HBSE Class 12 Question Paper 2022 Chemistry

CLASS : 12th (Sr. Secondary) Code No. 5629
Series : SS-April/2021
Roll No. SET : A
jlk;u foKku
CHEMISTRY
Hkkx – I
PART – I
¼vkRefu"B iz'u½
(Subjective Questions)
ACADEMIC/OPEN
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/Re-appear Candidates)

le; : 2 21 ?k.Vs ] [ iw.kk±d : 70 ¼Hkkx–I : 35, Hkkx–II : 35½
Time allowed : 2 21 hours ] [ Maximum Marks : 70 (Part–I : 35, Part–II : 35)

iz'u&i= nks Hkkxkas eas foHkkftr gS % Hkkx–I ¼vkRefu"B½ ,oa Hkkx–II ¼oLrqfu"B½A ijh{kkFkhZ dks nksuksa Hkkxkas ds iz'ukas
ds mÙkj dks viuh mÙkj-iqfLrdk eas fy[kuk gSA iz'u&i= dk Hkkx–I ijh{kk vkjEHk gksus ij igys mÙkj&iqfLrdk
ds lkFk fn;k tk,xk rFkk Hkkx–II ds fy, vkf[kjh dk ,d ?kaVs dk le; fn;k tk,xk vFkkZr~ ijh{kk lekIr gksus
ls ,d ?kaVk iwoZ ijh{kkFkhZ dks Hkkx–II dk iz'u-i= fn;k tk,xkA
Hkkx–I ds iz'u&i= esa dqy 12 iz'u ,oa Hkkx–II ds iz'u&i= eas dqy 35 iz'u gSaA
Question paper is divided into two Parts : Part–I (Subjective type) and Part–II
(Objective type). Answer the questions of both parts in your answer-book. Part–I
of question paper with answer-book will be provided with starting of
Examination and last one hour of Examination will be given for Part–II i.e.
question paper of Part–II will be provided before one hour of the end of
Examination.
Total questions in question paper of Part–I are 12 and of Part–II are 35.

• Ñi;k tk¡p dj ysa fd Hkkx–I ds bl iz'u-i= esa eqfnzr i`"B 8 rFkk iz'u 12 gSaA
Please make sure that the printed pages in this question paper of Part–I are 8 in
number and it contains 12 questions.

5629/(Set : A)/ I P. T. O.

(2) 5629/(Set : A)
• iz'u-i= esa nkfgus gkFk dh vksj fn;s x;s dksM uEcj rFkk lsV dks Nk= mÙkj-iqfLrdk ds eq[;-i`"B ij fy[ksaA
The Code No. and Set on the right side of the question paper should be written by
the candidate on the front page of the answer-book.

• Ñi;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad vo'; fy[ksaA
Before beginning to answer a question, its Serial Number must be written.

• mÙkj-iqfLrdk ds chp esa [kkyh iUuk / iUus u NksMsa+A
Don’t leave blank page/pages in your answer-book.
• mÙkj-iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr% vko';drkuqlkj gh fy[ksa vkSj fy[kk mÙkj u
dkVsaA
Except answer-book, no extra sheet will be given. Write to the point and do not
strike the written answer.

• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.

• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i= iw.kZ o lgh gS] ijh{kk ds mijkUr bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the questions, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.

lkekU; funsZ'k %
General Instructions :

(i) LkHkh iz'u vfuok;Z gSaA
All questions are compulsory.

(ii) çR;sd ç'u ds vad mlds lkeus n'kkZ;s x, gSaA
Marks of each question are indicated against it.

(iii) ç'u la[;k 1 ls 5 rd vfry?kq mÙkjh; ç'u gSaA çR;sd iz'u 2 vadksa dk gSA izR;sd iz'u dk mÙkj
yxHkx 30 'kCnksa esa nhft,A
5629/(Set : A)/ I

(3) 5629/(Set : A)
Question Numbers 1 to 5 are very short answer type questions of 2 marks
each. Answer these in about 30 words each.

