1

Class – XII

fo"k;&jlk;u foKku@Sub-CHEMISTRY fo"k; dksM&312@Sub. Code-312

I. fjDr LFkkuksa dks lgh mÙkj Hkjsa@Fill in the blanks %&

1. feJ.k dks cuuk--------------------------ifjoÙkZu gSA

Mixture is made due to..........................change.

2. nzo dh izokg--------------------------}kjk fu/kkZfjr gksrk gSA

Flow of liquid is determined by..........................

3. BF3 ,d --------------------- vfHkdeZd gSA

BF3 is .................. reagent.

4. izkÑfrd jcj dks xa/kd ds lkFk xeZ djus dh fØ;k ---------------- dgykrh gSA

The process of heating natural rubber with sulphur is called .................

5. DNA esa fof'k"V HkLe --------------------- gksrk gS tks RNAesa ekStwn ugha jgrkA

DNA consists of a unique base .............. which is not present in RNA.

6. vEy o"kkZ ds ty ds pH dk eku yxHkx ----------- gksrk gSA

The value of pH of acid rain water is about ...............

7. ----------------------- VsQykWu cgqyd dk eksuksej gSA

.................. is the monomer of teflon polymer.

8- MX4 esa ¼M = lewg 14 dk rRo½ ---------------- izladj.k ik;k tkrk gSA

.................... hybridization is present in MX4 (M = element of Group 14).

9. cksjDl dk vkf.od lw= --------------- gSA

Molecular formula of Borax is ................

10. lksfM;e ,DlVªSDV dks ,lhfVd vEy }kjk vEyhÑr dj ysn ,lhVsV ?kksy

feykus ij ;fn dkyk vo{ksi izkIr gks rks ----------------------- mifLFkr ekuk tkrk gSA

2

Upon mixing lead acetate solution to sodium extract acidified with

acetic acid, if black ppt is obtained, ................ is supposed to be

present.

II. cgqfodYi iz'u@Multiple choice questions:

1. buesa ls dkSu izcyre vEy gS \

¼d½ HCl ¼[k½ H Br ¼x½ HI ¼?k½ HF

Which is the strongest acid among the following ?

(a) HCl (b) H Br (c) HI (d) HF

2- ukbZVªkstu ds NBs bysDVªkWu dk DokUVe la[;k dkSu gS \

¼d½ n = 1 l = 0 m = 1 s = + ½

¼[k½ n = 2 l = 0 m = 0 s = + ½

¼x½ n = 2 l = 0 m = 0 s = + ½

¼?k½ n = 1 l = 1 m = 0 s = + ½

The quantum number of sixth electron of nitrogen ?

(a) n= 1 l = 0 m = 1 s = + ½

(b) n = 2 l = 0 m = 0 s = + ½

(c) n = 2 l = 0 m = 0 s = + ½

(d) n = 1 l = 1 m = 0 s = + ½

3- Øksfe;e dk dkSu lk bysDVªkWfud foU;kl lgh gS \

¼d½ 1s2 2s

2 2p

6 3s

2 3p

6 4s

1 3d

5

¼[k½ 1s

2 2s

2 2p

6 3s

2 3p

6 3d

6

¼x½ 1s

2 2s

2 2p

6 3s

2 3p

6 4s

2 3d

4

¼?k½ buesa ls dksbZ ugha

Which is the correct electronic configuration of Cr ?

(a) 1s2 2s

2 2p

6 3s

2 3p

6 4s

1 3d

5

(b) 1s

2 2s

2 2p

6 3s

2 3p

6 3d

6

(c) 1s

2 2s

2 2p

6 3s

2 3p

6 4s

2 3d

4

3

(d) None of the above

4- QkfeZd vEy esa dkcZu dk dkSu lk izlaldj.k gS \

¼d½ Sp ¼[k½ Sp2 ¼x½ Sp3 ¼?k½ Sp

3d

The hybridisation of Carbon in formic acid ?

(a) Sp (b) Sp2 (c) Sp

3 (d) Sp

3d

5- ijek.kq dk vkdkj oxZ esa

¼d½ Åij ls uhps ?kVrk gS ¼[k½ Åij ls uhps c<+rk gS

¼x½ dksbZ ifjorZu ugha gksrk gS ¼?k½ buesa ls dksbZ ugha

The atomic size in a group

(a) Decreases from top to bottom (b) Increases from top to bottom

(c) No change (d) Now of the above

6- buesa dkSu pqEcdh; (paramagnetic) ugha gS \

¼d½ H+

2 ¼[k½ O2 ¼x½ B2 ¼?k½ O2

+2

Whic is not paramagnetic

(a) H+

2 (b) O2 (c) B2 (d) O2

+2

7- buesa ls dkSu rkiØe ij fuHkZj ugha djrk gS \

¼d½ eksy[kk ¼[k½ eksyyrk ¼x½ lekU;rk ¼?k½ bueasa ls dksbZ ugha

Which of the following is independent of temperature ?

(a) Molarity (b) Molality (c) Normality (d) None of the above.

