BLS International School, Hathras

Session 2018-2019

Summer Holiday Homework

Class – XI Dear Children,

Summer vacations are synonymous with fun, frolic, getting up late in the morning, playing for longer

hours with friends, going for picnics, watching fun filled shows on T.V.

It is a crucial time for you children, to plan and decide about your future as well. And for this you need

to do a research work on the career options available for you according to your interest and caliber.

Your Holiday Home Task is designed in the manner to help you to do research work in similar capacity

and contribute in the Career Fair that will be organized on Founders Day.

The Home task includes

(i) Research work in subjects of your interest and prepare projects/presentations for stalls. It can be in

group or an individual activity.

(ii) Given assignments per subject to be done in fair notebook.

(iii) Completion of Practical Files as per the Experiments/activities prescribed in the syllabus that carries

5 marks in each Practical subjects

(iv) An Investigatory project file to be prepared on topics given by teachers which carries 5 marks in

Practical subjects. (Only for Class XI & XII students)

(v) An article (write ups/poem/story/riddle/joke/views, etc) on any topic of any subject for Annual

School Magazine-2018.Language no bar.

Holiday Homework will be assessed internally also by subject teachers and carries 5 marks.

Assigned task should be done by the students on their own using help from the parents and peer group.

Your projects will be displayed in exhibition on Founders Day (8th July’ 2018) in school for parents and

visitors to view and appreciate..

Holiday H.W. soft copy is uploaded on website, students can download & take its printout (Hard copy).

It is compulsory to submit Holiday H.W. when school reopens after summer vacations.

Involve yourself in developing social and communication skills by meeting and greeting others.

Watch inspirational documentaries, movies and develop reading habits by reading any book of your

choice or a newspaper to keep yourself updated.

Be a guiding force for juniors and a supporting hand for elders. Build trust and confidence to improve

your personality.

Keep yourself updated about the new competitive opportunities/challenges that you are likely to face in

near future.

Principal

BLS INTERNATIONAL SCHOOL, HATHRAS

Session 2018-19 Summer HOLIDAY HOMEWORK

CLASS XI

SU

B

ENRICHMENT ACTIVITY / PROJECT ( Chose as per the subjects opted in Class XI )

En

glish

Prepare any 2 of the following projects:- 1. Prepare a A3 sheet and decorate it beautifully, paste a picture of any National / International literary person and write about their achievements in literary field.

2. In a scrapbook write a script ( dialogue form) on Julius Caesar written by William Shakespeare and paste the pictures related to it.

3. Make a PowerPoint presentation on the life and works od any National / International poet. 4. On a handmade chart paper depict the early life, struggles, success story, contribution in literary field, awards etc of any literary person through a flow chart- decorate it beautifully.

5. Collage work :- make an eye-catching collage on the literary works of the famous literary national / international person with added pictures

Ph

ysi

cs

1. Prepare investigatory project on the topic assigned to you.

2. Complete the following experiments in Practical file.

A. Experiments:- 1. To measure diameter of a small spherical/cylindrical body by using vernier calipers.

2. To measure internal diameter and depth of a given breaker using vernier calipers and hence find it

volume. 3. To determine volume of an irregular lamina using screw gauge.

4. To determine radius of curvature of a given spherical surface by a spherometer. 5. To determine the mass of two different objects using a beam balance.

6. To find the weight of a given body using parallelogram law of vectors.

7. Using a simple pendulum, plot its L-T2

graph and use it to find the effective length of second’s pendulum.

8. To study the re lationship between force of limiting friction and normal reaction and to find the

coefficient of friction between a block and a horizontal surface. 9. To find the downward force, along an inclined plane, acting on a roller due to gravitational pull of

the earth and study its relationship with the angle of inclination q by plotting graph between force and

sin Ɵ.

B. EXPERIMENTS:-

1- To determine young’s modulus of elasticity of the material of a given wire. 2- To find the force constant of a helical spring by plotting a graph between load and extension.

3- To find the value of v for different values of u in case of a concave mirror and to find the focal

length. 4- Find the focal length of a convex lens by plotting graphs between u & v or between 1/u and 1/v.

5- To determine angle of minimum deviation for a given prism by plotting a graph between angle of

incidence and angle of deviation. 6- To determine refractive index of a glass slab using a travelling microscope.

