leaves the system

4)whai is dy/dx called?

5)what is mass spectrometer is used for?6) impedance is what at resonance in a series parallel circuit?

7)sine of relcttion/sone of refractions gives?

8)what are the dimension of weight?

9)max force if 1 kg mass has 2.4 acceleration?

10)resolving power increases with ?

11)atomic bomb comprised of ?

12)f * t has same units as 1)impulse .2)momentums option there was both 1 and 2 kinda thing?

13)when earthquake occurs what happens to entropy?

14)radian and steraradian are?

15)what does spectrometer is used for?

16)what should hapen to make an element positive?

17)what is e/m equal to?

18)moment arm equals to?19)what shows nature wave of particales?

20)in a single slit exp,from how many point sorces wave interfere?

21)dimension tells?

22)dimension of angular momentum?

in iq 2 questions were code wale.maths ma 10 conics.15 geometery 15 sequence series 2 determinet

wale..trigonometry..limit ka eik question. Complex numbers 2 4

integration 3 4..diff 2 3..sets 1 2..permutation and combination 3 4...vector 1 2...english 1 antonym and 1 synony,

trival ka opposite phucha mangnemous tha,.,

chemistry?i never opened the fsc chem books so i dont kno...but it was all bookish..

1. the origin of field of force is1. spin motion of nucleus2. charge on electron3. mass of the object4. not yet known

2. the force experienced by unit positive charge place3d at a point in electric field is knownas

1. electric field intensity2. electric force3. magnetic field intensity4. capacitance

3. the electric intensity at infinite distance from the point charge is1. zero2. infinite3. 1 volt /m4. Negative

4. Two point charges of 16 micro C and 4 micro C are separated by a distance of 3.0 m, thespot on the line joining the two charges where electric field is zero is

1. Between the two charges

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NUST N T QU STION2. Left of 4 micro C charge3. Right of 4 micro C charge4. Right of 16 micro C charge

5. If a close surface contains two equal and opposite charges, the net electric flux from thesurface will be

1.

Positive2. Negative3. Zero4. None of these

6. Electric flux is a1. Vector quantity2. Scalar quantity3. Tensor4. Abstract

7. A charge of 0.1 C accelerated through a potential difference of 1000 V acquires K.E1. 200 J2.

1000 J3. 400 J

4. 100 J8. The value of relative permittivity constant for air is

1. 1.0062. 1.00063. 1.0000064. 1.6

9. Sharks have special organs, called the ampullae of lorenzini that detect potentialdifference of the order of

1. Milli volt2.

Micro volt3. Nano volt

4. Pico volt10.The motion of windshield wipers of cars is the application of

1. Energy stored in capacitor2. Charging and discharging of capacitor3. Energy density4. None of these

11.The capacitance of a capacitor increases by1. Decreasing , separation between plates2. Increasing area of plates3. Placing dielectric between plates4. All

12.Who introduced the concept of electric o electric field lines1. Michael Fa raday2. Maxwell3. Dalton4. Newton

13.Which one is a photo conductor

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NUST N T QU STION1. Selenium2. Sodium coated oxides3. Potassium coated oxide4. All

14.Two points have a difference of potential of 10 volts. Work done in moving a charge of 5coulomb from one point to another is1. 2j

2. 50 J3. 10 J4. 12J

15.A charged oil drop is stationary between two metallic plates. If the drop caries a chargeof q C and mass m kg, the PD between plates is

1. F/q2. qE3. mg/d4. mgd/q

16.in ERG, the graph is plotted between time and1. current

2. potential difference3. forc3e4. work

17.pyrex glass is an example of1. conductor2. insulator3. semi conductor4. dielectric

18.the vessel containing electrolyte and two electrodes is known as1.

acquifier2. voltameter

3. primary cell4. voltmeter

19.Rheostate consists of a wire of1. Manganin2. Silver3. Aluminium4. Molybedenum

20.If the fourth band is silver then the tolerance is1. 10 %2. 20 %3. 5%4. 50%

21.A zero ohm resistor is indicated by1. orange band2. Four black band3. One black band4. Red band

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NUST N T QU STION22.If length of wire is doubled uniformly by stretching the wire then its resistance becomes

1. Four times2. One fourth3. Two times4. Remains same

23.The terminal potential difference is greater than emf of a cell when1. R = infinity

2. Battery is supplying current3. R = 04. When battery is being charged

24.The total flux through a closed surface depends upon1. Shape of closed surface2. Geometer of the closed surface3. Charge enclosed by the surface4. All of the above

25.Two plates are 2 cm apart. A potential difference of 10 V is applied between them, theelectric field between the poates is1. 200 N/C

2. 2 N/C3. 500 N/C4. 5 N/C

26.A 40 watt 100 watt and 150 watt bulbs are connected in series across 220 volt supply.Which bulb will be brightest?

1. 150 watt2. 100 watt3. 40 watt4. All have same brightness

27.An ideal voltmeter has resistance1. finite

2. Zero3. Constant4. Infinite

28.When the potential difference is applied across the conductor a directional flow ofelectrons sets up. The drift velocity of electrons _ with increasing temperature

1. Increases2. Decreases3. Constant4. First increase then decreases

29.A 60 watt lamp operates at 50 % effiency. How much energy is dissipatedin 10 sec30.200 J31.300 J32.600 J33.None of these34.A thermistor measures very low temperature near

1. 5 C2. 5K

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NUST N T QU STION3. 10 C4. 10k

35.Resistance offered by a meter cube of a material is known as1. Conductivity2. Resistivity3.

Inductivity4. Conductance

36.An electrical motor has power 500 W the current drawn through it is 4A Find potentialdifference

1. 126 V2. 127 V3. 125 V4. 120 V

37.One thousand watts of electric power is transmitted to a device by means of two wires,each of which has resistance of 2 oh. If the resulting potential difference across the

decive is 1000 volts the potential difference across the source supplying power is

1.

240 V2. 100 V3. 50 V4. 200 V

38.An electric charge on the surface of a hallow metal sphere is doubled, the electric fieldintensity at middle, inside the sphere

1. Increases decreases2. Remains same3. Zero

39.Modern periodic table has number of groups and number of periods1. 8,122.