8- bFkkbZy ,Ydksgy rFkk MkbZfeFkkby bFkj buesa ls fdlds mnkgj.k gSa \

¼d½ VkVksesjhTe ¼[k½ esVkesjhTe ¼x½ fØ;k'khy ewyd le;ork

¼?k½ lajpuk le;ork

Ethyl alcohol and dimethyl ether are the example of

(a) Tantomerism (b) Metamerism

(c) Functional group isomerism (d) Structural isomerism

9- ,flVhd vEy ds lksfM;e yo.k dks lksMk ykbe (NaOH+CaO) ds lkFk xeZ djus

ij dkSu xSl curh gS \

4

¼d½ feFksu ¼[k½ C;wVsu ¼x½ izksisu ¼?k½ bFksu

On heating sodium salt of acitic acid with sodalima (NaOH + CaO) the gas

evolved is -

(a) Methane (b) Butane (c) Propane (d) Ethane

10- izksihu isjksDlkbM dh mifLFkfr esa HBr ls izfrfØ;k djrk gS rks fuEu esa ls D;k

cusxk \

¼d½ n- izksikbZy ¼[k½ vkblks izksikbZy czksekbM

¼x½ 1] 2 & MkbZczkseks izksisu ¼?k½ izksisu

Propane reacts with HBr in presence of of peroxide to give

(a) n-propyl bromide (b) isopropyl bromide

(c) 1, 2-dibromide propane (d) propane

11- fdl izfrdkjd dh lgk;rk ls ,Ydksgy ls gSyks,ydsu ugha cuk;k tk ldrk gS\

¼d½ HCl ¼[k½ HBr ¼x½ HI ¼?k½ KBr

Which reagent cannot be used to prepare halwalkane from alcohol ?

(a) HCl (b) HBr (c) HI (d) KBr

12- OF2 esa vkWDlhtu dk vkWDlhdj.k la[;k D;k gS \

¼d½ -2 ¼[k½ +2 ¼x½ 'kwU; ¼?k½ &1

What is the oxidation number of oxygen in OF2 ?

(a) -2 (b) +2 (c) Zero (d) -1

13- buesa ls dkSu fjMkWDl izfrfØ;k gS \

¼d½ AgNO3 + NaCl AgCl + NaNO3

¼[k½ NaOH + HCl NaCl + H2O

¼x½ NH3 + HCl NH4Cl

¼?k½ Zn + CuSO4 ZnSO4 + Cu

5

14- dkSu lk gSykstu leqæh ?kkl ls curk gS \

¼d½ F2 ¼[k½ Cl2 ¼x½ Br2 ¼?k½ I2

Which halogen is prepared from sea weeds ?

(a) F2 (b) Cl2 (c) Br2 (d) I2

15- izFke dksfV ds fof'k"V xfr (specific rate) fLFkjkad dk D;k ek=d gksrk gS \

¼d½ mole dm-3

s-1

¼[k½ mole dm-3

¼x½ mole s-1

¼?k½ s-1

Which is the unit of specific rate constant for first order reaction ?

(a) mole dm-3

s-1

(b) mole dm-3

(c) mole s-1

(d) s-1

16- buesa ls dkSu ÝhvkWu dk lw= gS \

¼d½ CCl2F2 ¼[k½ CFBrCl2 ¼x½ CCl2F2 ¼?k½ CBr2F2

The formula of freon is

(a) CCl2F2 (b) CFBrCl2 (c) CBr2F2 ¼?k½ COF2

17- tfVy ;kSfxd dk fl)kar fdlus fn;k gS \

¼d½ ikWmyhax ¼[k½ okuZj ¼x½ QSjkMs ¼?k½ ysohl

The theory of co-ordination compounds was given by -

(a) Pauling (b) Werner (c) Faraday (d) Lewis

18- QkWjeyMhgkbM fuEu esa ls fdlds fuekZ.k esa iz;ksx gksrk gS &

¼d½ VsQykWu ¼[k½ csdsykbV ¼x½ xSesDlhu ¼?k½ MkbukekbV

Formaldehyde is used in the manufacture of

(a) Teflon (b) Bakelite (c) Gomaxene (d) Dynamite

19- buesa ls dkSu ikSyh gkbZMªksdkcZu gS \

¼d½ LVkpZ ¼[k½ izkÑfrd jcj ¼x½ dSjkslhu ¼?k½ Vsjhyhu

Which one of the following is polyhydrocarbon ?

(a) Starch (b) Natural Rubber (c) Carosein(d) Terylene

20- I.U.P.A.C. ds vuqlkj K4 [Fe(CN)6] dk uke

¼d½ iksVkf'k;e gsDlklk;uksQsjsV (III)

¼[k½ iksVkf'k;e gsDlklk;uksQsjsV (II)

6

¼x½ iksVkf'k;e Qsjkslk;ubM

¼?k½ iksVkf'k;e Qsjhlk;ukbM

I.U.P.A.C. name of K4 [Fe (CN)6]

(a) Potassium hexacynofemate (III)

(b) Potassium hexacynofemate (II)

(c) Potassium ferrocynide

(d) Potassium ferricynide

21. Øksfe;e dk dkSu lk bysDVªkWfud foU;kl lgh gS \

¼d½ 1s22s

22p

63s

23p

64s

13d

5

¼[k½ 1s22s

22p

63s

23p

63d

6

¼x½ 1s22s

22p

63s

23p

63d

44s

2

¼?k½ buesa ls dksbZ ugha

Which is the correct electronic configuration of Cr ?