ACTIVITY:- A 1- To make a paper scale of given least count, e.g., 0.2cm, 0.5cm.

2- To study the variation in range of a projectile with angle of projection.

ACTIVITY:-B 1. To study the effect of detergent on surface tension of water by observing capillary rise.

2. To study the factors affecting the rate of loss of heat of a liquid.

Math

Prepare project / Research work on the topic assigned to you.

Ch

em. 1.Projects are given in Chemistry Lab manual (Evergreen). Students can choose any other

investigatory projects with the approval of the teacher.

2. Complete the experiments in the practical file.

Bio

logy

Prepare investigatory project on the following topics 1. 1. Herbarium 2. ABO Blood grouping test 3/ Genetic and Non-genetic diseases / Pathogenic

diseases 4. Animal Physiology 5. Cancer awareness. 2. Complete the experiments in your practical file.

3. Prepare slide / chart/ modal on given investigatory project.

Com

.

Make a PowerPoint Presentation on ‘Career option in Computer science and present it neatly in a project file (printout of slides).

Info

rma

tics

Practi

ces

Design an interface of GUI NetBeans Java with all its windows by entitling its captions.

This activity is to be done in four groups. OR

Project Work: PowerPoint Presentation on one of any Programmer’s/Software Developer’s life. Number of Slides: minimum10 and maximum18 Additional for projecting how the same strategies can be implemented to become a Programmer or a Software Developer by choosing this stream

(Computer Science or Informatics Practices). Present your work neatly in a Project file (print out of slides)

1.

Acco

un

ts

Project file of “Comprehensive question with solution” OR Make a PowerPoint presentation on “Career option in commerce” and present it neatly in a project file ( printout of slides)

B.

St.

Project file / Chart or a PowerPoint presentation on “Stock Exchange and SEBI” and present them neatly in a project file.

Eco. Compare the Economics of any two Asian countries

Report on NSSO OR Working of RBI OR Prepare a project on ‘Future Scope in Economics’ either PPT or file.

Po

l.

Sci. Prepare a report on ‘Parliament’.

OR Prepare a PPT / Project for career Fair on - Career options in Humanities. Present your work neatly in a project file (printout of slides).

His

t. Prepare a PPT on Career options in History.

Make a project on ‘making and Unmaking of Mesopotamia’ and present it neatly in a project file. (printout of slides)

So

ci

.

Prepare a project file or PPT related to Career options available for scholars of sociology. Present it neatly in a project file(printouts of slides)

Ph

y.

Ed

u. Prepare a well labeled diagram of your favorite sport’s ground/court. OR

Make PPT on career options in physical education and sports and present it neatly in a project file (printout of slides).

BLS INTERNATIONAL SCHOOL, HATHRAS Session 2018-19

Summer HOLIDAY HOMEWORK

CLASS XI

Note: - All the assignments to be done in fair notebook as per the subjects opted.

English

Q1. NOTE – MAKING

Read the passage carefully and answer the questions given below. (A) Passage - 1

Occasional self-medication has always been part of normal living. The making and selling of drugs has a long history and is closely linked, like medical practice itself, with belief in magic. Only during the last

hundred years or so, as the development of scientific techniques made it possible diagnosis has become possible. The doctor is now able to follow up the correct diagnosis of many illnesses-with specific treatment of their causes. In many other illnesses of which the causes remain unknown, he is still limited,

like the unqualified prescriber, to the treatment of symptoms. The doctor is trained to decide when to treat symptoms only and when to attack the cause. This is the essential difference between medical

prescribing and self-medication. The advance of technology has brought about much progress in some fields of medicine, including the development of scientific drug therapy. In many countries public health organization is improving and

people’s nutritional standards have risen. Parallel with such beneficial trends are two which have an adverse effect. One is the use of high pressure advertising by the pharmaceutical industry which has tended to

influence both patients and doctors and has led to the overuse of drugs generally. The other is emergence of eating, insufficient sleep, excessive smoking and drinking. People with disorders arising from faulty habits such as these , as well as well from unhappy human relationships , often resort to self –medication and so

add the taking of pharmaceuticals to the list .Advertisers go to great lengths to catch this market. Clever advertising, aimed at chronic suffers who will try anything because doctors have not been able to

cure them, can induce such faith in a preparation, particularly if steeply priced, that it will produce-by suggestion-a very real effect in some people .Advertisements are also aimed at people suffering from mild complaints such as simple cold and coughs which clear up by themselves within a short time.