(iv) ç'u la[;k 6 ls 10 rd y?kq mÙkjh; ç'u gSaA çR;sd ç'u 3 vadksa dk gSA izR;sd iz'u dk mÙkj
yxHkx 40 'kCnksa esa nhft,A
Question Numbers 6 to 10 are short answer type questions of 3 marks each.
Answer these in about 40 words each.

(v) ç'u la[;k 11 ,oa 12 nh?kZ mÙkjh; ç'u gSaA çR;sd ç'u 5 vadksa dk gSA izR;sd iz'u dk mÙkj
yxHkx 70 'kCnksa esa nhft,A
Question Numbers 11 & 12 are long answer type questions of 5 marks each.
Answer these in about 70 words each.

(vi) iz'u-i= esa lexz :i ls dksbZ fodYi ugha gSA rFkkfi 5 vadksa okys lHkh nh?kZ mÙkjh; iz'uksa esa
vkarfjd p;u iznku fd;k x;k gSA ,sls iz'uksa esa ls vkidks dsoy ,d gh iz'u djuk gSA
There is no over all choice. However, internal choice is given in all long

answer type questions of 5 marks each. You have to attempt only one of the
given choice in such questions.

[ vfry?kq mÙkjh; iz'u ]

[ Very Short Answer Type Questions ]

1. rÙo B ds ijek.kqvksa ls hcp tkyd curk gS vkSj rÙo A ds ijek.kq 2/3 prq"Qydh; fjfDr;ksa dks
Hkjrs gSaA A vkSj B }kjk cuus okys ;kSfxd dk lw= D;k gS \ 2

Atoms of element B form hcp lattice and those of the element A occupy 2/3 of
tetrahedral voids. What is the compound formed by A and B ?

5629/(Set : A)/ I P. T. O.

(4) 5629/(Set : A)

2. ,d oS|qr vuvi?kV~; ds 1.00 g dks 50 g csUthu esa ?kksyus ij blds fgekad esa 0.40 K dh deh
gks tkrh gSA csUthu dk fgekad voueu fLFkjkad 5.12 K kg mol −1 gSA foys; dk eksyj æO;eku
Kkr dhft,A 2

1.00 g of a non-electrolyte solute dissolved in 50 g of benzene lowered the
freezing point of benzene by 0.40 K. The freezing point depression constant of
benzene is 5.12 K kg mol −1 . Find the molar mass of the solute.

3. ;fn >hy ds ty dk ?kuRo 1.25 g mL−1 gS rFkk mlesa 92 g Na + vk;u çfr fdyks ty esa
mifLFkr gS] rks >hy esa Na + vk;u dh eksyyrk Kkr dhft,A 2

If the density of lake water is 1.25 g mL−1 and contains 92 g of Na + ions per
kg of water. Calculate the molality of Na + ions in lake.

4. çFke dksfV dh vfHkfØ;k ds osx fLFkjkad 200 sec −1 ls v/kkZ;q dh x.kuk dhft,A 2

Calculate the half life of a first order reaction from rate constant 200 sec −1 .

5. xSfcz,y FkSfyekbM la'ys"k.k vfHkfØ;k D;k gS \ 2

What is Gabriel Phthalimide synthesis reaction ?

[ y?kq mÙkjh; ç'u ]
[ Short Answer Type Questions ]

6. ds ,d foy;u dk IySfVue bysDVªksMksa ds chp 5 ,sfEi;j dh /kkjk çokfgr djrs gq,
Ni (NO 3 )2
20 feuV rd fo|qr~ vi?kVu fd;k x;kA Ni dh fdruh ek=k dSFkksM ij fu{ksfir gksxh \ ( Ni 58.7 ) 3

A solution of Ni (NO 3 )2 is electrolysed between Platinum electrodes using a
current of 5 amperes for 20 minutes. What mass of Ni is deposited at the
Cathode ? ( Ni 58.7 )

5629/(Set : A)/ I

(5) 5629/(Set : A)

7. æojkxh ,oa æofojkxh lkWy D;k gksrs gSa \ çR;sd dk ,d-,d mnkgj.k nhft,A 3

What are lyophilic and lyophobic sols ? Give one example of each type.