12,73. 7,8

4. 8,740. F block elements are also called

1. Outer transition element2. Inner trasition elements3. Alkaline earth elements4. Coinage earth metal

41.Which one of the following elements has the non variable oxidation state1. Berylium2. Chlorine3. Bromine4. Nitrogen

42.The elements of 1 A and II A group are obtained by the electrolysis of their molten1. Chlorides2. Carbonates3. Nitrate4. Oxides

43.Which element is the most electropositive in the periodic table

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NUST N T QU STION1. Barium2. Calcium3. Potassium4. Cesium

44.What are the products of the thermal decomposition of lithium nitrate?1.

Lithiumnitride and oxygen2. Lithium oxide, nitrogen and oxygen

3. Lithium osice, nitrogen dioxide and oxygen4. Lithium oxide and nitrogen

45.Uniqueness of mendeleevs periodic table is that he1. Determined atomic mass of elements2. Classified elements inot 12 periods3. Left empty spaces for undiscovered elements4. Placed Na, K with Ca and Mg

46.Which one of the following determines the position of an element in the periodic table?1. Chemical reactivity2.

Number of electorns in outer orbital3. First ionization energy

4. Number of protons in the nucleus of its atom47.Lattice energy of carbonate of alkaline earth metals increases down the grup because of

1. Increase in the size of cation2. Decrease in polarization3. Both a and c4. None of the above

48.As we move from groups IA to groups IIA which of the following trend is incorrect1. Metallic radus decreases2. First ionization energy increases3.

Thermal stability decreases4. Solubility of compounds

49.All the following elements of IA group form super oxide except1. Na2. Rb3. K4. Cs

50.Group of elements in the modern periodic table is based on1. Core electrons2. Inert electron pair3. Valence electrons4. Lone pair of electron

51.Which of the following elements imparts brick red color in the flame1. Na2. Ca3. K4. Sr

52.Which of the scientists experimentally proved that element should be arranged in theperiodic table on the basic of atomic number and not on the basic of atomic mass

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NUST N T QU STION1. Mendeleev2. Newland3. Dobereiner4. Moseley

53.Elements in the periodic table are classified into four blocks. This classification is bsedupon1. Valence orbital

2. Sub-shell3. Shell4. All

54.Which of the following elements has greatest value of first ionization energy1. N2. O3. C4. B

55.Which halogenhas greatest value of electron affinity1.

F2. Cl

3. Br4. I

56.Ionization energy is the index to the metallic character. The element which have1. Low ionization energy meals2. High ionization energy nonmetals3. Intermediate metalloids4. All

57.Which is incorrect statement?1. 1st electron affinity value is always negative2.

Term electronegativity is associated with molecule3. Electron affinity is associated with atom

4. Oxidation number increases down the group58.Which statement about oxidation number is incorrect

1. Oxidation number increases along the period2. Oxidation state is the apparent charge on an atom in the compound3. Transition elements show more than one oxidation number4. Maximum oxidation number is +7

59.Which of the element is the best conductor of electricity ?1. Zn2. Fe3. Cu4. Ca

60.Hydration energy depends on1. Charge on ion \2. Size of ion3. Both a and b4. None of these

61.Hydrogen has which of the following properties?

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NUST N T QU STION62. it act as reducing agent like IA group elements63.It shows resemble with IA, IVA,VIIA group64.During electrolysis it is collected at cathode like metals65.All66.Keeping in view the size of atoms, which order is correct one?

1.

Mg>Sr2. Ba>Mg3. Cl>i4. Lu>Ce

67.Which is incorrect?1. All the metal are good conductors of electricity2. All the metals are good conductor of heat3. All the metals form positive ions4. All the metals from acidic oxides

68.Which one of the following minerals has no calcium1. Gypsum2.

Dolomite3. Calcite

4. Carnallite69.Which of the following eolement can only react with NaOH

1. Be2. Mg3. Ca4. Ba

70.Which of the following oxides in insoluble ion H2O1. BeO2. MgO3.

Both4. CaO

71.Na is obtained by electrolysis of molten NaCl by72. galvanic cell73.Down cell74.Nelson cell75.Fuel cell76.Which is the use of sulphur?

1. Essential constituent of plant2. Has influence on chlorophyll development of leaves3. For the enlargement of root system4. All

77.Which of the element form polymeric halides?1. Na2. Al3. S4. C

78.Which is nt a use of lime1. As dehydrating agent

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NUST N T QU STION2. In iron extraction3. Manufacturing of bleaching powder4. As flux in welding

79.Oxides of beryllium are1. Acidic2.

Basic3. Amphoteric

4. Neutral80.In electrolysis of aqueous solution of NaCl the primary product obtained at anode

electrode is1. Na2. Cl23. NaOH4. NaCl

Decrease in force is maximum for?? (Distilled water)F is force btween two charges and charge 2Q is attached with a charge and then seperated. The

new force will be??

Body falling due to gravity.. Direction of acceleraion????Unit of electric intensity???

will current pass through a capacitor attached to an DC source??

peed of electrons through a conductor which is not given any potential diffrnce??

V directly proportional to I.. What is constant ??/ (R)Which material is used as common condustor in daily use?? (Copper)

Induced emf depends upon...???

Ac is converted in to Dc by??? (rectifier)...

Is dafa test main Scientist k name b puchay huay thay,...Reactance of inductor is equal to??? ( 1/wL) which has wavelength greater than red light...??/ (

Infrared)...

waht is unit of electric intensity?If frequency of indutor increase then its inductance will?

A diamond is? (noncondutor)

If capacitor is connected with battery and its fully charged then current follow? (current notflow?

What is indicators?

Noble gases exist as? (free state)

Which group has max. I.E 1Aor2A?What is fourh power of x in sixth power of (2-x)?

MOost mcqs of math in chp6 last exercise?

What is the sum first 50 real no's?

What is unit of momentum?

Electromagnetic radiation have grater wavelenght than red light?

Product of two matrix is possible?What is meaning of ''enigma''?

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NUST N T QU STIONsin60 equal to?

What is formula of Tan@?

What is formula of cos2@?

If Xrays fall on which following to produce photoelectrons?(plastic)First question of 2.10? as mcq

Highest I.E of noble gas?Na is?Which of following are uses of spectrometer?