These are the main reasons, why laxatives, indigestion-remedies, painkillers, cough-mixtures, tonics, vitamin and iron tablets, nose drops, ointments and many other preparations are found in quantity in many

households. It is doubtful whether taking these things ever improves a person’s health, it may even make it worse. Worse, because the preparation may contain unsuitable ingredients; worse because the taker may become dependent on them; worse because they might be taken excess; worse because they

may cause poisoning , and worst of all because symptoms of some serious underlying cause may be asked and therefore medical help may not be sought. Self-diagnosis is a greater danger than self-medication.

Questions

(1) On the basis of your reading of the above passage, make notes on it, in points only, using headings and sub-headings. Also use recognizable abbreviations, wherever necessary (Minimum four). Supply an

appropriate title to it. (2) Write a summary of the above passage in about 80 words.

(B) Passage - 2

Read the passage carefully and answer the questions given below.

Almost all of us have suffered from a headache at some time or the other. For some a headache is a constant companion and life is a painful hell of wasted time.

The most important step to cope with headaches is to identify the type of headache one is suffering from. In tension headaches (two hand headache), a feeling of a tight band around the head exits along with the pain

in the neck and shoulders. It usually follows activities such as long stretches driving, typing or sitting on

the desks. They are usually short lived but can also last for days or weeks. A headache is usually caused due to the spinal misalignment of the head, due to the posture. Sleeping on

the stomach with the head turn to one side and bending over positions for a long time make it worse. In migraine headaches, the pains usually on one side of the head may be accompanied by nausea, vomiting irritability and bright spots of flashes of light. This headache is meant worse by activities especially

bending. The throbbing pain in the head worsens by noise and light. Certain triggers for migraines may be chocolate, caffeine, smoking or MSU in certain food items. The pain may last eight to twenty four

hours and there may be a hangover for two or three days. Migraines are often produced by an ‘aura’------changes in sight and sensation. There is usually a family migraine. In a headache, pain originates from the brain but from the irritated nerves of muscles, blood vessels and

bones. These head pain signals to the brain which judges the degree of distress and relays it at appropriate sites. The pain sometimes may be referred to sights other than the problem areas. This is known as referred

by pain and occurs due to sensation overload. Thus, though, most headache states at the base of the skull referred pain as felt typically behind the eyes. Factors causing headache are understood but it is known that a shift in the level

of body hormones chemicals, certain foods and drinks and environmental stress can trigger them. If the headache troubles you often, visit the doctor, who will take a full health history relating to diet, life

stresses, the type of headache, trigging factors and relief measures. You may be asked to keep a ‘headache diary’ which tells you to list – the time headache started and when it ended, emotional environmental and food and drinking factors which may contribute to it. The type and severity of pain and

the medications used which provide much relief are also to be listed. This helps the doctor in determining the exact cause and type of headache and the remedy thereof.

Questions (a) On the basis of your reading the passage make notes on it us ing recognizable abbreviations wherever necessary. Use a format u consider suitable. Supply a suitable title.

(b) Write a summary in about 80 words. Q2. You are Personnel manager of Green Bio-products Lyd., Sector 18, Industrial Area, Faridabad. You

need an efficient PA / Stenographer for your office. Write an advertisement for the ‘Situation Vacant’ column of a local daily. Q3. M/s Bright Vision have produced a new television named ‘Home Theatre’ draft an advertisement for a

local daily to promote the sale of the television. Offer a Kodak Camera free along with the television to those who buy it before March 30.

Q 4. You are Pritish/Priya, a student of TownVale School, Mumbai. You have lost a bundle of previous year’s sample papers along with three multimedia CDs. Giving all the details of the lost objects, draft a notice to be published in the school’s notice board.

Q 5. Your school is going to visit Lord Padmanabha Temple in Thiruvananthapuram, Kerala. All students from class 7th onwards can participate in the tour. Write a notice with all relevant information. You are

Srishti Madan, Class XII B, North Wave School, Pitampura. Q6. You are Ankit staff reporter of a national daily. You were asked to cover a District Science Exhibition. Mentioning all relevant details write a report

Q 7. There was a rally organized by a youth organization against rampant corruption in the society. As a reporter of “The Hindustan Times” write a report.