8. dkj.k nsrs gq, Li"V dhft, ^laØe.k /kkrq,¡ lkekU;r% jaxhu ;kSfxd cukrh gSaA* 3

Explain giving reasons 'transition metals generally form coloured compounds'.

9. D;k gksrk gS tc % 1×3=3

What happens when :

(i) n-C;wfVy DyksjkbM dks ,YdksgkWfyd KOH ds lkFk vfHkÑr fd;k tkrk gS \

n-butyl chloride is treated with alcoholic KOH ?

(ii) 'kq"d bZFkj dh mifLFkfr esa czksekscsUthu dh vfHkfØ;k eSXuhf'k;e ls gksrh gS \

Bromobenzene is treated with Mg in the presence of dry ether ?

(iii) 'kq"d bZFkj dh mifLFkfr esa ,fFky czksekbM dh vfHkfØ;k lksfM;e ls gksrh gS \

Ethylbromide is treated with Na in the presence of dry ether ?

10. ,FksukWy ds vEyh; futZyu ls ,Fkhu çkIr djus dh fØ;kfof/k fyf[k,A 3

Write the mechanism of acid dehydration of ethanol to yield ethene.

[ nh?k
nh?kZ?kZ mÙkjh; ç'u ]
[ Long Answer Type Questions ]

11. (a) Cl 2 dh fojatd fØ;k dk dkj.k crkb,A 1

Give the reason for bleaching action of Cl 2 .

5629/(Set : A)/ I P. T. O.

(6) 5629/(Set : A)

(b) D;k gksrk gS tc SO 2 dks Fe(III) yo.k ds tyh; foy;u esa ls çokfgr djrs gSa \ 2

What happens when SO 2 is passed through an aqueous solution of
Fe(III) salt ?

(c) ukbVªkstu ds vlkekU; O;ogkj dh O;k[;k dhft,A 2

Describe anomalous behaviour of Nitrogen.

vFkok
OR

(a) oxZ 16 ds rÙoksa ds gkbMªkbMksa ds rkih; LFkkf;Ro ds Øe dks fyf[k,A 2

Write the order of thermal stability of hydrides of Group 16 elements.

(b) fuEufyf[kr lehdj.kksa dks iwjk djsa % 1×3=3

(i) PbS + 4O 3 →

(ii) 8NH 3 (excess) + 3Cl 2 →

(iii) Zn + 4HNO 3 ¼lkaæ½ →

Complete the following equations :

(i) PbS + 4O 3 →

(ii) 8NH 3 (excess) + 3Cl 2 →

(iii) Zn + 4HNO 3 (conc.) →

5629/(Set : A)/ I

(7) 5629/(Set : A)

12. (a) 3-gkbMªkWDlhC;wVsuSy dh lajpuk cukb,A 1

Draw structure of 3-Hydroxybutanal.

(b) dSfut+kjks vfHkfØ;k dh O;k[;k dhft,A 2

Describe Cannizzaro reaction.

(c) ØkWl ,sYMksy la?kuu dh O;k[;k dhft,A 2

Describe Cross Aldol Condensation reaction.

vFkok
OR

(a) CH 3COCH 3 fuEu ls vfHkfØ;k djds D;k cukrk gS \ 1×3=3

(i) NH 2OH

(ii) HCN

(iii) NH 2NHCONH 2

CH 3COCH 3 on reacting with the following will give what product ?

(i) NH 2OH

(ii) HCN

(iii) NH 2NHCONH 2

5629/(Set : A)/ I P. T. O.

