HBSE Class 12 Chemistry Question Paper 2018 Set C

CLASS : 12th (Sr. Secondary) Code No. 3629
Series : SS-M/2018
Roll No. SET : C
jlk;u foKku
CHEMISTRY
[ Hindi and English Medium ]
ACADEMIC/OPEN
(Only for Fresh/Re-appear Candidates)

Time allowed : 3 hours ] [ Maximum Marks : 60
• d`i;k tk¡p dj ysa fd bl iz'u-i= esa eqfnzr iz'u 18 gSaA
Please make sure that the printed question paper are contains 18
questions.
• 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.
• d`i;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

3629/(Set : C) P. T. O.

(2) 3629/(Set : C)
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; funs
funsZ'k %
(i) LkHkh iz'u vfuok;Z gSaA
(ii) izR;sd iz'u ds vad mlds lkeus n'kkZ, x, gSaA
(iii) ç'u la[;k 1 esa ckjg (i - xii) cgqfodYih; iz'u gSAa izR;sd 1 vad dk gSA ftuds lgh
mÙkj viuh mÙkj&iqfLrdk esa fy[kus gSaA
(iv) ç'u la[;k 2 ls 10 rd vfry?kq mÙkjh; ç'u gSaA çR;sd 2 vadksa dk gSA izR;sd iz'u
dk mÙkj yxHkx 30 'kCnksa esa nhft,A
(v) ç'u la[;k 11 ls 15 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
(vi) ç'u la[;k 16 ls 18 rd 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
(vii) 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
General Instructions :
(i) All questions are compulsory.

(ii) Marks for each question are indicated against it.
(iii) Question Number 1 consists of twelve (i-xii) multiple choice questions
carrying 1 mark each. Candidates have to write the correct answer
in their answer-book.

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(3) 3629/(Set : C)
(iv) Question Numbers 2 to 10 are very short answer type questions of 2
marks each. Answer these in about 30 words each.

(v) Question Numbers 11 to 15 are short answer type questions of 3
marks each. Answer these in about 40 words each.

(vi) Question Numbers 16 to 18 are long answer type questions of 5
marks each. Answer these in about 70 words each.

(vii) 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.

1. (i) N 2 + 3H 2 → 2NH 3 vfHkfØ;k dk osx NH 3 ds lUnHkZ esa D;k gksxk \ 1

d [NH 3 ] d [NH 3 ]2
(A) − (B) −
dt dt

1 d[NH 3 ] 1 d [NH 3 ]
(C) + (D) −
2 dt 2 dt

For a Reaction N 2 + 3H 2 → 2NH 3 the rate of reaction with respect

to NH 3 will be ?

d [NH 3 ] d [NH 3 ]2
(A) − (B) −
dt dt

1 d[NH 3 ] 1 d [NH 3 ]
(C) + (D) −
2 dt 2 dt

(ii) izFke dksfV dh vfHkfØ;k dk v)Zvk;qdky 100 lsd.M gSA bldk osx fLFkjkad gksxk %
1

(A) 6.93 × 10–3 lsd.M

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(4) 3629/(Set : C)
(B) 6.93 × 10–2 lsd.M
(C) .693 lsd.M
(D) 6.93 lsd.M
If Half life period of a first order reaction is 100 Seconds. There
rate constant will be :

(A) 6.93 × 10–3 Second

(B) 6.93 × 10–2 Second

(C) .693 Second

(D) 6.93 Second

(iii) Qyd-dsfUnzr ?kuh; ,dd dksf"Bd esas ijek.kqvksa dh la[;k gksrh gS % 1

(A) 1 (B) 4

(C) 6 (D) 2

The total number of atoms in a face centered cubic unit cell are :

(A) 1 (B) 4

(C) 6 (D) 2
DRY ETHER
(iv) C6H 5Cl + CH 3Cl + 2NO    →
CH3

+ 2NaCl
;g vfHkfØ;k gS % 1

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(5) 3629/(Set : C)
(A) LVhQSu (B) lSUMek;j
(C) fQfVax (D) oqVZt fQfVax vfHkfØ;k fQfVax
DRY ETHER
C6H 5Cl + CH 3Cl + 2NO    →
CH3

+ 2NaCl
This reaction is :
(A) Staphen (B) Sendmeyer's
(C) Fittig (D) Wurtz-Fitting
(v) vfØ"Vyh; Bksl gS % 1