Mathematics

Q1. If A+B=225, prove that tanA+tanB=1-tanA tanB.

Q2.Prove that 4sinαsin (α+

)sin(α+

)=sin3α.

Q3.If cos(x+y)=m cos(x-y),then prove that tanx=

coty.

Q4.Prove that cos

+cos

+cos

+cos

=0

Q5.Find the least value ofsin2x+cosec2x.

Q6.Prove that

=tan(

+

).

Q7.Prove that

=

Q8.Prove that sin20sin40sin60sin80=

Q9.If cos(A+B)sin(C-D)=cos(A-B)sin(C+D) then prove that tanAtanBtanC+tanD=0

Q10.Evaluate cos

.

Q11 Prove that(1+cos

) (1+cos

) (1+cos

) (1+cos

)=

Q12.Solve tanx+tan2x+ tanxtan2x= Q13.Solve 3tanx+cotx=5cosecx.

Q14.Solve tanx+secx=

Q15.Prove that sin4

+ sin4

+ sin4

+ sin4

=

.

Q16 .Find the power set of A where A={1,{2,3}}.

Q17 Two finite sets have’m’and ‘ k’ elements.If the number of subsets of the first set is 112 more than the number of Subsets of the second set,then find the value of m and k.

Q18.If U={1,2,3,--------10} ,A={x:x is aprime number},B={x:x is an even number}

then write (i)A-B’ (ii)AПB’. Q19.Two sets AandB are such that n(AUB)=18,n(A’П B)=3 andn(A П B’)=5 find n(A П B).

Q20.Using property of set prove that (A-B) П (A-C)=A-(BUC). Q21.Aand B are two sets such that n(A-B)=14+x,n(B-A)=3x and n(A П B)=x.Draw a venn diagram to illustrate this information.If n(A)=n(B) then find the value of x and n(AUB).

Q22.From 50 students taking examination in mathematics, physics and chemistry each of the students has passed in at least one of the subjects,37 passed mathematics,24 physics and 43 chemistry.At most

19 passed in mathematics and physics. At most 29 passed in mathematics and chemistryand atmost 20 in physics and chemistry.What is the largest possible number that could have passed in all three subjects.

Q23.From amongst 6000 literate individuals of a city ,50% read newspaper A,45%read newspaperB and

25% read neither A nor B. How many individuals read both the newspaper A as well as B.

Q24.In a beauty contest ,half the number of judges voted for miss A,

of them voted for miss B,10 voted

for both and 6 did not vote for either miss A or miss B.find how many judges in all were present there.

Q25. In a group of 50 students, the number of students studying French, English and Sanskrit were found to be as follows:

French = 17, English = 13, Sanskrit = 15, French & English = 9, English & Sanskrit = 4,

French & Sanskrit = 5, English, French & Sanskrit = 3 Q 26. Find the number of students who study

i. French only ii. English only iii. Sanskrit only

iv. French & English but not sanskrit v. English & Sanskrit but not french

vi. At least one of the three language vii. None of the three language

Q. 27 Solve these:-

(i) find the principal solution of cosec x =-2. (ii) find the principal solution of find the tanx=-1.

(iii)find the general solutionof sinx+1=0. (iv) find the general solution of tan3x=cotx.

(v) find the general solution of 2sin2x=3cosx. (vi) solve 4sinxcosx+2sinx+2cosx+1=0.

(vii) Solvesinx+sin3x+sin5x=0.if secxcos5x+1=0,where 0<x>

then find the value of x.

(viii) If cosx=cosαcosβ; prove that tan

tan

=tan2

.

(ix) Find the range of the function f(x)=1+3cos2x

(x) find the domain and range of f(x) =

(xi) sinx+siny=a andcosx+cosy=b find sin(x+y). (xii) Prove that cos20+cos100+cos140=0.

(xiii) A positive acute angleis divided into two parts whose tangents are

and

.prove that angle is

.

(xiv) Prove that cos(

+x)=cosx-sinx.

Physics

1. The value of universal gravitation constant G=6.67×10-11Nm2kg-2, find its value in g-1cm3s-2.

2. In successive experimental measurement, the refractive index of glass turned out to be 1.54, 1.45,

3. 1.53, 1.56, 1.44 and 1.54. Compute (i) mean refractive index, (ii) mean absolute error, (iii) fractional

error and (iv) percentage error. (v) Express the refractive index with the error limits.