Entropy of Universal in natural process? (increses)

Colligative properties depend on?Find energy of inductor lenth and current are given? (1/2LI2)

In house which is connected in series? (fans,bulb,tubes,none)?

Boyl's law is applicable for those gases?

The equation which doesnot change by replacing x with 1/x is known as :

A.linear

B.quadraticC.proportionalD.none

A basic character of alkali oxide?

Velocity of electron on outermost shell is ?

MaximumMinimum

Zero

Intermediate

Chemical composition of sindhur?

Fluminate means?

Centrifugal force of a body depends upon ?

A weightB mass

C volume

D none

Value of weins constant?

Synonym were dowdy , blemish , fluminate , amiable

Net 1

Transmution is decay of

A alpha particleB beta particle

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NUST N T QU STIONstions from 28th april test.

1. Opposite in meaning of the word throttle.2. Amity means.

3. Penicillium belongs to (deutromycota).4. Ionization energy of which noble gas is highest.5. Ballistic missile are (unpowered and unguided).

28 april NET questions.....

boiling point of benzene?? ans 80.2

artrial wall consists of how many layers?? ans 3

ARID is most similr to??? ans Barrenwater circulates throughout the world by?? ans i thnk water cycle

jargon is similar to?? ans comprehensible vocabulary

glycolate is converted into glycine in?/ ans peroxisomesHcl is secreted by?? ans oxyntic cellsanalogy : propose,stipulate??

.

The controlled Fission reaction is due to presence of

a. core

b. moderator

c. heavy waterd. control rods

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NUST N T QU STION

Select the odd oneA. March

B. may

c. Julyd. October

342 grams of sugar and 12 grams of carbon haveA. same atomsB. sugar has greater

c. carbon has greater

d. insufficient data

1. boiling point of benzene.

2. opposite of forlorn.3. meaning of bear out?

4. bait means?

5. third important vessel in earthworm?6. do lymphatic system have valves?

7. tiger : tigress ..... ans- fox : vixen

Decrease in force is maximum for?? (Distilled water)

F is force btween two charges and charge 2Q is attached with a charge and then seperated. Thenew force will be??

Body falling due to gravity.. Direction of acceleraion????

Unit of electric intensity???

will current pass through a capacitor attached to an DC source??peed of electrons through a conductor which is not given any potential diffrnce??

V directly proportional to I.. What is constant ??/ (R)

Which material is used as common condustor in daily use?? (Copper)Induced emf depends upon...???

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NUST N T QU STIONAc is converted in to Dc by??? (rectifier)...

Is dafa test main Scientist k name b puchay huay thay,...

Reactance of inductor is equal to??? ( 1/wL) which has wavelength greater than red light...??/ (

Infrared)...waht is unit of electric intensity?

If frequency of indutor increase then its inductance will?A diamond is? (noncondutor)If capacitor is connected with battery and its fully charged then current follow? (current not

flow?

What is indicators?Noble gases exist as? (free state)

Which group has max. I.E 1Aor2A?

What is fourh power of x in sixth power of (2-x)?

MOost mcqs of math in chp6 last exercise?What is the sum first 50 real no's?

What is unit of momentum?Electromagnetic radiation have grater wavelenght than red light?Product of two matrix is possible?

What is meaning of ''enigma''?

sin60 equal to?What is formula of Tan@?

What is formula of cos2@?

If Xrays fall on which following to produce photoelectrons?(plastic)First question of 2.10? as mcq

Highest I.E of noble gas?

Na is?

Which of following are uses of spectrometer?Entropy of Universal in natural process? (increses)

Colligative properties depend on?

Find energy of inductor lenth and current are given? (1/2LI2)In house which is connected in series? (fans,bulb,tubes,none)?

Boyl's law is applicable for those gases?

Prepared by (AIZA ASLAM).

Best of Luck ALL students...... please pray f0r me that i get g0od merit no .. PRAYERz

NEEDED :)

A is father of C and D is son of B. E is brother of A. If C is sister of D, how is B related to E?

oxidation state oif sulpher in h2so4 is..............

formula of malonic acid is............simplest form of fructose is ...........

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NUST N T QU STIONf2 is reactive because of............ disassosiation energy.

in contact chamber which happens........

bond angle b/w NF3 is.....102

formula of phosphoric acid is.........which of the followings doesnot react with alcohols........hbr,cl2,br2,pi3

at resonance rlc series circuit becomes ............resistive,when accentricity is e then a=...................which of the following produce intence lazer beam.......laser

two charges Q and q are halved and distance becomes doubled then force

becomes.......f/2,f/16,f/8the fringed widh in double slit experiment is directly proportional to..........wavelenth,distance,.....

r1=7,r2=5,r3=8,in which of the following the current will be maximum.......

which of the following is the hysenberg uncertainity principle.......

in comptons effect the wavelenth of the scatered photon is ......increase,decrease..when the ac is connected with covstant voltage then ..........current decreases with with time.....

h2 and o2 react and form the following cell....fuel cel,electrolytic cell,hydrogen cell,oxygen

cell...which of the following is the pollutant........if p1=10w and i1=2A what is P2 when i2=1A.........5,10,15,...

which of the following convert the heat energy into electrical energy.....thermocouple,.........

right hand rule is used to measure the ...magneticfield,electrical energy,.......find B when meu=4pi.10^7,and I=1A ...........

on heating Iron which of the followig changes............colour,density,lenth,.......

if emf f generator is is 10V and then angular vilocity becomes double then final emfbecomes....20V

if NS/NP IS turn ratio then for step up transformer ........NS>NP.............

which of the following doesnot occur as waves.....electric field, stationary wave, transverse

waves,electromagnetic...convertion of ac into dc is known as...........rectification......