(a) 1s22s

22p

63s

23p

64s

13d

5

(b) 1s22s

22p

63s

23p

63d

6

(c) 1s22s

22p

63s

23p

63d

44s

2

(d) None of the above

22- buesa ls dkSu izcyre vEy gS \

¼d½ HCl ¼[k½ HBr ¼x½ HI ¼?k½ HI

Which is the strongest acid among the following ?

(a) HCl (b) HBr (c) HI (d) HI

23- ukVªkstu ds NBs bysDVªkWu dk DokUVe la[;k dkSu gS \

¼d½ n = 1, l = 0, m = 1, s = + ½

¼[k½ n = 2, l = 1, m = 0, s = + ½

¼x½ n = 2, l = 0, m = 0, s = + ½

¼?k½ n = 1, l = 1, m = 0, s = + ½

The quantum number of sixth electron of nitrogen is ?

7

(a) n = 1, l = 0, m = 1, s = + ½

(b) n = 2, l = 1, m = 0, s = + ½

(c) n = 2, l = 0, m = 0, s = + ½

(d) n = 1, l = 1, m = 0, s = + ½

24- ijek.kq dk vkdkj oxZ esa

¼d½ mij ls uhps ?kVrk gS ¼[k½ mij ls uhps c<+rk gS

¼x½ dksbZ ifjorZu ugha gksrk gS ¼?k½ buesa ls dksbZ ugha

The atomic size in a group

(a) decreases from top to bottom

(b) increases from top to bottom

(c) No change

(d) None of the above

25- QkfeZd vEy esa dkcZu ij dkSu lk izlaLdj.k gS \

¼d½ Sp ¼[k½ Sp2

¼x½ Sp3 ¼?k½ Sp

3d

The hybridisation of carbon in formic acid is -

(a) Sp (b) Sp2

(c) Sp3 (d) Sp

3d

26- buesa dkSu pqEcdh; (Paramagnetic) ugha gS \

¼d½ H2+

¼[k½ O2 ¼x½ B2 ¼?k½ O2+2

Which is not paramagnetic ?

(a) H2+

(b) O2 (c) Br (d) O2+2

27- buesa ls dkSu rkiØe ij fuHkZj ugha djrk gS \

¼d½ eksyjrk ¼[k½ eksyyrk ¼x½ lekU;rk ¼?k½ buesa ls dksbZ ugha

Which of the following is independent of temperature ?

(a) molarity (b) molality (c) normality (d) None of the above

8

28- bFkkbZy ,Ydksgy rFkk MkbZfeFkkby bFkj buesa fdlds mnkgj.k gSa \

¼d½ VkVksesjhTe ¼[k½ esVkesjhTe ¼x½ fØ;k'khy ewyd le;ork ¼?k½ lajpu le;ork

Ethyl alcohol and dimethyl ether are the example of -

(a) Tantamerism (b) metamerism (c) Functional group isomerism

(d) Structural isomerism

29- ,sflVhd vEy ds lksfM;e yo.k dks lksMk ykbZe (NaOH + CaO) ds lkFk xeZ

djus ij dkSu xSl curh gS \

¼d½ feFksu ¼[k½ C;wVsu ¼x½ izksisu ¼?k½ bFksu

On heating sodium salt of acitic acid with sodalimo (NaOH + CaO) the gas

evolved.

(a) Methane (b) Butane (c) Propane (d) Ethane

30- izksisu isjksDlkbM dh mifLFkfr esa HBr ls izfrfØ;k djrk gS rks fuEu ls D;k

cusxk \

¼d½ n - izksikbZy czksekbM ¼[k½ vkblks izksikby czksekbM

¼x½ 1] 2 & MkbZczkseks izksisu ¼?k½ izksisu

Propane reacts with HBr in presence of peroxide to give -

(a) n-Propyl bromide (b) isopropyl bromide

(c) 1, 2 - dibromo propane (d) O2+2

31- fdl izfrdkjd dh lgk;rk ls ,Ydksgy ls gSyks,ydsu ugha cuk;k tk ldrk\

¼d½ HCl ¼[k½ HBr ¼x½ HIr ¼?k½ KBr

Which reagent cannot be used to prepare haloalkane from alcohol ?

(a) HCl (b) HBr (c) HIr (d) KBr

32- OF2 esa vkWDlhtu dk vkWDlhdj.k la[;k D;k gS \

¼d½ -2 ¼[k½ +2 ¼x½ Zero ¼?k½ -1

What is the oxidation number of oxygen in OF2.

33- buesa ls dkSu fjMkWDl izfrfØ;k gS \

¼d½ AgNO3 + NaCl AgCl + NaNO3

¼[k½ NaOH + HCl NaCl + H2O

9

¼x½ NH3 + HCl NH4Cl

¼?k½ Zn + CuSO4 ZnSO4 + Cu.