4. The least count of a screw gauge is 0.001 cm. The diameter of a wire measured by it is 0.225 cm.

Find out the percentage error in this measurement.

5. Find the maximum probable error in measuring the volume of a box of length 24.0 cm, width

18.6 cm and height 6.0 cm.

6. Subtract the following with due consideration of signification figures.

a.

b.

c.

d.

e.

7. If the units of force, energy and velocity are 10 N, 100 J and 5 ms-1 respectively, then obtain

the units of length, mass and time.

8. Assuming that the mass m of the largest stone that can be moved by a flowing river depends

upon the velocity v of water, its density and acceleration due to gravity g. Show that m varies

as the sixth power of the velocity of water in the river.

9. Find the dimensions of the constant in the relation , where E is energy, x is

distance and t is time.

10. The value of a force is 36 units in a system having metre, kilogram and minute as fundamental

units. What will be its value in CGS system?

11. A particle of mass m is tied to a string and swung around in a circular path of radius r with a

constant speed v. Derive a formula for the centripetal force f exerted by the particle on our hand,

using the method of dimensions.

12. A train travels +0 kmh-1 for 0.52 hour, 30 kmh-1 for the next 0.24 hour and then 70 kmh-1 for the

next 0.71 for the next 0.71 hour. What is the average speed for the trip?

13. A body travels a distance x1 with velocity v1 and a distance x2 with velocity v2 in the same

directions. What is the average velocity of the body?

14. A train which is 150 m long is moving due south at a speed of 10 ms-1. A parrot flies at a speed of 5

ms-1 towards north parallel to the rail track. In what time the parrot shall cross the train?

15. The motion of a car along y-axis is given by the relation y=t3-6t2+9t+5, where y is in metre and it is

in second. Calculate the position, acceleration and total distance travelled at t=5 second.

16. A point traversed half the distance with a velocity v0. The remaining part of the distance was

covered with velocity v1 for half the time, and with velocity v2 for the other half of the time. Find the

mean velocity of the point averaged over the whole time of motion.

17. A body travels 200 cm in the first two second and 220 cm in next four second. What will be the

velocity at the end of seventh second form start?

18. The velocity of a train increases at a constant rate α from zero to v and then remains constant for an

interval and finally decreases to zero at a constant rate β. If x be the total distance covered by the

particle, then prove that the total time taken is

19. A particle moves along x-axis in such a way that its co-ordinate x varies with time t according to the

equation .

20. The displacement of a particle moving in one dimension under the action of a constant force is

related to the time t by the equation , where x is in metre and t is in second. Find the

displacement of the particle when its velocity is zero.

21. Between two station, a train accelerates uniformly at first, then moves with constant speed and

finally retards uniformly. If the ratio of times taken is 1:8:1 and the greatest speed is 60 kmh-1, find the

average speed over whole journey.

22. A ball is projected horizontally with a velocity of 3ms-1. What is the velocity of the ball after 0.4

second? Given : g=10 ms-2.

23. Prove that the maximum horizontal range is four times the maximum height attained by the

projectile when fired at an inclination so as to have the maximum horizontal range.

24. Prove that a gun will shoot three times as high when its angle of elevation is 600 as when it is 300,

but will carry the same horizontal distance.

25. Prove that the range of a projectile for two angles α and β is the same where α+β=900.

26. Prove that for angle of projection which exceed or fall short of 450 by equal amounts, the ranges are

equal.

27. A table clock has its minute hand 4.0cm long. Find the average velocity of the tip of the minute

hand (a) between 6.00 a.m. to 6.30 a.m. and (b) between 6.00 a.m. to 6.30 p.m.

28. A particle starts with an initial velocity 2.5 m/s along the positive x direction and it acceleration

uniformly at the rate 0.50 m/s2. (a) Find the distance travelled by it in the first two seconds (b) How

much time does it take to reach the velocity 7.5 m/s? (c) How much distance will it cover in reaching

the velocity 7.5 m/s?

29. A particle having initial velocity u moves with a constant acceleration a for a time t. (a) Find the

displacement of the particle in the last 1 second. (b) Evaluate it for u=5m/s, a = m/s2 and t=10s.

30. A man has to go 50m due north 40m due east and 20 m due south to reach a field. (a) What

distance he has to walk to reach the field? (b) What is his displacement form his houses to the field?