MAGNIFICATION IS THE RATIO BETWEEN Fo and...........Fe,.........

find the sum of the series .(2n-1)...........confining of wave into one plane is called ............polarization........

if cp=10,cv=7,then then general gas constant becomes...........3

electron volt is the unit of ......energywhat happens when the ice melts.....entropy increase

a vector having 1 magnitude is called....unit vector

the time duration b/w two consecutive heartbeats of a normal human being??....8*10^-1 s

in astronomical telescope which of the following has greater focallength.........objective lensefor a body executing SHM acceleration is max at.....Mean positiion,extreem position,in b/w

mean and extreme,none

1degree is equal to how many radians.....0.01745

correct spelltng of' Mathematics' were askedcorrect spelling of nascent were asked

PHYSICS: (Based on concept and numericals) e.gQ= a car passes an observer and apply brakes, what is the direction of angular acceleration of

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NUST N T QU STIONWheels? (towards observer,away from observer....etc)

Q= a body is moving in a circular path with uniform velocity its

(energy is constant linear momentum is changing

both are changing...etc.)Q=Volume of a sphere hving radius 17cm?

1. Which series lie in ultra violet region?

2. If force is 2.5N velocity changes from 50 to 100m/s and time is 50s the mass of the body?3. Dimensions of power?

4. Which one is vector quantity? Electric field, charge on moving particle etc.

5. The energy stored in compressed spring is called?

6. Max range of projectile? Formula7. Work will be -ve if angle b/w force and displacement is?

8. Types of mechanical energy?

9. If spring constant is 2 and displacement is also 2 then sum of KE and PE?10. If we double the value of G then g?11. If the equator is moving downward then apparent weight?

12. If particle displaced in direction perpendicular to waves then waves are?

13. Which phenomenon is the most applicable example of wave nature of light?Reflection,refrection,etc.

14. The ratio of angles subtended on eye by the object is called?

15. The atoms of gas are in_____motion.16. If we half the distance b/w two charges then force will be?

17. RH rule is used for determination of? Electric field magnetic field etc.

18. If the angle b/w electric field and vector area A is pi/3 then electric flux?

19. If R1>R2>R3 then: Re>R1, Re

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NUST N T QU STION19)dowdy20)blemish21)amiable22)aggregate23)obesity24)

acrid25)knave

26)elicit27)illicit28)intricate29)badger30)kindal31)barbaric32)pauper33)engross34)improvise35)

horde36)fleece

37)tranquility38)gregarious39)venial40)blemish41)arrogate42)stingy43)calm44)dowdy45)apprise46)

beckon47)perturbed

48)subdue49)adulterate50)audacious51)venial52)spontaneous53)artful54)effusive55)appalled56)intrepid57)knave58)ascribable59)brunt60)prodigality61)throttle

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NUST N T QU STION(1) If the instantaneous current in a circuit is given by I=2sin(t+)amperes, the rms

value of the current is

(a) 2A (b) 2A (c) 2 2 A (d) zero

(2) Hot wire ammeter can be used for measuring(a) a.c only (b) d.c only (c) both a.c and d.c (d) neither a.c nor d.c

(3) Power delivered by an A.C. source of angular frequency to an LRC series circuitis maximum when

(a) L = R (b) L = C (c)1

LC

(d)R

LC

(4) The impedance of a circuit consist of 3 resistance and 4 reactance. The powerfactor of circuit is

(a) 0.4 (b) 0.6 (c) 0.8 (d) 1

(5) The same alternating current is flowing in two circuits A&B. A contains onlycapacitor, B contains only inductor. If the frequency of the supply is increased in

both the current

(a) increases in both (b) decreases in both(c) increases in A decreases in B (d) decreases in A increases in B

(6) Dimension of L/CR is same as that of(a) L (b) R (c) C (d) none of these

(7) In an a.c circuit average value of(a) current is zero (b) power dissipation is zero

(c) square of current is zero (d) none of these

(8) In frequency modulation ______ of carries waves changes with _____ of audio signal(a) amplitude, amplitude (b) amplitude, frequency(c) frequency, amplitude (d) frequency, frequency

(9) The peak value of A.C voltage is 5 2 its Vrms is(a) 20V (b) 10V (c) 5V (d) 15V

(10) The value of mutual inductance can be increased by(a) decreasing N (b) increasing N(c) Winding the coil on wooden frame (d) winding the coil on china clay

(11) Induced current in a circuit depends upon(a) induced emf (b) speed of conductor

(c) resistance of conductor (d) all of these

(12) Induced emf in a circuit can be produced by(a) moving a bar magnet towards a coil (b) changing area of the coil in a magnetic field

(c) by rotating a coil in a magnetic field (d) all of these

(13) Eddy currents can be decreased by(a) using a soft iron core

(b) increasing the number of turns in primary

(c) using laminated sheets for core(d) all of these

(14) The primary and secondary coils of a transformer are linked(a) electrically (b) magnetically (c) chemically (d) are not linked at all

(15) In case of an alternating current generator current alternates direction

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NUST N T QU STION(a) f times in a cycle (b) 2f times in a cycle (c) f times per second(d) all of these

(16) In an inductor the energy is stored in(a) electric field (b) magnetic field

(c) both electric and magnetic field (d) no energy is stored in an inductor

(17) Self inductance of solenoid is increased by(a) increasing current in the coil (b) increasing area of cross-section of the coil(c) passing A.C instead of D.C (d) all of the above

(18) Mutual inductance of a coil depends upon(a) number of turns of two coils (b) area of cross-section of two coils

(c) material of core (d) all of the these

(19) An emf is induced in a wire subjected to a changing magnetic field. The magneticinduction B of this field varies with time as shown in graph at which point is the

induced emf maximum

(a) A (b) B (c) c (d) both b and c

(20) The output power of an ideal transformer is(a) greater than input power (b) less than input power

(c)equal to input power (d) equal to input power if turn ratio is 2:4

(21) A charge particle is moving in a uniform magnetic field. If the value of B is doubled,its time period becomes

(a) doubles (b) remains same (c) is halved (d) quadrupled(22) A current is flowing in a wire C as shown in the figure. The force on this conducting

wire will be

(a) towards right (b) towards left (c) downwards (d) upwards

(23) Which device can control A.C without consuming energy(a) resistor (b) rheostat (c) choke (d) potentio-meter

(24) Capacitor offers opposition to the flow of(a) D.C (b) A.C (c) both a and b (d) none of these

(25) In case of a capacitor connected across an A.C supply(a) voltage and current are in phase (b) voltage lags current by

2

(c) voltage lead current by /2 (d) none of these

(26) Back emf in motor

A B C D

O

t

B

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NUST N T QU STION(a) increase with increase in speed (b) decrease with increase in speed

(c) remains constant (d) no back emf is produced in motor

(27) The armature current in a DC motor is maximum when motor has(a) just started (b) just been switched off

(c) picked up maximum speed (d) intermediate speed

(28) Lenz`s law is a consequence of the law of conservation of(a) Charge (b) energy (c) momentum (d) mass

(29) The current in a coil changes from 0 to 2A in 0.05sec. if the induced emf is 80V theself inductance of the coil is

(a) 1H (b) 0.5H (c) 1.5H (d) 2H

(30) An iron bar is placed near a magnet as shown, which diagram correctly shows theinduced magnetism of the iron bar?