Which is the redox reaction ?

(a) AgNO3 + NaCl AgCl + NaNO3

(b) NaOH + HCl NaCl + H2O

(c) NH3 + HCl NH4Cl

(d) Zn + CuSO4 ZnSO4 + Cu

34. izFke dksVh ds fof'k"V xfr (Specifix rate) fLFkjkad dk D;k ek=d gksrk gS \

¼d½ mole dm-3

s-1

¼[k½ mole dm-3

¼x½ mole s-1

¼?k½ S-1

Which is the unit of specific rate constant for first order reaction ?

(a) mole dm-3

s-1

(b) mole dm-3

(c) mole s-1

(d) S-1

35. dkSu lk gSykstu leqæh ?kkl ls curk gS \

¼d½ F2 ¼[k½ Cl2 ¼x½ Br2 ¼?k½ I2

Which halogen is prepared from sea weeds ?

(a) F2 (b) Cl2 (c) Br2 (d) I2

36. bueasa ls dkSu ÝhvkWu dk lw= gS \

¼d½ CCl2F2 ¼[k½ CFBrCl2 ¼x½ CBr2F2 ¼?k½ COF2

The formula of freon is -

(a) CCl2F2 (b) CFBrCl2 (c) CBr2F2 (d) COF2

37. tfVy ;kSfxd dk fl)kUr fdlus fn;k gS \

¼d½ ikWmyhax ¼[k½ okuZj ¼x½ QSjkMs ¼?k½ ysohl

The theory of co-ordination compounds was given by

(a) Pauling (b) Warnar (c) Faraday (d) Lewis

38. QkWjeyMhgkbM fuEu easa ls fdlds fuekZ.k esa iz;ksx gksrk gS \

¼d½ VsQykWu ¼[k½ csdsykbV ¼x½ xSesDlhu ¼?k½ MkWbukekbV

Formaldehyde is used in the manufacture of

(a) Teflon (b) Bakalite (c) Gammaxene (d) dynamite

39. buesa ls dkSu ikSyh gkbMªksdkcZu gS \

¼d½ LVkpZ ¼[k½ izkÑfrd jcj ¼x½ dSjkslhu ¼?k½ Vsjhyhu

Which one of the following is polyhydrocarbon ?

10

(a) Starch (b) Natural rubber (c) Carosein (d) Terylene <

40. I.U.P.A.C. ds vuqlkj K4 [Fe(CN)6] dk uke

¼d½ iksVkf'k;e gsDlklk;uksQsjsV (III)

¼[k½ iksVkf'k;e gsDlklk;uksQsjsV (II)

¼x½ iksVkf'k;e Qsjkslk;ubM

¼?k½ iksVkf'k;e Qsjhlk;ukbM

I.U.P.A.C. name of K4 [Fe (CN)6]

(a) Potassium hexacynofemate (III)

(b) Potassium hexacynofemate (II)

(c) Potassium ferrocynide

(d) Potassium ferricynide

41. buesa ls dkSu vpqacdh; gS \

Which of the species is paramagnetic ?

(a) CO (b) 𝑂2− (c) CN

- (d) NO

+

<

42. eksyjrk dh vfHkO;fDr dh tkrh gS

¼d½ xzke@yhVj ¼[k½ yhVj@eksy ¼x½ eksy@yhVj ¼?k½ eksy@1000 xzke

Molarity is expressed as

(a) gram/litre (b) litres/mole (c) moles/litre (d) moles/1000 gram

43. vfHkfØ;k dh Lor% izofrZrk lHkh rkiekuksa gsrq vko';d gS fd

¼d½ G ,oa H udkjkRed gS ¼[k½ H = G = 0

¼x½ G ,oa H /kukRed gS ¼?k½ H < G

For a reaction to be spontaneous at all temperatures, it is essential to have

(a) H and G are negative (b) H = G = 0

(c) H and G are positive (d) H < G

11

44- buesa ls dkSu jsfM;kslfØ; rRo gS \

Which one of the following is a radioactive element ?

(a) lksfM;e (Sodium) (b) iksVSfl;e (Potassium)

(c) lhfl;e (caesium) (d) Ýk¡fl;e (francium)

45. isUVsu (C5H12) esa fdrus leko;oksa dh la[;k lEHko gS \

How many isomers are possible in pentane (C5H12) ?

(a) 2 (b) 3 (c) 5 (d) 9

46- ty dh vLFkk;h dBksjrk ?kqyu'khy ------------------------- ds dkj.k gksrk gSA

Temporary hardnes of water is due to soluble

(a) Ca(HCO3) (b) CaCl2

(c) CaSO4 (d) Ca3(PO4)2

47. buesa ls dkSu xSefDlu ds uke ls tkuk tkrk gS \

Which one of the following is known as gammaxine ?