(A) jcM+ (B) IykfLVd
(C) dk¡p (D) lHkh
Amorphous solid is :
(A) Rubber (B) Plastic
(C) Glass (D) All
(vi) VsDyku dk ,dyd gS % 1
(A) CF2 = CF2 (B) CH 2 = CHCN
(C) CH 2 = CH 2 (D) C6H 5CH = CH 2
Monomer of Teflon is :
(A) CF2 = CF2 (B) CH 2 = CHCN
(C) CH 2 = CH 2 (D) C6H 5CH = CH 2
(vii) fuEu esa izcy vEyh; crkb, % 1
(A) CH 3OH (B) CH 3CH 2OH
(C) (CH 3 )2CHOH (D) (CH 3 )3COH
In the following which is strongest acid :
(A) CH 3OH (B) CH 3CH 2OH

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(C) (CH 3 )2CHOH (D) (CH 3 )3COH
(viii) fuEu esa rkin`<+ cgqyd gS % 1

(A) cSdsykbV (B) ikWfyFkhu
(C) ikWyh,LVj (D) C;wuk–N
In the following thermosetting polymer is :

(A) Bakelite (B) Polythene
(C) Polyester (D) Buna-N
(ix) fuEufyf[kr ;kSfxdksa dks muds DoFkukdksa ds c<+rs Øe esa fyf[k, % 1
(A) C 4H 9OH (B) C 4H10
(C) C2H 5OC 2H 5 (D) C3H 7CHO
Arrange the following compounds in order of increasing their
boiling points :
(A) C 4H 9OH (B) C 4H10
(C) C2H 5OC 2H 5 (D) C3H 7CHO
OCH3
(x) ,sfulksy  
 HI ds lkFk 373 K rki ij cukrk gS %
 
1
(A) C 6H 5 I + CH 3OH

(B) C 6H 5OH + CH 3I

(C) C 6H 5CH 2OH + CH 3I

(D) CH 3CH 2I + C 6H 5OH
OCH3
 
Anisole   with Hi at 373 K temperature will give %
 

(A) C 6H 5 I + CH 3OH

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(7) 3629/(Set : C)
(B) C 6H 5OH + CH 3I
(C) C 6H 5CH 2OH + CH 3I
(D) CH 3CH 2I + C 6H 5OH

(xi) C 6H 5CH 2CH 2Cl ;kSfxd dk IUPAC uke fyf[k, % 1

Write IUPAC name of the compound C 6H 5CH 2CH 2Cl .

(xii) fuEu esa izcy vipk;d gS % 1
(A) PH 3 (B) BiH 3
(C) SbH 3 (D) AsH 3
In the following strongest reducing agent is :
(A) PH 3 (B) BiH 3
(C) SbH 3 (D) AsH 3

2. fuEufyf[kr vfHkfØ;k dks iw.kZ dhft, % 2
CH3
Cl /hv H 2O
2 
→ ? → ?
373K

Complete the following reaction :
CH3
Cl /hv H 2O
2  → ? → ?
373K

3. vfHkfØ;k dh v.kqla[;rk o vfHkfØ;k dh dksfV fdls dgrs gSa \ 2

What do you mean by molecularity of a reaction and order of a
reaction ?

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4. 298 K ij 0.20 M KCl foy;u dh pkydrk 0.02485 ohm–1cm–1 gSA foy;u dh
eksyj pkydrk Kkr djsaA 2

At 298 K the conductivity of 0.20 M KCl solution is 0.02485 ohm–1 cm–
1. Calculate the molar conductivity of the solution.

5. Ýsadsy nks"k dks mnkgj.k lfgr le>kb,A 2
Explain Frenkel defect with an example.
6. ,d foy;u esa CH 3OH dk 30 % nzO;eku ikuh esa ?kqyk gqvk gks] rks CH 3OH ds eksy
va'k dh x.kuk dhft,A 2

Calculate the mole fraction of CH 3OH in solution containing 30 % by
mass in water.

7. fuEufyf[kr ds lkFk QhukWy dh vfHkfØ;k ds fy, lehdj.k fyf[k, % 2

(i) czksehu (Br2 ) ty
(ii) ftad
Write the equations for the reaction of Phenol with the following :

(i) Bromine (Br2 ) water

(ii) Zinc

8. fuEu inksa dks ifjHkkf"kr dhft, % 2

(i) eksyyrk
(ii) ijklj.k nkc
Define the following terms :
(i) Molality
(ii) Osmotic pressure

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9. dksyjkm'k ds fu;e dks ,d mnkgj.k lfgr le>kb,A 2

Explain Kohlrausch law with a suitable example.