(a) (b) (c) (d)

(31) The maximum value of induced emf in a coil rotating in magnetic field does notdepend on

(a) the resistance of coil (b) the number of turns in the coil

(c) the area of the coil (d) rotational frequency of the coil

(32) Electricity is transmitted at high voltage rather than at low voltage because(a) it is greater at high voltage (b) it is safer(c) it requires less insulation (d) it wastes less energy

(33) When magnet was pushed towards a solenoid, the meter connected to the solenoidshowed a deflection to the right, when the same magnet was pulled away from the

solenoid at the same speed, what was the deflection on the meter?

(a) greater and to the right (b) the same and to the right(c) the same but to the left (d) zero

(34) An electric motor could be used as a(a) battery (b) capacitor (c) dynamo (d) transformer

(35) When a magnet is moved into the coil of wire shown, there is a small reading on thesensitive meter, which change would increase the size of the reading?(a) moving the magnet faster (b) pulling the magnet out

(c) pushing in the S-pole (d) unwinding some of the turns of wire

(36) At what time the instantaneous voltage is half of the maximum voltage (T is timeperiod)

(a)T

2 (b)

T

12 (c)

T

6 (d)

T

4

(37) In R-C series circuit

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NUST N T QU STION(a) voltage and current are in phase (b) voltage leads current by

2

(c) current leads voltage by2

(d) none of these

(38) If the frequency of A.C supply across an inductor is doubled then its reactance(a) remains same (b) is doubled (c) halved (d) quadrupled

(39) At what frequency will an inductor of 1.0H have a reactance of 500(a) 50 Hz (b) 60 Hz (c) 70 Hz (d) 80 Hz

(40) In acceptor circuit at resonance the impedance of the circuit is(a) zero (b) minimum (c) maximum (d) infinite

(41) If the capacitance of a tuning circuit is doubled and inductance is halved then itsfrequency

(a) doubles (b) is halved (c) is quadrupled (d) remains same

(42) Which of the following statements is wrong regarding electromagnetic waves(a) travel in free space at the speed of light (b) travel with same speed in all media

(c) are transverse (d) are produced by accelerating charge

(43) In which of the following sequences are the electromagnetic waves in decreasingorder of frequency.

(a) ultraviolet, infrared, x-rays, radio (b) -rays, x-rays, infrared, radio

(c) radio, infrared, visible, ultraviolet (d) none of these

(44) Ozone layer absorbs(a) infrared radiation (b) microwaves (c) radio waves (d) ultraviolet

(45) Speed of electromagnetic waves is given by(a) oo (b) o o (c)

o o

1

(d)

o o

1

(46) Why does a transformer have a core made of iron.(a) iron has a high melting point (b) iron is a conductor of electricity(c) iron is a conductor of heat (d) iron is a magnetic material

(47) A metallic circular ring is suspended by a string and is kept in a vertical plane.When a magnet is approached towards the ring then it will

(a) remain stationary (b) get displaced away from the magnet

(c) get displaced towards the magnet (d) nothing can be said(48) In a step up transformer there are 100 turns in the primary and 200 turns in the

secondary. A dry cell of emf=1.5volt is connected across the primary. The voltage

across the secondary is

(a) 3 volt (b) 1.5 volt (c) zero (d) 0.75 volt

(49) Which of the following makes use of the principle of electromagnetic induction(a) voltmeter (b) galvanometer (c) ohm meter (d) D.C generator

(50) Time period of a charged particle moving in a magnetic field

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NUST N T QU STION(a) increases with increase in speed (b) decreases with increase in speed

(c) increases with decreases in speed (d) independent of speed

CHAPTER 17+18+19(1) Which of the following graphs represent the variation of particle momentum and

the associated de-Broglie wavelength?

(a) (b) (c) (d)

(2) In an operational amplifier as a night switch the potential across the LDR duringnight

(a) increases (b) decreases (c) remains constant (d) becomes zero(3) Stopping potential for photoelectrons.

(a) does not depend on the nature of cathode material

(b) does not depend on the frequency of the incident light(c) depends on both the frequency of the incident light and the nature of the cathode material(d) depends on the intensity of the incident light

(4) All magnetic materials lose their magnetic properties when(a) dipped in water (b) dipped in oil(c) strongly heated (d) brought near a piece of iron

(5) Bonding in a germanium crystal is(a) metallic (b) ionic (c) covalent (d) none of these

(6) The p-side of a junction diode is earthed and the n-side is given a potential of 2V.The diode will(a) break down (b) conduct (c) not conduct (d) conduct partially

(7) The truth tableA B Y0 0 11 0 0

0 1 0

1 1 0

corresponds to(a) NAND gate (b) NOR gate (c) AND gate (d) NOT gate

(8) A photon of energy 1.5MeV collides with a heavy nucleus which of the following isthe dominant phenomenon(a) Comptons effect (b) pair production(c) photoelectric effect (d) all are equally probable

(9) The area of hysteresis loop is an indication of(a) coercivity of the material (b) retentivity of the material(c) energy dissipated per cycle (d) none of these

(10) Soft iron is preferred for the core of a transformer because it has(a) large coercivity (b) large retentivity (c) large loop area (d) small loop area

(11) Super conductors offers(a) little resistance to electric current (b) large resistance to electric current(c) no resistance to electric current (d) moderate resistance to electric current

(12) In a pnp transistor, the p-type crystal acts as

P

P

P

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NUST N T QU STION(a) emitter only (b) collector only

(c) either emitter or collector (d) neither emitter nor collector.