(a) CFC (b) BHC (c) DDT (d) TNT

48. KMnO4 esa Mn dk vkWDlhdj.k la[;k -------------- gSA

Oxidation number of Mn in KMnO4 is

(a) +7 (b) -7 (c) +1 (d) -1

49. mRØe.kh; vfHkfØ;k esa mRizsjd

¼d½ vxz vfHkfØ;k dh xfr dks c<+krk gS

¼[k½ i'p vfHkfØ;k dh xfr dks c<+krk gS

¼x½ vxz ,oa i'p nksuksa vfHkfØ;kvksa dh xfr c<+krk gS

¼?k½ vfHkfØ;k dh lkE; fLFkjkad dks cny nsrk gS

In a reversible reaction, catalyst

(a) increases the rate of the forward reaction

(b) increases the rate of the backward reaction

(c) increases the rate of the forward and backward reaction

(d) alters the equilibrium constant of the reaction

12

50- vf/k'kks"k.k dh izfØ;k gksrh gS

¼d½ m"ek'kks"kh ¼[k½ i`"Bh; ruko ¼x½ vkWDlhdj.k ¼?k½ vodj.k

Adsorption process is

(a) endothermic (b) surface tension (c) oxidation (d) reduction

51. R2NH gS

¼d½ 1o ,ehu ¼[k½ 2

o ,ehu ¼x½ 3

o ,ehu ¼?k½ prq"d veksfu;e yo.k

R2NH is

(a) 1o amine (b) 2

o amine (c) 3

o amine (d) quaternary ammonium salt

52- ------------------------------- ,d ;kSfxd gSA

¼d½ gok ¼[k½ ihry ¼x½ phuh ¼?k½ pk¡nh

........................ is a compound.

(a) air (b) brass (c) sugar (d) silver

53- ijek.kq la[;k ijek.kq esa fLFkr -------------------- dh la[;k ds leku gksrh gSA

¼d½ izksVkWu ¼[k½ U;wVªkWu ¼x½ izksVkWu$U;wVªkWu ¼?k½ izksVkWu$bysDVªkWu

Atomic number is equal to the number of ............ in an atom.

(a) Proton (b) Neutron (c) proton+neutron (d) proton+electron

54- ------------------------------- f}/kzqo vk?kq.kZ dh bdkbZ gSA

¼d½ vkse ¼[k½ MkYVu ¼x½ fMokb ¼?k½ Qktku

........................ is the unit of dipole moment.

(a) Ohm (b) Dalton (c) Debye (d) Fajan

55- vkoÙkZ lkj.kh ds fodkl esa fuEufyf[kr esa ls fdl oSKkfud dk ;ksxnku ugha gS \

¼d½ esaMyhQ ¼[k½ U;wysaMl ¼x½ ekslys ¼?k½ jnjQksMZ

Which one of the following scientists has no contribution in development of

Periodic Table ?

(a) Mendeleev (b) Newtons (c) Moseley (d) Rutherford

56- ------------------------------- ,d v)Zpkyd gSA

¼d½ flfydu ¼[k½ dkWij ¼x½ vk;ju ¼?k½ IykfLVd

........................ is a semiconductor.

13

(a) silicon (b) copper (c) iron (d) plastic

57- ÞfLFkj rki ij fdlh xSl dh æo esa foys;rk xSl ds nkc ds lekuqikrh gksrk gSAß

bl fu;e dks ------------------------- dgk tkrk gSA

¼d½ xzkge dk fu;e ¼[k½ gsujh dk fu;e ¼x½ MkYVu dk fu;e ¼?k½ gsl dk fu;e

"The solubility of a gas in a liquid is directly proportional to the pressure of

gas at constant temperature." This law is called as ________

(a) Graham's law (b) Henry's law (c) Dalton's law (d) Hess's law

58- ,aFksYih dks -------------------- ls ifjHkkf"kr fd;k tkrk gSA

Enthalpy is defined by ______________

(a) E = H + PV (b) H = E + PV (c) H = E - PV (d) E + H = PV

59- fu{kkju }kjk v;Ld dk ----------------------- fd;k tkrk gSA

¼d½ vkWDlhdj.k ¼[k½ vodj.k ¼x½ lkUæ.k ¼?k½ tkj.k

Leaching provides ___________ to the ore.

(a) oxidation (b) reduction (c) concentration (d) roasting

60- fuEufyf[kr esa ls dkSu rRo vkorZ lkj.kh esa oxZ 1 ds lnL; gSa \

¼d½ lksfM;e ¼[k½ eSXusf'k;e ¼x½ csjhfy;e ¼?k½ dSfYl;e

Which one of the following elements belongs to Group I of the periodic table?

(a) sodium (b) magnesium (c) beryllium (d) calcium

61- ------------------------------- ,d ukfHkdLusgh vfHkdeZd gSA

........................ is a nucleophilic reagent.

(a) H+ (b) N

+ O2 (c) Na

+ (d) CN

-

62- buesa ls dkSu fxzxukMZ vfHkdeZd gS \

Which one of the following is Grignard reagent ?