Chemistry

CH-SOME BASIC CONCEPTS

I. Very short answer type questions:-

Q1. What is the SI unit of molarity?

Q2. What do you understand by stoichiometric coefficients in a chemical equation?

Q3. Give an example of a molecule in which the ratio of the molecular formula is six times the empirical

formula.

Q4. What is an atom according to Dalton’s atomic theory?

Q5 Why air is not always regarded as homogeneous mixture?

Q6. Define the term ‘unit’ of measurement.

Q7. Define law of conservation of mass.

Q8. How is empirical formula of a compound related to its molecular formula?

Q9. How many oxygen atoms are there in 18 g of water?

Q10. Name two factors that introduce uncertainty into measured figures.

Q11. State Avogadro’s law.

Q12. How is 0.5 ml of NaOH different from 0.5 M of NaOH?

Q13. What is one a.m.u. or one ‘u’?

Q14. What is the number of significant figures in 1.050 x 105 ?

II. Short Answer Type Questions-

Q1. Define molality. How does molality depend on temperature?

Q2. A compound on analysis was found to contain C = 34.6%, H = 3.85% and O = 61.55%. Calculate the

empirical formula.

III. Calculate:

(a) Mass of 2.5 gram atoms of magnesium,

(b) Gram atom in 1.4 grams of nitrogen (Atomic mass Mg = 24, N = 14)

Q1.The density of water at room temperature is 1.0 g/mL. How many molecules are there in a drop of

water if its volume is 0.05 mL?

Q2.What is the molecular mass of a substance each molecule of which contains 9 atoms of carbon, 13

atoms of hydrogen and 2.33 x 10 g other component?

IV. Long Answer Type Questions

Q1. Calculate no. of carbon and oxygen atoms present in 11.2 litres of C0 at N.T.P.

Q2. KClO3 on heating decomposes to give KCl and O2 . What is the volume of O2 at N.T.P liberated by

0.1 mole of KClO3 ?

Q3. 10 ml of a solution of NaCl containing KCl gave on evaporation 0.93 g of the mixed salt which gave

1.865 g of AgCl by reacting with AgNO3 solution. Calculate the quantity of NaCl in 10 mL of the

Question 4. The cost of table salt (NaCl) and table sugar (C H O ) are Rs 1 per kg and Rs 6 per kg

respectively.Calculate their cost per mole.

Q4. A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0.4 mole of ozone gas. Which of

the two flasks contains greater number of oxygen atoms?

Ch-STRUCTURE OF ATOM

Q 1. The uncertainty in the position of a moving bullet of mass 10 g is 10-5m. Calculate the uncertainty in

its velocity?

Q 2. The uncertainty in the position and velocity of a particle are 10 -10m and 5.27 x 10-24m/s respectively.

Calculate the mass of the particle.

Q3. With what velocity must an electron travel so that its momentum is equal to that of a photon of

wavelength = 5200 A?

Q5. Calculate the de Broglie wavelength of an electron moving with 1% of the speed of light?

Q6. The kinetic energy of an electron is 4.55 x 10 -25 J. The mass of electron 9.1 x 10-1 kg. Calculate

velocity, momentum and the wavelength of the electron?

Q7. What is the wavelength for the electron accelerated by 1.0 x 104 volts?

Q8. In a hydrogen atom, the energy of an electron in first Bohr’s orbit is 13.12 x 105 J/mol. What is the

energy required for its excitation to Bohr’s second orbit?

Q9. What were the weaknesses or limitations of Bohr’s model of atoms? Briefly describe the quantum

mechanical model of atom.

Q10. State and explain the following:

(i) Aufbau principle

(ii) Pauli exclusion principle.

(iii) Hund’s rule of maximum multiplicity.

(iv) Explain Quantum numbers?

Biology

Cell Cycle and Cell Division

2 Marks Questions

1. What is the importance of chromosomes replication during interphase?

2. Distinguish between metaphase of mitosis & metaphase I of meiosis? 3. How does duration affect the cell cycle in organism?

4. Why is meiosis called reductional division & mitosis called equational division? 5. Write three processes which take place in interphase? 6. Enumerate the significance of mitosis?