10. HkkSfrd vf/k'kks"k.k o jklk;fud vf/k'kks"k.k esa nks-nks foHko nhft,A 2

Give two differences between physical adsorption and chemical
adsorption.

11. fuEufyf[kr milgla;kstu ;kSfxdksa ds IUPAC uke fyf[k, % 3

(a) [Pt (H 2O )2BrNO2 ]
(b) [Ni(CO )4 ]
(c) K 3[Al (C 2O 4 )3 ]

Write IUPAC names of the following coordinate compounds :

(a) [Pt (H 2O )2BrNO2 ]
(b) [Ni(CO )4 ]
(c) K 3[Al (C 2O 4 )3 ]

12. izfr vEy vkS"k/k fdls dgrs gSa \ fdUgha nks Js"B izfr vEYkksa dk mnkgj.k nhft,A 3
What are antacids ? Give two examples of good antacids.

13. D;k gksrk gS tc Xywdksl fuEufyf[kr ds lkFk vfHkfØ;k djrk gS \ 3

(i) HI, rki

(ii) NH 2OH

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(iii) Br2 ty

What happens when Glucose reacts with the following :
(i) HI, Heat
(ii) NH 2OH

(iii) Br2 Water

14. izR;sd ds fy, ,d mnkgj.k nsdj fuEu vfHkfØ;kvksa dk o.kZu dhft, % 3

(a) gkWQeku czkseSekbM vfHkfØ;k
(b) ;qXeu vfHkfØ;k
Giving an example for each describe the following reactions :

(a) Hofmann's Bromamide Reaction

(b) A coupling reaction

15. okWu-vkjdsy-'kks/ku ds fof/k dh O;k[;k dhft,A 3

Explain the Van-Arkel-Method for refining of metals.

16. fuEu dk o.kZu dhft, %

(a) ,sYMksy la?kuu 21
2

(b) dSfutkjks vfHkfØ;k 21
2

Describe the following :
(a) Aldol condensation
(b) Cannizzaro reaction

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( 11 ) 3629/(Set : C)
vFkok
OR
COOH COOH

(a) o vEyksa esa dkSu izcy vEy gS]
Cl NO2
vkSj D;ksa \ 3

(b) CH 3COCH 3 fuEu ls vfHkfØ;k djds D;k cukrk gS \
2

(i) NH 2OH

(ii) HCN

CH 2OH
(iii) |
CH 2OH

COOH COOH

(a) and which acid is strongest acid,

Cl NO2

and why ?

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

Explain.

(i) NH 2OH

(ii) HCN

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CH 2OH
(iii) |
CH 2OH

17. (a) mRÑ"V xSlksa ds rhu egÙoiw.kZ mi;ksx fyf[k,A 3

(b) XeO 3 o XeF2 v.kqvksa dh lajpuk,¡ cukb,A 2

(a) Write three important uses of Noble gases.
(b) Draw structures of XeO 3 and XeF2 molecules.

vFkok
OR

(a) bUVjgSykstu ;kSfxd D;k gS \ mnkgj.k nhft,A 3

(b) bUVjgSykstu ;kSfxd] gSykstu ls T;knk fØ;k'khy gS] D;ksa \
2

(a) What are interhalogen compounds ? Give example.
(b) Why are interhalogens compounds more reactive then halogens ?

18. ySUFksuk;M vkdqapu ls vki D;k le>rs gSa \ blds dkj.k o ifj.kkeksa dk o.kZu dhft,A 5

What is Lanthanide contraction ? Explain its reasons and
consequences.

vFkok
OR

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(a) fuEufyf[kr jklk;fud vfHkfØ;k lehdj.kksa dks iw.kZ dhft, % 3

(i) Cr2O72− (aq ) + Fe 2+ + H + →

(ii) Cr2O 72− (aq ) + I − + H + →
−
(iii) MnO 4 (aq ) + Fe 2+ + H + →

(b) laØe.k /kkrq,¡ o muds ;kSfxd vuqpqacdh; gSA Li"V dhft,A 2

(a) Complete the following reactions :

(i) Cr2O72− (aq ) + Fe 2+ + H + →

(ii) Cr2O 72− (aq ) + I − + H + →
−
(iii) MnO 4 (aq ) + Fe 2+ + H + →
(b) Transition metals and their compounds show paramagnetic
behaviour. Explain.

S

3629/(Set : C) P. T. O.