(13) The current gain in a common emitter transistor is(a) more than 1 (b) less than 1 (c) equal to 1 (d) zero

(14) In an intrinsic semi conductor the number of(a) electrons are greater (b) holes are greater(c) electrons and holes are equal (d) none of these

(15) In the depletion region of an unbiased pn junction diode, there are(a) only electrons (b) only holes

(c) both electrons and holes (d) only fixed ions

(16) When n-type semiconductor is heated, the(a) number of electrons increases while that of holes decreases

(b) number of holes increases white that of electrons decreases

(c) number of electrons and holes remains the same(d) number of electrons and holes increases equally.

(17) In the case of forward biasing of pn junction, which one of the following figurescorrectly depicts the direction of the flow of charge carriers?

(a) (b)

(c) (d)

(18) A semiconducting device is connected in a series circuit with a battery and aresistance. A current is found to pass through the circuit. If the polarity of the

battery is reversed, the current drops to almost zero. The device may be(a) a pn junction (b) an intrinsic semiconductor

(c) a p-type semiconductor (d) an n-type semiconductor

(19) Two identical p-n junction may be connected in series with a battery in three ways.The potential drops across the two p-n junctions are equal in

circuit 1 circuit 2 circuit 3

(a) circuit 1 and circuit 2 (b) circuit 2 and circuit 3(c) circuit 3 and circuit 1 (d) circuit 1 only.

(20) Which of the following groups represents polymeric solids(a) glass, polystyrene, nylon (b) polystrene, rubber, sodium chloride(c) glass, gold, polythene (d) polythene, rubber, nylon

(21) The de-Broglie wavelength of a neutron when its kinetic energy is K is . What willbe its wavelength when its kinetic energy is 4K?

(a)4

(b)

2

(c) 2 (d) 4

P N

RL

C

2

P N

P N

RL

C

RL

C

RL

C

RL

C

RL

C

RL

C

2 2 2 2 22

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NUST N T QU STION(22) Moving with the same velocity, which of the following has the longest de-Broglie wavelength?

(a) -particle (b) -particle (c) proton (d) neutron

(23) The temperature at which a ferromagnetic material becomes paramagnetic is called(a) critical temperature (b) inversion temperature(c) neutral temperature (d) curie temperature

(24) The maximum kinetic energy of photoelectrons emitted from a surface whenphotons of energy 6eV fall on it is 4eV. The stopping potential is(a) 2V (b) 4V (c) 6V (d) 10V

(25) No of inputs in NOT gate are(a) one (b) two (c) three (d) four

(26) Crystalline solids have(a) long range order and no definite melting point

(b) long range order and sharp melting point

(c) short range order and sharp melting point

(d) none of these

(27) Boolean expression for NOR gate is(a) A . B = Y (b) A+B = Y (c) A B Y (d) A.B Y

(28) A hole in a p-type semi conductor is(a) an excess electron (b) a missing electron(c) a missing atom (d) an excess atom

(29) The work functions for three different metal A,B and C are a, b and crespectively with a > b > c. The graphs between stopping potential (Vo) andfrequency of incident radiation for them would look like

(a) (b) (c) (d)

(30) The electron, accelerated by a potential difference V has de-Broglie wavelength . Ifthe electron is accelerated by a p.d.4v, its de-Broglie wavelength will be

(a) 2 (b) 4 (c)2

(d)

4

(31) The majority current carriers are(a) electrons in p-type semiconductors and holes in n-types semi-conductors(b) electrons in n-type semiconductors and holes in p-type semiconductors (c)

electrons in both p and n type semiconductors

(d) holes in both p and n type semiconductors.

(32) At absolute zero of temperature, the electrical conductivity of a pure semiconductor is(a) zero (b) about 10

3(m)

1 (c) about 10

7(m)

1 (d) infinity

(33) Choose the only incorrect statement from the following(a) in conductors, the valence and conduction bonds may overlap

(b) substances with an energy gap of the order of 10eV are insulators(c) the resistivity of a semiconductor increases with increase in temperature

(d) the conductivity of a semiconductor increases with increase in temperature.

(34) If a rubber ball is taken down to a 100m deep lake its volume decreases by 0.1% if

O t B2

2

OtB2

OtB2

Ot B

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NUST N T QU STIONg = 10m.sec

2then bulk modulus of elasticity for rubber in N/m

2is

(a) 105 (b) 10

6 (c) 10

8 (d) 10

9

(35) The addition of a minute quantity of antimony to a silicon crystal makes it(a) a good insulator (b) a good conductor(c) a p-type semiconductor (d) an n-type semiconductor

(36) The p-n junction diodes are used as(a) amplifiers to build up a given ac signal(b) rectifiers to change ac to dc in power supplies

(c) oscillators to produce ac signals of desired amplitude and frequency

(d) none of these

(37) The output from a full wave rectifier is(a) an ac voltage (b) a dc voltage

(c) zero (d) a pulsating unidirectional voltage

(38) A half wave rectifier is being used to rectify an alternating voltage of frequency 50Hz. The number of pulses of rectified current obtained in one second is

(a) 50 (b) 25 (c) 100 (d) 200

(39)

A piece of copper and another of germanium are cooled from room temperature to80 K. The resistance of

(a) each of them increases (b) each of them decreases

(c) copper increases and that of germanium decreases

(d) copper decreases and that of germanium increases.