7. Differentiate between chromatin and chromate. 8. Give the terms for the following:

a) The pet between 2 successive mitotic divisions b) Colt division in which chromosome number is halved. c) Phase in cell cycle where DNA is synthesized.

d) Division of nuclear material. 3 Marks Questions

1. What is the significance of meiosis? 2. Differentiate between animal cell mitosis & plant cell mitosis? 3. Write six differences between mitosis & meiosis?

4. What are homologous chromosomes? What happens to homologous chromosome during meiosis ? 5. What will be the DNA content of a cell at , after S and ., ,if the content after M phase is 2C.

5 Marks Questions 1. Explain the various phases of meiosis I division? 2. What is mitosis? Give a brief account of mitosis in animal cell?

Computer Science

Note: Answer the following questions in your notebook.

Q.1 How are human compared with computers with respect to speed and capacity of information processing?

Q.2 How are digital, analog and hybrid computers different from one another? Q.3 Define the types of computers with the help of diagrams.

Q.4 Discuss booting process of an operating system.

Q.5 Differentiate between a syntax error and a logical error in a program. When is each type of error likely

to be found? Q.6 Give an example of Run-time error that might occur as the result as the result of operational problem.

Q.7. Convert the following binary numbers to decimal: (i) 101.1101 (ii) 11101.0101 Q.8. Convert each of the following decimal numbers to octal: (i) 65535 (ii) 919 Q.9. Convert these hex values to decimal: (i) 37FD (ii) 2C0

Q.10. Convert these decimal values to hex: (i) 2048 (iii) 4095

Informative Practices

Q.1 Explain Operating System and different types of OS with example. Q.2 Write an Article on “E-Waste” Disposal.

Q.3 Explain the following terms: a. Computer Viruses

b. Spyware c. Spamming d. PC Intrusion

e. Phishing and Pharming f. Hacking

CookieQ.4 Write the History of Java. Q.5 Name the basic Graphical Components of Swing and explain its usage. Q.6 Define the following terms: a. Java Character Set b. Tokens c. Constant and Variable.

Q.7 What is MySQL? By which company was it developed? Explain its various key features. Q.8 Define different Data types in MySQL? Q.9 Explain classification of SQL statements.

Q.4 Write the History of Java. Q.5 Name the basic Graphical Components of Swing and explain its usage.

Q.6 Define the following terms: a. Java Character Set b. Tokens c. Constant and Variable. Q.7 What is MySQL? By which company was it developed? Explain its various key features. Q.8 Define different Data types in MySQL?

Q.9 Explain classification of SQL statements.

Accountancy

Q.1 Explain the process of Accounting.

Q.2 Explain about the branches of Accounting. Q.3 Differentiate between Internal and External Users.

Q.4 Explain about the Traditional classification of Account. Q.5 Differentiate between Cash basis and Accrual Basis. Q.6 Explain about the classification of Assets.

Q.7 Write short notes on : a) Outstanding Expenses. b) Accrued Income. c) Livestock. d) Depreciation.

Q.8 From the following transactions, Prepare Accounting Equation: a) Business started with cash Rs 5,00,000 and goods Rs 2,00,000. b) Purchased goods Rs 20,000 in cash and on Rs 30,000 on credit.

c) Sold goods costing Rs 10,000 for Rs 12,000 to Akash. d) Rent paid Rs 20,000 and salary paid Rs 15,000.

e) Purchased furniture Rs 50,000 in cash. f) Interest due but not paid Rs 10,000. g) Cash deposited into bank Rs 50,000.

h) Depreciation on furniture Rs 5,000.

Q.9 Aman started business with capital Rs 10,00,000. His assets and liabilities were Rs 18,00,000

And Rs 6,00,000 respectively. During the year, he withdrew Rs 1,20,000 for his personal use and Invested Rs 80,000 as additional capital. Find out closing capital and profit earned during the year. Q.10 From the following transactions, Prepare Journal proper for the year ended March, 2018

March 2 Business commenced with cash Rs 8,00,000. March 5 Purchased machinery Rs 1,00,000 in cash.

March 8 Purchased goods Rs 15,000 form Mukesh. March 12 Goods destroyed by fire Rs 10,000. March 16 Rent paid Rs 40,000 including Rs 20,000 for April, 2018.

March 20 Goods distribute as sample Rs 5,000. March 24 Sold goods Rs 20,000 and payment made by cheque.