(8) 5629/(Set : A)
(b) fuEufyf[kr vfHkfØ;kvksa ds mRikn fyf[k, % 1+1=2
CO ,HCl
(i)   →
futZyh; AlCl 3
COCl

H
2 →
(ii) 
Pd − BaSO 4

Write the products of the following reactions :
CO ,HCl
(i)   →
Anhyd . AlCl 3

COCl

H
2 →
(ii) 
Pd − BaSO 4

S

5629/(Set : A)/ I

CLASS : 12th (Sr. Secondary) Code No. 5629
Series : SS-April/2021
Roll No. SET : A
jlk;u foKku
CHEMISTRY
Hkkx – II
PART – II
¼oLrqfu"B iz'u½
(Objective Questions)
ACADEMIC/OPEN
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/Re-appear Candidates)

• Ñi;k tk¡p dj ysa fd Hkkx–II ds bl iz'u-i= esa eqfnzr i`"B 8 rFkk iz'u 35 gSaA
Please make sure that the printed pages in this question paper of Part-II are 8 in
number and it contains 35 questions.
• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.

• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i= iw.kZ o lgh gS] ijh{kk ds mijkUr bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the question, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.

lkekU; funsZ'k %
General Instructions :
(i) lHkh iz'u vfuok;Z gSaA
All questions are compulsory.

5629/(Set : A)/ II P. T. O.

(2) 5629/(Set : A)
(ii) iz'u Øekad 1 ls 35 rd oLrqfu"B iz'u gSaA izR;sd iz'u 1 vad dk gSA funsZ'kkuqlkj bu iz'ukas ds
mÙkj nhft,A
Questions from 1 to 35 are objective type questions. Each question is of 1
mark. Answer of these questions may be given as per instructions.

funsZ'k % fuEufyf[kr cgqfodYih; ç'uksa ds lgh fodYi pqfu, %
Select the correct option of the following multiple choice questions :

1. fcc ;wfuV lsy esa fdrus VsVªkgsMªy okW;M gS % 1

(A) 8 (B) 4

(C) 6 (D) 12
Number of tetrahedral voids in the fcc unit cell is :

(A) 8 (B) 4

(C) 6 (D) 12

2. leijklkjh foy;uksa esa leku gksrk gS % 1

(A) lkaærk (B) ijklj.k nkc
(C) i`"Bh; ruko (D) ';kurk
Isotonic solutions are the solutions having same :
(A) Concentration (B) Osmotic pressure

(C) Surface tension (D) Viscosity

3. Mg | Mg 2 + ||Cu 2 + |Cu lsy vfHkfØ;k ds fy, % 1

(A) dSFkksM ds :i esa Mg (B) dSFkksM ds :i esa Cu
(C) Cu ,d vkWDlhdj.k dkjd gS (D) mijksDr esa ls dksbZ ugha
For the given cell reaction Mg | Mg 2 + ||Cu 2 + |Cu :

(A) Mg as cathode (B) Cu as cathode

(C) Cu is oxidizing agent (D) None of the above

5629/(Set : A)/ II

(3) 5629/(Set : A)
4. fuEufyf[kr osx fLFkjkad ls vfHkfØ;k dksfV Kkr dhft, % 1

K = 2.6 × 10 −4 L mol −1S −1
(A) çFke (B) 'kwU;
(C) f}rh; (D) buesa ls dksbZ ugha
Identify the order of reaction from given rate constant :

K = 2.6 × 10 −4 L mol −1S −1
(A) First (B) Zero
(C) Second (D) None of these

5. dksykbMksa dk dkSu-lk xq.k pktZ ij fuHkZj ugha djrk \ 1
(A) dks,sX;wys'ku
(B) bysDVªks-vkLeksfll
(C) fV.My çHkko
(D) buesa ls dksbZ ugha
Which property of colloids is not dependent on charge on colloidal particles ?
(A) Coagulation
(B) Electro-osmosis
(C) Tyndall effect
(D) None of these

6. fuEu esa ls dkSu-lk lcls çcy vEy gS \ 1

(A) HClO (B) HClO 3

(C) HClO 2 (D) HClO 4
Which of the following is strongest acid ?