(40) In a typical transistor, the collector current is(a)slightly less than the emitter current (b) slightly more than the emitter current

(c) equal to the emitter current (d) equal to the base current.(41) Which one of the following graphs in the figure shows the variation of photoelectric

current (I) with intensity of light in photo electric cell

(a) (b)

(c) (d)

(42) For a photoelectric cell, the graph in the figure showing the variation of the cut offvoltage Vo with frequency (v) of incident light is

2

2

2

2

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NUST N T QU STION(a) (b) (c) (d)

(43) At which relativistic speed the mass of an object will be come double than its rest mass(a)

c

2 (b)

3 c

2 (c)

2c

3 (d)

2c

3

(44) The work function for aluminium surface is 4.2eV and that the sodium surface is 2.0 eV. Thetwo metals were illuminated with appropriate radiation so as to cause photo emission then(a) both aluminium and sodium will have the same threshold frequency

(b) the threshold frequency of aluminium will be more than that of sodium(c) the threshold frequency of aluminium will be less than that of sodium

(d) the threshold wavelength of aluminium will be more than that of sodium

(45) A crystal lattice is(a) a random arrangement of atoms in a crystal

(b) a random arrangement of molecules in a crystal

(c) an ordered arrangement of points in space

(d) a piece of crystal

(46) The photoelectrons emitted from a metal surface(a) are all at rest(b) have the same kinetic energy

(c) have the same momentum(d) have speeds varying from zero upto a certain maximum value

(47) Violet light can cause photoelectric emission from a metal but blue light cannot. Ifsodium light is incident on the metal, then

(a) the photoelectric current decreases

(b) the number of photoelectrons ejected per second increases

(c) the velocity of photoelectrons increases

(d) no photoelectric emission occurs

(48) In common emitter amplifier the phase difference between input signal voltage andout put voltage is

(a) 0 (b)4

(c)

2

(d)

(49) A proton and an electron move with the same velocity, the associated wavelength for proton is(a) shorter than that of the electrons (b) longer than that of the electrons(c) the same as that of the electrons (d) zero

(50) The number of crystal systems based upon the geometrical arrangement of atoms are(a) three (b) five (c) seven (d) nine

CHAPTER 20+21

(1) In the nuclear reaction 6C115B11+ +10+ X X stands for(a) energy released (b) neutrino (c) 1H

1 (d) -ray

(2) One sixteenth of the initial amount of radioactive isotopes remains unchanged aftertwo hours. The half life of isotope is

(a) 15 min (b) 45 min (c) 30 min (d) 60 min

(3) The most stable nuclei is

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NUST N T QU STION(a) Helium (b) iron (c) uranium (d) krypton

(4) Rest mass energy of an electron(a) 511 KeV (b) 0.5 KeV (c) 931 MeV (d) 510 meV

(5) The working a nuclear radiation detector depends upon(a) voltage applied (b) ionization of charged particle(c) gas used in a detector (d) all of these

(6) Interaction of nuclear radiation with matter depends upon(a) mass of the particle (b) energy of the particle

(c) charge of the particle (d) all of these

(7) Range of ,and particle in matter is(a) > > (b) >> (c) > > (d) > >

(8) Solid state detector is operated on(a) forward biased (b) reverse biased

(c) may be forward may be reversed (d) no biasing at all(9) The magnitude of pulse in a solid state detector depends upon

(a) energy of charged particle (b) charge of charged particle

(c) mass of charged particle (d) none of these

(10) The best place to store nuclear waste is(a) oceans (b) canals (c) old salt mines (d) Coal mine

(11) Which of the series is more energetic(a) K series (b) L series (c) M series (d) N series

(12) An atom X is excited to an energy E2from the ground state Eoby collision with anatom which of the following statements is correct the electron in X lose energy just

after collision (II) the excited atom X emits a photon given by hf=Eo-E2 (III) the

colliding atom must have lost energy to excite X

(a) all are correct (b) II and III (c) I and III (d) III only

(13) The spacing of an atomic layers in a crystal can be measured using x-rayswavelength in meter of the order of

(a) 10-6

(b) 10-7

(c) 10-9

(d) 10-10

(14) X-rays are produced by energy changes in(a) the nucleus (b) electron close to the nucleolus(c) electrons far from nucleus (d) electrons and protons

(15) The half life of radon gas is 60 sec. This can be changed by(a) mixing with another radioactive gas (b) heating radon

(c) increasing pressure (d) none of these

(16) Which is of the following is good nuclear fuel(a) neptunium 239 (b) uranium 236 (c) plutonium 239 (d) thorium 236

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NUST N T QU STION(17) Starting with a sample of pure 66 7Cu,

8 of it decays into Zn in 15 minutes the

corresponding half life is

(a) 10 min (b) 15 min (c) 5 min (d)1

7

2

min

(18) An -particle incident on a nuclide X produces nuclide Y and two -particles

88 4 x

37 2 yX + He Y + 2 which is correct?

(a) x=90, y=39 (b) x=92, y=39 (c) x=92, y=41 (d) x=90, y=38

(19) Freshly prepared radioactive sample of half life 1 hour emits radiations that are 128times as intense as the permissible safe limit. The minimum time after which the

sample can be safely used is

(a) 14 h (b) 7 h (c) 128 h (d) 256 h

(20) The source of energy in sun and star is(a) fission (b) Fusion (c) chemical reaction (d) combustion

(21) Nuclear forces arises from continuous exchange of particles known as(a) mesons (b) baryons (c) positrons (d) leptons

(22) Two protons attract each other when the distance between them is nearly(a) 10

-1m (b) 10

-10m (c) 10

-15m (d) statement is wrong

(23) The emission of -rays is followed by the emission of a(a) -ray (b) neutrino (c) antineutrino (d) neutron

(24) What are the values of a and z in the following nuclear reaction4 14 a 1

2 z 8 1He N O H

(a) 17, 7 (b) 7, 17 (c) 13, 6 (d) 6, 13

(25) In which sequence the radioactive radiations are emitted in the following nuclear reaction.A A A 4 A 4

z 1 z 1 z 1zX Y Z Y

(a) ,, (b) ,, (c) ,, (d) , ,

(26) What is the missing nuclei in the following reaction6 9 1

3 4 1Li ? Be H

(a) 2He4 (b) 1H1 (c) on1 (d) 1H3

(27) Number of electrons in the nucleus of 92U235are(a) 235 (b) 92 (c) 91 (d) none of these

(28) Electrons are(a) Hardons (b) Leptons (c) Baryons (d) Photons

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NUST N T QU STION(29) When an animal dies each gram of carbon in its body emits about 16particles each

minute. Each gram of carbon from some animal remains is found to emit 4particlesper minute. How old is the animal (Half life of radioactive carbon is 6000 years)

(a) 3000 years (b) 6000 years (c) 12000 years (d) 18000 years

(30) Which of the following nuclides has equal number of neutrons and protons(a) 1H

1 (b) 4Be

9 (c) 2He

4 (d) 3Li

7

(31) In protonproton cycle number of neutrinos emitted are(a) one (b) two (c) three (d) no neutron is emitted