March 28 Income tax paid Rs 50,000. Business Studies

Q.1 How many types of human activities have you studied. Name them. Q.2 Explain about commerce in detail.

Q.3 State any five role of profit in business. Q.4 Write short notes on: a) Genetic Industry. b) Communication. c) Peer-recognition. d) Warehousing.

Q.5 How does a business face risk? Explain. Q.6 Discuss about the characteristics of “Sole Proprietorship”.

Q.7 Explain about the types of Partners. Q.8 What is the role of Co-operative societies now a days? Q.9 Differentiate between Private and Public company on any five basis.

Q.10 What is HUF? Explain its five features. Economics

Q.1 Differentiate between: a) Positive and Normative economics b) Microeconomics and Macroeconomics

c) MRT and MRS d) PPC and IC

Q.2 Write all the properties of : a) Indifference Curve (IC) b). PPF Q.3 Why does an economic problem arise? Explain in detail.

Q.4 What is consumer equilibrium? State the condition for consumer equilibrium in case of a single commodity and in case off two or more than two commodities.

Q.5 Explain: a) shifting and rotation of PPC b) shifting and rotation of Budget line Q.6 Write limitations of - a) Mean b) Median c) Mode Q.7 Write all the formulae of- a) Mean b)Median c)Mode

Q.8 Explain the law of diminishing MU with an example.

POLITICAL SCIENCE

Q.1 “India is a sovereign state”. Explain. Q.2 ‘Indian constitution establishes coordination between rigidity and flexibility.’ Explain.

Q.3 Members of the Constituent Assembly were not directly elected by citizens of India, yet the Constituent Assembly was a representative body, how could we say so?

Q.4 What opinion will you have of a person who does not exercise his right to vote?

Q.5 ‘Politics is much more than the political leaders do.” Explain your answer with suitable examples. Q.6 What is politics? Clarify with one definition Members of the Constituent Assembly were not directly

elected by citizens of India, yet the Constituent Assembly was a representa tive body, how could we say so?

Q.7 Do you agree with the view that the constitution of India distributed powers in a way that no single branch

of government could subvert the democratic character of the constitution? Q.8 what were the objectives resolution given by Pt. Jawaharlal Nehru? Discuss in detail.

Q.9 The constitution of India came into force more than sixty-five years ago. But we could have the desired result. Why is it so?

Q.10 Mention the political theory or political value that lies at the root of the following statements:

A) Constitution of India has abolished Untouchability. B) Aliens or those who are on a visit to India do not have a right to vote.

C) Constitution of India guarantees equality before law to all citizens. D) Screening of films should not be banned. E) I have the liberty to choose what courses of study I want to pursue-science, commerce and Humanities.

History

1. Read the chapter 2: Writing and city life’ thoroughly. 2. Prepare brief notes on :- a.Location of Mesopotamia showing the same in the map.

b. Significance of Urbanisation c. The development and legacy of writing.

d. Life in the Mesopotamian city. e. The palace at Mari of king Zimrillim ( 1810 – 1760 BCE)

Sociology

I Answer the following questions in fair notebook:- Q1. Write the different aspects of the term “Society’. How is it different from your common sense understanding?

Q2. Write difference between Sociology and History. Q3. Write the differences between Sociology and Economics.

Q4. Write difference between Sociology and Political Science. Q5. How success of French Revolution and Industrial Revolution caused changes in life of people universally? Q6. Identify any personal problem that you or your friends or relatives are facing. Attempt a sociological

understanding. Q7. Identify the different roles and status that you play and are located in.

Q8. Discuss with your grandparents, what social issues were existing in their childhood and adulthood. What were the solution to those problems?

Physical Education

1. What is physical Education? What is the importance of physical education in life? 2. Elucidate all the career options in physical education.

3. What is IOA? Explain its role and responsibilities in our country. 4. Explain physical education in ancient times and its roles.

5. Explain the whole event of ancient Olympics. 6. Explain the opening ceremony of modern Olympics. 7. How did ancient Olympic originated, write two stories about it.

8. Draw the Olympic flag. 9. Explain the differences between fitness and wellness. What is the importance of positive lifestyle?

10. Explain about the major awards give in sports. 11. Explain all the components of physical fitness. 12. How physical education helps in preventing diseases and improves lifestyle.

13. What are the aims and objectives of adaptive physical education? 14. Explain the concept of inclusion.

15. Explain integrated physical education.