HBSE Class 12 Chemistry Question Paper 2018 Set D

CLASS : 12th (Sr. Secondary) Code No. 3629
Series : SS-M/2018
Roll No. SET : D
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 : D) P. T. O.

(2) 3629/(Set : D)
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.

3629/(Set : D)

(3) 3629/(Set : D)
(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) izFke dksfV dh vfHkfØ;k dh v)Zvk;q fuHkZj djrh gS % 1

(A) vfHkdkjdksa dh lkUnzrk ij
(B) mRiknksa dh lkUnzrk ij
(C) vfHkfØ;k osx fLFkjkad ij
(D) dksbZ Hkh ugha
Halflife period of a first order reaction depends upon :

(A) Concentration of reactants

(B) Concentration of products

(C) Rate constant of reaction

(D) None of these

(ii) fuEu esa ls dkSu-lk lcls izcy vEy gS \ 1

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(4) 3629/(Set : D)
(A) HClO (B) HClO 3

(C) HClO 4 (D) HClO 2

In the following strongest acid is :

(A) HClO (B) HClO 3

(C) HClO 4 (D) HClO 2

(iii) fuEufyf[kr esa ls dkSu jaxhu gS \ 1

(A) Cu2Cl 2 (B) [Sc (H 2O )6 ] 3+
(C) [Zn (H 2O )6 ]2+ (D) [Ti (H 2O )6 ]3+
Which one is coloured ?

(A) Cu2Cl 2 (B) [Sc (H 2O )6 ] 3+
(C) [Zn (H 2O )6 ]2+ (D) [Ti (H 2O )6 ]3+

(iv) leijklkjh foy;uksa esa leku gksrk gS % 1

(A) lkanzrk (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

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(5) 3629/(Set : D)
(v) izFke dksfV dh vfHkfØ;k ds osx fLFkjkad dh bdkbZ gS % 1

(A) le; −1 (B) lkUnzrk −1 le; −1

(C) lkUnzrk 2 le; −2 (D) dksbZ Hkh ugha
The units of rate constant for first order reaction is :

(A) Time −1
(B) Concentration −1 Time −1
(C) Concentration2 Time–2
(D) None of these

(vi) 'kq) ty dh eksyyrk gS % 1

(A) 20 (B) 18
(C) 10 (D) 55.5
The molality of pure water is :
(A) 20 (B) 18
(C) 10 (D) 55.5
Cl

(vii)

SO3H ;kSfxd dk IUPAC uke fyf[k,A 1

Cl
Write IUPAC name of Compound.

SO3H

CHCl2

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(6) 3629/(Set : D)
H 2O
(viii) vfHkfØ;k esa → P , mRikn P gS % 1
373 K

CHO
CH3
(A) (B)
CHCl2
CH2OH
(C) (D) OH

H 2O
In the following reaction, product P is
CHCl → P:
2 373 K

CHO
CH3
(A) (B)

CHCl2
CH2OH
(C) (D) OH

(ix) [Co (NH 3 )4Cl2 ]NO2 o [Co (NH 3 )4ClNO2 ]Cl dkSu- ls leko;oh gS \
1

(A) vk;uu (B) c/kuh
(C) izdkf'kd (D) T;kfefr

Which type of Isomerism present in [Co (NH 3 )4Cl2 ]NO2 and

[Co (NH 3 )4ClNO2 ]Cl :
(A) Ionic (B) Linkage

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(7) 3629/(Set : D)
(C) Optical (D) Geometrical

(x) vfHkfØ;k dks iwjk dhft, % 1

373K
C 2H 5OC 2H 5 + 2HI  
→

Completes the reaction :

373K
C 2H 5OC 2H 5 + 2HI  
→

(xi) fuEufyf[kr ;kSfxdksa dks muds vEy lkeF;Z ds c<+rs Øe esa fyf[k, %
1
(A) CH 3OH (B) C 2H 5OH

(C) QhukWy (D) p - ukbVªksQhukWy

Arrange the following in order of increasing their Acidic strength :
(A) CH 3OH (B) C 2H 5OH

(C) Phenol (D) p - Nitrophenol

(xii) fuEufyf[kr esa ls fdl ldqay vk;u ds /kkrq dh vkWDlhdj.k voLFkk 'kwU; gS \
1

(A) [Cr (H 2O )6 ] 3+ (B) [CuCl 4 ]2−

(C) [Fe (CO )5 ] (D) [Fe (CN )6 ]3−

In the following in which metal of complex ion has zero oxidation
number ?

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

(8) 3629/(Set : D)
(A) [Cr (H 2O )6 ] 3+
(B) [CuCl 4 ] 2−

(C) [Fe (CO )5 ] (D) [Fe (CN )6 ]3−

2. izfrtSfod fdls dgrs gSa \ nks mnkgj.k nhft,A 2

What is meant by the term antibiotics ? Give two examples.

3. X vkSj Y feydj cus ;kSfxd ds fØLVy dh ?kuh; lajpuk esa X ?ku ds dksuksa ij o Y lHkh

Qydksa ds dsUnz ij mifLFkr gSA ;kSfxd dk lw= Kkr dhft,A 2

A cubic unit cell made up of X and Y elements. If X present on the
corners of the cube and Y are present on centers of faces, of cube then
find formula of the compound.

4. v/kZpkyd D;k gksrs gSa \ bUgsa fdl izdkj oxhZÑr fd;k tkrk gS \ 2

What are semiconductors ? How are they classified ?

