HBSE Class 12 Chemistry Question Paper 2017 Set D

CLASS : 12th (Sr. Secondary) Code No. 2029
Series : SS-M/2017
Roll No. SET : D
jlk;u foKku
CHEMISTRY
[ Hindi and English Medium ]
ACADEMIC/OPEN
(Only for Fresh Candidates)
(Evening Session)

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.

2029/ (Set : D) P. T. O.

(2) 2029/ (Set : D)
• 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 %
(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.

2029/ (Set : D)

(3) 2029/ (Set : D)
(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.

(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) fdldh mifLFkfr ds dkj.k xzsQkbV fo|qr~ dk vPNk pkyd gS \ 1

(A) bysDVªkWu ds yksu is;j
(B) Ýh osysUl bysDVªkWu
(C) dSVk;u
(D) ,uk;u
Graphite is a good conductor of electricity due to the presence of :
(A) Lone pair of electron
(B) Free valence electron
(C) Cations
(D) Anions

2029/ (Set : D) P. T. O.

(4) 2029/ (Set : D)
(ii) 900 xzke, ty dh eksyjrk gS % 1

(A) 50 M (B) 55.5 M

(C) 5M (D) buesa ls dksbZ ugha
Molarity of 900 gm of water is :

(A) 50 M (B) 55.5 M

(C) 5M (D) None of these

(iii) usu~ZLV lehdj.k n'kkZbZ tkrh gS % 1

(A) ∆G 0 = −nE 0F

(B) ∆G = −nRT ln K

0.0591 [M ]
(C) E cell = E 0cell − log
n [M n + ]

(D) mijksDr esa ls dksbZ ughas
Nernst equation is shown by expression :

(A) ∆G 0 = −nE 0F

(B) ∆G = −nRT ln K

0.0591 [M ]
(C) E cell = E 0cell − log
n [M n + ]

(D) None of the above

(iv) Mg /Mg 2 + ||Cu 2 + /Cu lsy vfHkfØ;k ds fy, % 1

2029/ (Set : D)

(5) 2029/ (Set : D)
(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

(v) ,fDVosVM dkWEIysDl ds MhdEiksft'ku ds nkSjku % 1

(A) ÅtkZ lnSo eqDr gksrh gS
(B) ÅtkZ lnSo vo'kksf"kr gksrh gS
(C) ÅtkZ ifjofrZr ugha gksrh gS
(D) mijksDr esa ls dksbZ ugha
During decomposition of an activated complex :

(A) Energy is always released

(B) Energy is always absorbed

2029/ (Set : D) P. T. O.

(6) 2029/ (Set : D)
(C) Energy does not change

(D) None of the above

(vi) fuEu esa fdldk xksYM uacj de gS \ 1

(A) ftysfVu (B) LVkpZ
(C) xe ,sjsfcd (D) lksfM;e vksfy,V

Which one of the following has minimum gold number ?

(A) Gelatin (B) Starch

(C) Gum arabic (D) Sodium oleate

(vii) fuEu fdl [kfut esa Al ugha gksrk \ 1

(A) Øk;ksykbV (B) ekbdk
(C) QsYMLij (D) ¶yksjLij
In which of the following minerals Al is not present ?

(A) Cryolite (B) Mica

(C) Fledspar (D) Fluorspar

(viii) ,sflfVd vEy dk IUPAC uke gS % 1

(A) feFksuy (B) 2-isUVkukWu

(C) bFksuksbd vEy (D) feFksuksbd vEy

2029/ (Set : D)

(7) 2029/ (Set : D)
IUPAC name of Acetic acid is :

(A) Methanal (B) 2- Pentanone

(C) Ethanoic acid (D) Methanoic acid

(ix) fdl esVy&dkcksZfuy esa C–O cU/k etcwr gS \ 1

(A) Mn (CO )6+ (B) Cr (CO )6

(C) V (CO )6 (D) Fe (CO )5

Which metal carbonyl has the strongest C–O bond ?

(A) Mn (CO )6+ (B) Cr (CO )6

(C) V (CO )6 (D) Fe (CO )5

(x) fuEu esa dkSu vf/kd vEyh; gS \ 1

(A) csfUty ,sYdksgy (B) lkbDyksgsDlsukWy

(C) QhukWy (D) m-DyksjksQhukWy

Which of the following is most acidic ?

(A) Benzyl alcohol (B) Cyclohexanol

(C) Phenol (D) m-chlorophenol

(xi) ,d izcy {kkj α-gkbMªkstu dks i`Fkd dj ldrk gS % 1

(A) dhVksu ls (B) ,sYdsu ls
(C) ,sYdhu ls (D) ,sehu ls

2029/ (Set : D) P. T. O.

(8) 2029/ (Set : D)
A strong base can abstract an α-hydrogen from :

(A) Ketone (B) Alkane

(C) Alkene (D) Amine

(xii) fuEu esa dkSu tkuojksa ds ;Ñr esa bdëk gksrk gS \ 1

(A) ,ekbyksl (B) lsywykst
(C) ,ekbyksisfDVu (D) Xykbdkstu

Which of the following is stored in liver of animals ?

(A) Amylose (B) Cellulose

(C) Amylopectin (D) Glycogen

2. fdlh foy;u dh pkydrk ruqrk ds lkFk D;ksa ?kVrh gS \ 2

Why does the conductivity of a solution decrease with dilution ?

3. nzofojkxh lkWy D;k gksrs gSa \ ,d mnkgj.k nhft,A 2

What are lyophobic colloids ? Give one example.

4. fuLrkiu ij laf{kIr fVIi.kh fyf[k,A 2

Write short note on calcinations.