(A) HClO (B) HClO 3

(C) HClO 2 (D) HClO 4

5629/(Set : A)/ II P. T. O.

(4) 5629/(Set : A)
7. fuEu esa ls dkSu-lk rÙo vi:irk ugha n'kkZrk gS \ 1

(A) ukbVªkstu (B) fcLeFk
(C) ,fUVeuh (D) vklsZfud
Which of the following element does not show allotropy ?
(A) Nitrogen (B) Bismuth

(C) Antimony (D) Arsenic

8. dkSu-lk rÙo ifjorZuh; vkWDlhdj.k voLFkk,¡ ugha fn[kkrk \ 1

(A) Sc (B) V
(C) Fe (D) Hg

Which element does not show variable oxidation state ?

(A) Sc (B) V
(C) Fe (D) Hg

9. fuEu vkWDlhdj.k voLFkkvksa esa ls ySUFksukW;M esa lcls lkekU; gS % 1
(A) +4 (B) +3
(C) +2 (D) +5
Which of the following oxidation state is most common among the lanthanoids ?
(A) +4 (B) +3
(C) +2 (D) +5

10. ;kSfxd [Co(NH 3 )5 (CO 3 )]Cl esa milgla;kstu D;k gksxh \ 1
(A) 6 (B) 3
(C) 4 (D) 2
What is the co-ordination number in the [Co(NH 3 )5 (CO 3 )]Cl compound ?
(A) 6 (B) 3
(C) 4 (D) 2

5629/(Set : A)/ II

(5) 5629/(Set : A)
11. K [Co(CO )4 ] esa dksckYV dh vkWDlhdj.k la[;k gS % 1
(A) +1 (B) −1
(C) +3 (D) −3
The oxidation number of Cobalt in K [Co(CO )4 ] is :
(A) +1 (B) −1
(C) +3 (D) −3

12. ,d çkFkfed ,Ydkby gsykbM çkFkfedrk ls n'kkZrk gS % 1
(A) SN 2 (B) SN 1

(C) foyksiu (D) buesa ls dksbZ ugha
A primary alkyl halide would prefer to undergo :
(A) SN 2 (B) SN 1

(C) Elimination (D) None of these

13. bZFkj dk vkf.od lw= gS % 1

(A) Cn H 2n +1O (B) Cn H 2n O
(C) Cn H 2n + 2O (D) Cn H 2n − 2O

Molecular formula of ethers is :
(A) Cn H 2n +1O (B) Cn H 2n O
(C) Cn H 2n + 2O (D) Cn H 2n − 2O

14. fuEu esa çcy vEyh; dkSu-lk gS \ 1

(A) CH 3OH (B) CH 3CH 2OH
(C) (CH 3 )2CHOH (D) (CH 3 )3 COH
Which is strongest acid in the following ?
(A) CH 3OH (B) CH 3CH 2OH
(C) (CH 3 )2CHOH (D) (CH 3 )3 COH

5629/(Set : A)/ II P. T. O.

(6) 5629/(Set : A)
15. vk;MksQkWeZ VsLV ugha nsrk gS % 1
(A) ,FksukWy (B) ,FksuSy
(C) 3-isUVsuksu (D) 2-isUVsuksu
Iodoform test is not given by :
(A) Ethanol (B) Ethanal
(C) 3-Pentanone (D) 2-Pentanone

16. gkWQesu czksesekbM vi?kVu vfHkfØ;k cukrk gS % 1

(A) Ar − CONH 2 (B) Ar − NO 2

(C) Ar − NH 2 (D) Ar − OH
Hoffmann Bromamide degradation reaction form :

(A) Ar − CONH 2 (B) Ar − NO 2

(C) Ar − NH 2 (D) Ar − OH

17. fuEu esa ls dkSu-lk {kkjd RNA esa gS vkSj DNA esa ugha \ 1

(A) Fkk;ehu (B) lkbVkslhu
(C) ;wjsfly (D) Xokuhu
Which base is present in RNA but not in DNA ?