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

(i) okUV gkWQ xq.kkad
(ii) eksyjrk
Define the following terms :
(i) Van't Hoff factor
(ii) Molarity

6. lfØ;.k ÅtkZ dk egÙo le>kb,A 2

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(9) 3629/(Set : D)
Explain the importance of Activation Energy.

7. ukbykWu 6, 6 o ukbykWu - 6 cgqydksa esa foHksn le>kb,A 2

Explain the difference between polymer nylon 6,6 and nylon 6.

8. b±/ku lsy fdls dgrs gS \ ,d mi;ksx fyf[k,A 2

Define fuel cell ? Give one use.

9. fuEu lsy dk E o MF Kkr dhft, % 2

Cu |Cu 2+ Ag + | Ag

;fn E o Cu 2+ Cu = +0.34V
E o Ag / Ag + = −.80 V gSA

Calculate E o MF of the following cell :

Cu |Cu 2+ Ag + | Ag

Given is E o Cu 2+ Cu = +0.34V

E o Ag / Ag + = −.80 V

10. ,FkkWDlh,Fksu ty esa ?kqyu'khy gSA le>kb,A 2

How do you account for the miscibility of Ethoxy ethane in water ?

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

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11. α -Xywdksl vkSj β -Xywdksl esa fo'ks"kr% D;k varj gS \ Xywdksl dh ik;jSuksl lajpuk ls D;k

rkRi;Z gS \ 3

What is essentially the difference between α - glucose and β -glucose ?
What is meant by pyronose structure of glucose ?

12. izfrLFkkiu vfHkfØ;kvksa dh SN 1 vkSj SN 2 fØ;kfof/k;ksa ds chp vki dSls varj djsaxsa \
izR;sd izdkj dk ,d-,d mnkgj.k nhft,A 3

How would you differentiates between S 1 and SN 2 Mechanisms of
N

substitutions reactions ? Give one example of each.

13. fVUMy izHkko dh foospuk dhft,A 3

Discuss the Tyndall effect.

14. fuEu dks Li"V dhft, % 3

(i) ,yqehuk ds oS|qr vi?kVu esa Øk;ksykbV dk dk;Z
(ii) fudy /kkrq ds ifj"dj.k esa CO (dkcZu eksuksvkWDlkbM) dk dk;Z
Explain the role of :

(i) Cryolite in the electrolytic reduction of alumina

(ii) Carbon monoxide in the purification of nickel.

15. fuEufyf[kr vfHkfØ;kvksa ds fy, jklk;fud lehdj.k nsdj fyf[k,A 3

(i) xkVjeku vfHkfØ;k

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( 11 ) 3629/(Set : D)
(ii) dkfcZy,sehu vfHkfØ;k
(iii) veksuhvi?kVu
Give chemical equations for the following reactions :
(i) Gatterman Reaction
(ii) Carbylamine reaction
(iii) Ammonolysis

16. fuEufyf[kr dh O;k[;k dhft, %
(a) NH 3 dh vis{kk BiH 3 ,d izcy vipk;d gSA 3

(b) mRÑ"V xSls vf/kdrj vfØ; gSa] D;ksa \ 2

Explain the following :
(a) BiH 3 is a stronger reducing agent as compare of NH 3 .

(b) Noble gases are mostly inert, why ?

vFkok
OR
(a) vkWDlhtu ds vlkekU; xq.kksa dh O;k[;k dhft,A 3

(b) PH 3 dh DoFkukad NH 3 ls de gS] Li"V dhft,A 2

(a) Explain the Anamalous properties of Oxygen.

(b) PH 3 has lower boiling point than NH 3 , Explain.

17. (a) vEyh; K 2Cr2O7 fuEu ls vfHkfØ;k djsxk rks D;k gksxk \ 3

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( 12 ) 3629/(Set : D)
(i) H 2S

(ii) KI
(iii) FeSO 4

(b) laØe.k /kkrq,¡ varjkdk'kh ;kSfxd cukrh gS] Li"V dhft,A 2

(a) What happens when acidified K 2Cr2O 7 is reacted with ?

(i) H 2S

(ii) KI
(iii) FeSO 4
(b) Transition Metals are form Interstitial compounds Explain.
vFkok
OR
ik¡¡p mi;ksxksa dh foospuk dhft,A
d-,oa f-Cykd rÙoksa ds ik 5

Discuss five uses of d and f-block elements.

18. (a) fuEufyf[kr vEyksa dks vEyrk dh rqyuk dhft,A 3

(i) CH 3COOH

(ii) HCOOH
(iii) C 6H 5COOH

(b) fuEu vfHkfØ;kvksa ds eq[; mRikn fyf[k, % 2

CO , HCl
(i) →
Anhyd . AlCl 3
COCl

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( 13 ) 3629/(Set : D)
H2
(ii) →
Pd − BaSO 4

(a) Compare the acidic strength of following acids :
(i) CH 3COOH
(ii) HCOOH
(iii) C 6H 5COOH
(b) Write the major products in the following reactions :
CO , HCl
(i) →
Anhyd . AlCl 3
COCl
H2
(ii) →
Pd − BaSO 4

vFkok
OR

fuEu dk o.kZu dhft, % 11 +2+11
2 2
(i) oksYQ-fd'uj vip;u
(ii) Økl ,sYMksy la?kuu
(iii) LVhQsu vfHkfØ;k
Describe the following :
(i) Wolff-Kishner reduction
(ii) Cross Aldol condensation
(iii) Stephen reaction

S
3629/(Set : D) P. T. O.