5. fuEu ds IUPAC uke fyf[k, % 2

(i) [Co(NH 3 )6 ]Cl 3
(ii) K 3 [Fe (C 2O 4 )3 ]

2029/ (Set : D)

(9) 2029/ (Set : D)
Write IUPAC names of following :
(i) [Co(NH 3 )6 ]Cl 3

(ii) K 3 [Fe (C 2O 4 )3 ]

6. fMgkbMªksgsyksthus'ku vfHkfØ;k D;k gS \ 2

What is dehydrohalogenation reaction ?

7. gsykstu esa C-X cU/k dh izÑfr dh O;k[;k dhft,A 2

Discuss the nature of C-X bond in halogens.

8. ;ksxkRed&ikWfyesjkbts'ku in dh mnkgj.k lfgr O;k[;k dhft,A 2
Explain the term addition-polymerization with an example.

9. foVkfeu A rFkk C D;ksa vko';d gSa \ izR;sd dk ,d egÙoiw.kZ lkslZ crkb,A 2

Why vitamin A and C are essential to us ? Name one important source
of each.

10. ,UVhvkWDlhMsUV D;k gS \ ,d mnkgj.k nhft,A 2

What are antioxidants ? Give one example.

11. fcUnq nks"k D;k gS \ 'kkV~dh nks"k dh O;k[;k dhft,A 3

What is point defect ? Discuss Schottky defect.

2029/ (Set : D) P. T. O.

( 10 ) 2029/ (Set : D)
12. ijklj.k nkc D;k gS \ n'kkZb, fd ;g ,d v.kqla[; xq.k/keZ gSA
3

What is osmotic pressure ? Show that it is a colligative property.

13. ,d izFke dksfV dh vfHkfØ;k dk osx fLFkjkad 1.15 × 10 −3 s −1 gSA bl vfHkfØ;k esa
vfHkdkjd dh 5 xzke ek=k dks ?kVdj 3 xzke gksus esa fdruk le; yxsxk \ 3

A 1st order reaction has k = 1.15 × 10 −3 s −1 . How long will 5 gm of this
reactant take to reduce to 3 gm ?

14. izFke] f}rh; rFkk r`rh; ,sYdksgy D;k gSa \ izR;sd dk ,d mnkgj.k nhft,A 3

What are primary, secondary and tertiary alcohols ?

15. ukbVªks xzqi ds m-MkbjsfDVax rFkk fM,fDVosfVax izÑfr dks foosfpr dhft,A 3
Discuss the deactivating and m-directing nature of nitro group.

16. (a) HNO 3 dh lajpuk cukb, rFkk blds nks mi;ksx fyf[k,A 3

Draw the structure of HNO 3 and write its two uses.

(b) HF, HI dh vis{kk de vEyh; D;ksa gS \ O;k[;k dhft,A 2

HF is a weaker acid than HI. Explain.

vFkok

2029/ (Set : D)

( 11 ) 2029/ (Set : D)
OR

(a) XeF4 dh lajpuk dh O;k[;k dhft,A 3

Discuss the shape and structure of XeF4 .

(b) buVZ is;j bQsDV D;k gS \ 2

What is inert pair effect ?

17. (a) fuEu dk bysDVªkWfud foU;kl fyf[k, % 3

(i) Co 2 + (27) (ii) Ce 4 + (58) (iii) Lu 2 + (71)

Write the electronic configuration of :

(i) Co 2 + (27) (ii) Ce 4 + (58) (iii) Lu 2 + (71)

(b) Li"V dhft, fd Cu + vk;u tyh; foy;u esa LFkkbZ ugha gS] D;ksa \
2

Explain why Cu + ion is not stable in aqueous solution.

vFkok
OR

(a) Cr2O 72 − dh lajpuk fyf[k,A K 2Cr2O 7 ds nks mi;ksx nhft,A 3

Write the structure of Cr2O 72 − . Give two uses of K 2Cr2O 7 .

2029/ (Set : D) P. T. O.

( 12 ) 2029/ (Set : D)
(b) vUrjkdk'kh ;kSfxd ij fVIi.kh fyf[k,A 2

Write note on interstitial compounds.

18. (a) vki dSls cnysaxs % 3

(i) CH 3COOH → CH 3 − CH 3

(ii) CH 3COOH → CH 3 − CH 2 − OH

(iii) C 6 H 5COOH → C 6 H 5 − Br − COOH

How will you convert ?

(i) CH 3COOH → CH 3 − CH 3

(ii) CH 3COOH → CH 3 − CH 2 − OH

(iii) C 6 H 5COOH → C 6 H 5 − Br − COOH

(b) fMdkcksZDlhys'ku D;k gS \ mnkgj.k lfgr le>kb,A 2

What is decarboxylation ? Explain with an example.

vFkok
OR

(a) fuEu vfHkfØ;kvksa dks iw.kZ dhft, % 3

dil . H SO
(i) CH ≡ CH + H 2O   2 
4
 → ?
HgSO 4 , 333 K

2029/ (Set : D)

( 13 ) 2029/ (Set : D)
(ii) CH 3CHO + HCN → ?

(iii) HCHO + NaOH → ?

Complete the following reactions :

dil . H SO
(i) CH ≡ CH + H 2O   2 
4
 → ?
HgSO 4 , 333 K

(ii) CH 3CHO + HCN → ?

(iii) HCHO + NaOH → ?

(b) fuEu ls R-COOH vki dSls rS;kj djsaxs \ 2

(i) ,Ydksgy

(ii) ukbVªkby
How will you prepare R-COOH from ?

(i) Alcohol

(ii) Nitrile

S
2029/ (Set : D) P. T. O.