(32) The damage of ozone layer is mainly due to release of(a) carbon mono oxide (b) chloroflouro carbons

(c) methane (d) ethane

(33) Which radiation should be used for treatment of infection in the interior(a) -rays (b) -rays (c) -rays (d) all of these

(34) An electron in a hydrogen like atom is in excited state. It has a total energy of3.4eV. Its kinetic energy is

(a) 3.4eV (b) 6.8 eV (c)3.4eV (d)6.8 eV

(35) In helium neon laser active medium(a) helium (b) neon (c) argon (d) none of these

(36) Positive rays are(a) electromagnetic waves (b) ions (c) electron (d) neutrons

(37) Number of series of Bohrs atom lies in ultraviolet region are(a) one (b) two (c) three (d) four

(38) X-ray region lies between(a) -rays and visible region (b) -rays and ultraviolet

(c) radio waves and visible region (d) both b and c

(39) Life time of metastable excited states is(a) 10

-8sec (b) 10

-3sec (c) 10

-5sec (d) 10

-2sec

(40) In Bohar model of hydrogen atom. In going from lower to higher orbit(a) P.E decrease, T.E decreases (b) P.E decrease, T.E increase

(c) P.E increases T.E increases (d) P.E increases T.E remains constant(41) The diagram shows a narrow beam of charged particles entering a uniform

magnetic field. What type of radiations does the beam contain

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NUST N T QU STION(a) -particles and particles (b)-particles and -particles

(c) -particles only (d) -particles only

(42) The uranium atom 92U238emits an particle to become thorium, which then emits a-particles to become protactinium. What is the proton number of protactinium(a) 89 (b) 91 (c) 95 (d) 85

(43) Nuclide 90X225decays to nuclide Y with the emission of two particles and one -particle.What is the composition of Y?

(a) 89Y221

(b) 85Y217

(c) 87Y217

(d) 86Y216

(44) Particle is bombarded on 147N as a result

17

8O is formed. The particle emitted is

(a) neutron (b) proton (c) electron (d) positron

(45) Which of the following is a fusion reaction(a)

1 14 14 1

o 7 6 1n N C H (b)

3 o21 1

H He B

(c)2 2 4

1 1 2H H He (d) none of these

(46) Curie is a unit of(a) energy of -rays (b) half life (c) radioactivity (d) intensity of -rays

(47) S.I unit of absorbed does of radiation are(a) Curic (b) Gray (c) Rad (d) None of these

(48) To cure thyroid cancer we use(a) Na24 (b) Iodine131 (c) N14 (d) Co-60

(49) In a nuclear reactor cadmium rods are used to(a) slow down neutrons (b) absorb neutrons

(c) speed up neutrons (d) produce neutrons

(50) A free proton is(a) stable (b) unstable

(c) some times stable and some time unstable (d) All of these

1.if a person moves 4m northward,then turn right and move 3m then again turn right and move

6m,then take a U turn and move 2m.

a.3m

b.4m

c.5m

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NUST N T QU STIONd.6m

2.integrate 1/6 (3t + 2)^1/2

3.the angle of the triangle present inside a semicircle is?

4.if we give some charge to soap bubble then it will decrease or increase?

5.si unit of mass is??

6.time period of sin3x is?

7. pie/2 is time period of sinx.sin2x,sin3x or sin4x??

8.sinxcosx=1/4, find x??

9.sinx=30 then find tan2x.

10.benzene have some directing groups, which are those groups?

11.realation b/w ionization energies of gropu 1A and 2A

12.trends of melting and boiling point?

13.hydration means?

14.KOH is more basic then NAOH?

15.boron form ionic compounds, non ionic compounds, no compounds or perfect cation??

16.CO2 is polar, non polar, linear diatomic molecule?

17.CO2, CO, etc in which of the following compound carbonhas zero oxidation state?

18.phosphorus has how many allotropic forms?

19.bleaching powder formula??

20.why noble gases do not give reactions?

21. CH2-O-CH3 and CH2-CH2-OH, type of isomerism

22.alcohol don not react with SOCL3,PI3,HBR etc :P

23.a body of mass 200 kg moving with velocity 20 m/s in a radius 10 m then the required forceto move the body in circle is??

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NUST N T QU STION24.A,B,C,D,E are student ssitting in a row facing west, A and B are sitting in the front row in

such a way that A is on the south, D is sitting behind A, C is sitting 2m on the left of D, now if E

is present east-south to A then tell that E is north-east to which student?: :P

25.sec^2 x + cosec^2 x = ??alright don't eat me if any answer is wrong but please tell me the wrong ones..

Answers1- 3m

2- (1/27) (3t+2)^(3/2)

3- its always a right angled triangle => 90

4- (didn't get the question... what will increase or decrease charge or size of bubble?!?! )

5- kg

6- [2(pi)]/3

7- sin(4x)

8- 15

9- (question is wrong, range of sine is less than 1 i guess) most probably question is sin 30 = x

than find tan 2x

in this case answer is v3 (depending in which quadrant)

10- ortho, meta. para?

11- group 1A elements have more ionization enery than 2A. cuz its very difficult to remove an

electron from its outermost shell since it has only 1 and is being pulled by the positive charge of

the proton etc..

12- decreases from top to bottom and increases from left to right in the periodic table.

13- process of adding water to something... like hydrating something...

14- Na is less electronegative than K, so NaOH will more willingly release -OH group thats whyNaOH is a stronger base... (i am 50% for KOH & 50% for NaOH, not sure about this answer,this is my best guess)

15- non-ionic compounds

16- linear diatomic molecule

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NUST N T QU STION17- oxidation state of O = -2.....

what other options??

18- 6 forms

19- CaCl(OCl) AKA calcium hypochlorite

20- cuz they are stable. (i wonder what the options for this will be )

21- (i'm not sure about this one) but i guess question has a slight mistake, its CH3-O-CH3 &CH3-CH2-OH. my best guess is its functional group isomerism...

22- is this even a question

23- 8000N

24- too confusing, if someone knows it please explain to me i would leave this one although itseasy but its kinda time consuming

25- sec . cosec

_____________________________________________________________________________