(a) CH3MgI (b) AlCl3 (c) BF3 (d) LiAlH4

63- Hkkjh ty dk vkf.od lw= ---------------- gSA

Molecular formula of heavy water is -

(a) H2O (b) D2O (c) T2O (d) H2O2

64- Mh Mh Vh dk iwjk uke ----------------------- gSA

14

¼d½ Mkb¶yksjks MkbfQukby Vªkb¶yksjks bFksu ¼[k½ MkbDyksjks MkbfQukby VªkbDyksjks

¼x½ Mkbczkseks MkbfQukby Vªkbczkseks bFksu ¼?k½ Mkbvk;Mks MkbfQukby Vªkbvk;Mks bFksu

Full form of DDT is _______________

(a) Difluoro Diphenyl Trifluoro ethane (b) Dichloro Diphenyl Trichloro ethane

(c) Dibromo Diphenyl Tribromo ethane (d) Diiodo Diphenyl Triodo ethane

65- vk;ju dk lcls LFkk;h vkWDlhdj.k la[;k --------------------- gSA

The most stable oxidation number of iron is __________

(a) +2 (b) +3 (c) +1 (d) +4

66- vfXujks/kh oL= cukus esa ------------------------- iz;qDr gksrk gSA

¼d½ flfydk ¼[k½ flfydu ¼x½ flfydksu ¼?k½ flfydsV

____________ is used in making fireproof clothes.

(a) silica (b) silicon (c) silicone (d) silicate

67- pkjdksy ,d -------------------------- gSA

¼d½ vf/k'kks/kd ¼[k½ vo'kks/kd ¼x½ ik;l ¼?k½ dksykWbM

Charcoal is an __________________

(a) adsorbent (b) absorbent (c) emulsion (d) colloid

68- pkydRo dk SI ekud

¼d½ vkse ¼[k½ eksg ¼x½ cksYV ¼?k½ ,fEi;j

SI unit of conductance is ________________

(a) Ohm (b) mho (c) volt (d) ampere

69- vfHkfØ;k 2A + 3B C + 2D esa dqy vk.kfodrk ------------------------ gSA

Total molecularity of the reaction 2A + 3B C + 2D is

(a) 2 (b) 3 (c) 5 (d) 6

70- H2SO3 esa S dh vkWDlhdj.k la[;k ----------------------- gSA

Oxidation number of S in H2SO3 is _____________

(a) +2 (b) +3 (c) -3 (d) +4

15

71- ---------------------------- dks Y;wdkl vfHkdeZd dgk tkrk gSA

¼d½ futZyh; ZnCl2+ HCl ¼[k½ futZyh; CaCl2

¼x½ LiAlH4 ¼?k½ P2O5

________________is known as Lucas Reagent.

(a) Anhydrous ZnCl2+ HCl (b) Anhydrous CaCl2

(c) LiAlH4 (d) P2O5

72- buesa ls dkSu lokZf/kd vEyh; gS \

¼d½ fQukWy ¼[k½ csafty ,Ydksgy ¼x½ m-DyksjksfQukWy ¼?k½ lkbDyks gsDlsukWu

Which one of the following is the most acidic ?

(a) Phenol (b) Benzyl Alcohol (c) m-chorophenol (d) Cyclo Hexanone

73- izladj.k dk mi;ksx fdl fl)kar esa T;knk gksrk gS \

In which of the following theories hybridisation is mostly used ?

(a) VBT (b) CFT (c) MOT (d) LFT

III. vfr y?kq mÙkjh; iz'u/Very Short Answer Type Questions

1. ^gfjr xzhu izHkko* ls D;k le>rs gSa \

What is understood by Green House Effect ?

2. foVkfeu B12 dh deh ls D;k gksrk gS \

What happens when there is deficiency of Vitamin B12 ?

3. ,sjkseSfVdrk ds vko';d 'kÙkksZa dk mYys[k djsaA

What are the essential conditions for aromaticity ?

4. ^izHkkodkjh ijek.kq la[;k* fdls dgrs gSa \

What do you know by the term 'effective atomic number' ?

5. dk uke fy[ksaA

H | CH3 – N – CH2 – CH3

H | CH3 – N – CH2 – CH3

16

Write the IUPAC name of

6. bZLVjhdj.k dk vFkZ Li"V djsaA

Clarify the meaning of esterification.

7. vuqla[;&xq.k/keZ fdls dgrs gSa \

What is understood by colligative properties ?

8. 𝐶𝑂32

- dk yqbl lajpuk fy[ksaA

Write Lewis structure of 𝐶𝑂32

- .

9. eksyyrk dks ifjHkkf"kr djsaA

Define the term 'Molality'.

10. pwuk ty esa dkcZu MkbvkWDlkbM xSl izokfgr djus ls jax nqf/k;k gks tkrk gSA O;k[;k

djsaA

Lime water becomes milky upon passing carbon dioxide through it. Explain

11. IUPAC uke fy[ksaA

Write IUPAC name of

structure

12. gscj fof/k ls veksfu;k dSls izkIr fd;k tkrk gS \ lehdj.k izLrqr dj mÙkj nsaA

How is NH3 gas synthesised in Haber's Process ? Answer the question with

chemical equation.

13. D;k gksrk gS tc ,fuyhu czksehu ds tyh; foy;u ds lkFk vfHkfØ;k djrk gS \

What happens when aniline reacts with aqueous solution of bromine ?