(A) Thyamine (B) Cytosine

(C) Uracil (D) Guanine

18. jDr ds FkDds teus ds fy, dkSu-lk foVkfeu ftEesnkj gS \ 1
(A) foVkfeu C (B) foVkfeu D

(C) foVkfeu B1 (D) foVkfeu K
The Vitamin responsible for the coagulation of blood is :
(A) Vitamin C (B) Vitamin D

(C) Vitamin B1 (D) Vitamin K

5629/(Set : A)/ II

(7) 5629/(Set : A)
funsZ'k % fuEufyf[kr ç'uksa ds mÙkj ,d-nks 'kCnksa/okD;ksa esa nhft, %
Answer the following questions in one-two words/sentences :

19. Ýsadsy nks"k D;k gS \ 1

What is Frenkel defect ?

20. rki c<+kus ij xSlksa dh æoksa esa foys;rk de D;ksa gks tkrh gS \ 1

Why gases less soluble in liquids as temperature is raised ?

21. çcy oS|qr~-vi?kV~; D;k gS \ 1

What is strong electrolyte ?

22. lfØ;.k ÅtkZ dks ifjHkkf"kr dhft,A 1

Define activation energy.

23. tc çdk'k fdj.k iqat dksykWbMh lkWy esa ls xeu djrk gS] rks D;k çs{k.k gksxk \ 1

What is observed when a beam of light passed through a colloidal sol ?

24. mHk;narh fyxUM D;k gS \ 1

What are ambidentate ligands ?

25. dkfcZy,sehu vfHkfØ;k D;k gS \ 1

What is Carbylamine Reaction ?

26. ySDVksl ds ty vi?kVu ls fdu mRiknksa ds cuus dh vis{kk djrs gSa \ 1

What are the expected products of hydrolysis of lactose ?

5629/(Set : A)/ II P. T. O.

(8) 5629/(Set : A)
funsZ'k % mi;qDr 'kCnksa ls fjDr LFkkuksa dh iwfrZ djsa %
Fill in the blanks by appropriate words :

27. vk;fud Bksl ------------- voLFkk esa fo|qr~ pkyd gksrs gSaA 1
Ionic solids conduct electricity in ………… state.

28. vfHkfØ;k dk dqy osx vfHkfØ;k ds lcls ean in }kjk fu;af=r gksrk gS] ftls ------------- dgrs gSaA 1
Rate of reaction controlled by slowest step called ………… .

29. lkekU; :i ls laØe.k rÙoksa dk bysDVªkWfud foU;kl ------------- gSA 1

The general electronic configuration of transition element is ………… .

30. [Cu(NH 3 )4 ]SO 4 ladqy ;kSfxd esa ------------- vk;u iSnk gksrs gSaA 1

………… ions produced from complex compound [Cu(NH 3 )4 ]SO 4 .

31. CH 3CH 2Br + NaI → ............ + NaBr . 1

H 2SO 4
32. CH 3CH 2OH   → .......... 1
443 K

33. CH 3 − CH = CHCHO ;kSfxd dk IUPAC uke ------------- gSA 1

………… is the IUPAC name of the compound CH 3 − CH = CHCHO .

34. K 3 [ Al (C 2O 4 )3 ] ladqy ;kSfxd dk IUPAC uke ------------- gSA 1

………… is the IUPAC name of the complex compound K 3 [ Al (C 2O 4 )3 ] .

35. foVkfeu ^lh* dh deh ls gksus okyk jksx ------------- gSA 1

………… is the deficiency disease of Vitamn C.

S
5629/(Set : A)/ II