14. PVC dk iwjk uke fy[ksa A ;g fdl eksuksej ls cuk cgqyd gS \

Write full form of PVC. What is the monomer of this polymer ?

15. fuEufyf[kr jklk;fud vfHkfØ;k dks iwjk dj larqfyr djsaA

Complete the following chemical equation and balance the same.

SnCl2 + HgCl2 _______ + _______

17

IV. y?kq mÙkjh; iz'u@Short Answer Type Questions

1. cksj ijek.kq ekWMy ds nks"k crkosaA

Write the defect of Bohr's atomic model.

2. fØLVyh; ,oa vfØLVyh; Bksl esa vUrj Li"V djsaA

Differentiate crystalline and amorphous solids.

3. Cp ,oa Cu esa lEcU/k LFkkfir djsaA

Establish relation between Cp and Cu.

4. dkcZu dh prq"la;kstdrk dh O;k[;k djsaA

Explain tetravalency of carbon.

5. jklk;fud ,oa HkkSfrd vf/k'kks"k.k esa vUrj Li"V djsaA

Differentiate chemical and physical adsorption.

6. Qqysfju ls D;k le>rs gSa \ o.kZu djsaA

What is understood by the term fullerence ? Explain.

7. fjDr LFkkuksa dks Hkjdj fuEufyf[kr lehdj.kksa dks larqfyr djsaA

Fill in the blanks and balance the following equations.

(a) HCHO + NH3 ________ + _______

(b)

(c)

8- eksyjrk ,oa eksyyrk dh ifjHkk"kk nsaA

Define molarity and molality.

9. NaoH dh ek=k dh x.kuk djsa tks 250ml M/20 ?kksy cukus ds fy, pkfg,A

10- veksfu;k rFkk feFkkby vfeu esa dkSu izcy {kkj gS \

Which is stronger base ammonia or methyamine ?

11- QkfeZd vEy ,oa ,lhfVd vEy esa dkSu T;knk izcy vEy gS \

Which is stronger acid formic acid or acetic acid ?

18

12. izfrfØ;k dh xfr dh ifjHkk"kk nsaA izfrfØ;k A + 2B dk izfrfØ;k dk lehdj.k

fy[ksaA

Define rate of reaction. Write the rate equation for the reaction

A + 2B Product.

13- v;Ld dk lkUæ.k ,oa tkj.k le>kosaA

What is concentration and roasting of ore ?

14- veksfu;k rFkk feFkkby vfeu esa dkSu izcy {kkj gS \

Which is stronger base ammonia or methyamine ?

15- izfrfØ;k dh xfr dh ifjHkk"kk nsaA izfrfØ;k A + 2B dk izfrfØ;k dk

lehdj.k fy[ksaA

Define rate of reaction. Write the rate equation for the reaction

A + 2B Product.

16- QkfeZd vEy ,oa ,lhfVd vEy esa dkSu T;knk izcy vEy gS \

Which is stronger acid formic acid or acetic acid ?

17- v;Ld dk lkUæ.k ,oa tkj.k le>kosaA

What is concentration and roasting of ore ?

18- vkf.od d{kd fl)kar ds izeq[k y{k.k dk o.kZu djsaA

Describe chief charateristics of Molecular Orbital theory.

19- fdlh foy;u ds v.kqla[; xq.k/keZ ls D;k le>rs gSa \

What is meant by colligative properties of a solution ?

20- ,d foy;u esa csathu dk 30% æO;eku dkcZu VsVªkDyksjkbM esa ?kqyk gS rks csathu ds eksy

va'k dh x.kuk djsaA

In a solution 30% mass by weight of benzene is dissolved in carbon tetrachloride.

Calculate mole fraction of benzene.

19

21- fuEufyf[kr ij laf{kIr fVIi.kh fy[ksaA

Write short note on following :

(a) dkckZby ,ehu vfHkfØ;k

Carbyl Amine Reaction.

(b) jcj dk oYduhdj.k

Vulcanisation of rubber.

20- f}d yo.k ,oa tfVy yo.k esa varj Li"V djsaA

Differenciate between Double Salt and Complex Salt.

21- fojatd pw.kZ] ty ,oa bFkkby ,Ydksgy ls DyksjksQkWeZ dSls izkIr fd;k tkrk gS] o.kZu

djsaA

How is chloroform obtained from ethyl alcohol, bleaching powder and water ?

Explain.

22- -NH2 ,d vkWFkksZ] iSjk funsHkd lewg gS ijUrq -NO2 ,d esVk fuHksnd lewg gSA O;k[;k

djsaA

Explain why is -NH2 an ortho-para directing group but -NO2 is a meta directing

group.

V. nh?kZ mÙkjh; iz'u@Long Answer Type Questions.

1. foDVj es;j ijh{k.k }kjk izkFkfed] f}rh;d ,oa r````rh;d ,Ydksgy esa

foHksn dSls djsaxs\

How should you differentiate primary, secondary and tertiary alcohol by

using Victor Meyer test ?

2. ,d dkcZfud ;kSfxd A esa C = 68.85% ,oa H = 4.9% gS] vkSj ;g

NH2OH ls vfHkfØ;k djrk gSA NaOH ls izfrfØ;k ds QyLo:i ;g

B ,oa C ;kSfxd dk fuekZ.k djrk gSA ;kSfxd B HCl esa ?kqyu'khy gS tks

{kkjh; KMnO4 ls vkWDlhÑr gksdj C cukrk gSA ;kSfxd C lkUæ HCl

ds lkFk vfHkfØ;k dj ,d vEy D cukrk gS ftls {kkj ds lkFk xeZ

djus ij fQukWy izkIr gksrk gSA ;kSfxd A, B, C ,oa D dh igpku djsaA

20

An organic compound A contains C = 68.85%, H = 4.9% and reacts with

NH2OH. On treatment with NaOH it forms the compound B and C. The

compound B is soluble in HCl and can be oxidised to compound C with

alkaline KMnO4. The compound C on treatment with conc. HCl forms an

acid D which on heating with alkali gives phenol. Identify A, B, C and D.

3. [kfut ,oa v;Ld easa vUrj Li"V djsaA ckWDlkbV v;Ld esa gkWy fof/k

}kjk vyqfefu;e /kkrq dk fu"d"kZ.k dSls fd;k tkrk gS \

Differentiate the term mineral and ore. How is aluminium extracted from

its ore bauxite by Hall's process ?

4- esFksukWy rFkk ,FksukWy yxHkx ,d vkn'kZ foy;u cukrs gSa A 350 K 'kq) esFksukWy

rFkk ,FksukWy dk ok"inkc 8.1×104 rFkk 4.5×104 Nm

-2 gks rks 64 xzke esFksukWy

,oa 46 xzke ,FksukWy dks feykus ij cus feJ.k dk bl rki ij ok"i nkc ,oa

ok"i izkoLFkk esa ,FksukWy dk eksy va'k izkIr djsaA

Methanol and ethanol form an ideal solution (approx). Vapour pressure

of pure methanol and ethanol at 350 K is 8×104 and 4.5×10

4 N m

-2

respectively. Find the mole fraction of methanol in vapour pressure and

vapour state of the mixture comprising of 64g methanol and 46g ethanol

at the same temperature.

5. fuEu izfrfØ;k dks vk;u bysDVªkWu fof/k }kjk larqfyr djsaA

-----------------------------------------------------------------------------------------------------------------

fjtWDl izfrfØ;k le>kosaA

Balance the given ionic reaction by ion electron methode.

6- ifjlj.k rFkk ifjlkjhd ncko dh ifjHkk"kk nsaA v/kZ ikjxE; >hyh D;k gS \

Define osmosis and osmotic pressure. Explain permmeable membrane.

21

7. D;k gksxk tc dSfYl;e QkesZV] dSfYl;e ,lhVsV rFkk nksuksa ds feJ.k dks vyx

vyx L=ohr fd;k tk; \

What happens when calcium formate, calcium acitate and mixture of the

two ore distilled separated.

8. fuEu izfrfØ;k dks iw.kZ djsaA

¼d½ CaC2 + H2O

¼[k½ ----- + CHCl2 AlCl3

¼x½ C2H5OH + H2SO4

¼?k½ CHCl3 + NaOH

Complete the reactions.

(a) CaC2 + H2O

(b) ..... + CHCl AlCl3

(c) C2H5OH + H2SO4

(d) CHCl3 + NaOH

9- Cgksj (Bohr) ds ijek.kq jpuk dk fl)kUr fy[ksaA

Write Bohr theory of atomic structure.

10- bysDVªkWu ds DokWUVe la[;k dks le>kosaA

Explain the quantum number of electrons.

11. ,Y;qfefu;e fu"d"kZ.k dk fl)kUr fy[ksaA

Write the principle of extration for aluminium.

12- QSjkMs ds f}rh; fu;e dks le>kosaA

Explain the second law of Faraday.

13- vkn'kZ xSl lehdj.k ls D;k le>rs gSa \ okLrfod xSl vkn'kZ xSl O;ogkj ls D;ksa

fopfyr gksrh gS \

What is meant by ideal gas equation ? Why does real gas deviate from ideal gas

behaviour ? Justify your answer with Van der Waals equation.

22

14- vkstksu ijr dh egRo crk;saA fdu fo'ks"k dkj.kksa ls vkstksu fNæ fufeZr gks x;k \

vkstksu ijr dh lqj{kk dk mik; crk;saA

Mention the importance of ozone layer. How is ozone hole created ? Suggest

some safety measures from ozone layer.

15- ,sY;qfefu;e ds eq[; v;Ld dk uke crk;saA blls gkWy fof/k }kjk vY;qfefu;e dk

fu"d"kZ.k dSls fd;k tkrk gS \

Name a chief ore of aluminium ? How is aluminium extracted from it by Hall's

process ?

16- fuEufyf[kr gkfudkjd izHkkoksa dh ppkZ djsaaA

Discuss the harmful effects of the following :

(a) izdk'k jklk;fud /kwe dksgjk

Photochemical smog.

(b) vEy o"kkZ

Acid rain.

(c) Xykscy okfeZax

Global warming.