HBSE Class 12 Chemistry Question Paper 2017 Set C

CLASS : 12th (Sr. Secondary) Code No. 2029
Series : SS-M/2017
Roll No. SET : C
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.
• ijh{kkFkhZ viuk jksy ua0 iz'u-i= ij vo'; fy[ksaA

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

(2) 2029/ (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;
lk ekU; 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.

2029/ (Set : C)

(3) 2029/ (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) DoFkukad mUu;u fLFkjkad dh bdkbZ gS % 1

(A) K kg mol −1

(B) mol kg K −1

(C) K mol kg −1

(D) mijksDr esa ls dksbZ ugha

The unit of ebullioscopic constant is :

s(A) K kg mol −1

(B) mol kg K −1

(C) K mol kg −1
(D) None of the above

(ii) Al 2O 3 ls 1 eksy Al izkIr djus esa fdruh ek=k pktZ pkfg, \ 1

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

(4) 2029/ (Set : C)
(A) 1F (B) 6F

(C) 3F (D) 2F

The quantity of charge required to obtain 1 mol of Al from
Al 2O 3 :

(A) 1F (B) 6F

(C) 3F (D) 2F

(iii) fuEu esa dkSu&lk dFku lR; gS \ 1

(A) ruq NaOH ds oS|qrvi?kVu ls dSFkksM ij H 2 rFkk ,suksM ij O 2 A

(B) H 2SO 4 ds oS|qrvi?kVu ls dSFkksM ij H 2 rFkk ,suksM ij O 2 A

(C) tyh; KF ds oS|qrvi?kVu ls dSFkksM ij F2 A

(D) mijksDr esa ls dksbZ ugha

Which of following statement is correct ?

(A) Electrolysis of dil NaOH gives H2 at cathode & O2 at anode.

(B) Electrolysis of H 2SO 4 gives H2 at cathode & O2 at anode.

(C) Electrolysis of aq KF solution gives F2 at cathode.

(D) None of the above

(iv) vkjsfu;l lehdj.k n'kkZbZ tkrh gS % 1

2029/ (Set : C)

(5) 2029/ (Set : C)
Ea / RT
(A) K = Ae

(B) K = Ae −Ea / RT

(C) t½ = 0.693 /K

(D) mijksDr esa ls dksbZ ugha
Arrhenius equation is represented by :

(A) K = Ae Ea / RT

(B) K = Ae −Ea / RT

(C) t½ = 0.693 /K

(D) None of the above

(v) dksykbMksa dk dkSu&lk xq.k pktZ ij fuHkZj ugha djrk \ 1

(A) dks,sX;wys'ku (B) bysDVªksvkleksfll
(C) fV.My izHkko (D) buesa ls dksbZ ugha
Which property of colloids is not dependent on the charge on
colloidal particles ?

(A) Coagulation (B) Electro-osmosis

(C) Tyndal effect (D) None of these

(vi) ukbVªkstu dh vf/kdre la;kstdrk gS % 1

(A) 3 (B) 5

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

(6) 2029/ (Set : C)
(C) 4 (D) 6

Maximum covalency of Nitrogen is :

(A) 3 (B) 5

(C) 4 (D) 6

(vii) dkWij lYQsV vf/kd ek=k esa KCN esa ?kqydj cukrk gS %
1

(A) [Cu(CN )4 ]3 − (B) [Cu(CN )4 ] 2 −

(C) CuCN (D) [Cu(CN )2 ]

Copper sulphate dissolves in excess of KCN to give :

(A) [Cu(CN )4 ]3 − (B) [Cu(CN )4 ] 2 −

(C) CuCN (D) [Cu(CN )2 ]

(viii) ,Ydksgy dh fdlds lkFk fØ;k djds ,Ydkby gsykbM curs gSa \ 1

(A) HCl + ZnCl 2

(B) H 2SO 4 + KI

(C) NaCl + H 2SO 4

(D) mijksDr esa ls dksbZ ugha

Alkyl halides are prepared from alcohol by treating with :

(A) HCl + ZnCl 2

2029/ (Set : C)

(7) 2029/ (Set : C)
(B) H 2SO 4 + KI

(C) NaCl + H 2SO 4

(D) None of the above

(ix) dkcZfud ;kSfxd tks SN 2 fØ;k esa iw.kZ LVhfj;ksdsfedy bUolZu n'kkZrk gS %
1
(A) CH 3Cl

(B) (CH 3 )2CH − Cl
(C) (CH 3 )3 C − Cl
(D) mijksDr esa ls dksbZ ugha
Organic compound which shows complete stereochemical

inversion during SN 2 reaction :
(A) CH 3Cl

(B) (CH 3 )2CH − Cl
(C) (CH 3 )3 C − Cl
(D) None of the above

(x) bZFkj dk vkf.od lw= gS % 1

(A) Cn H 2n +1O (B) Cn H 2n O

(C) Cn H 2n + 2O (D) mijksDr esa ls dksbZ ugha
Molecular formula of Ethers is :
(A) Cn H 2n +1O (B) Cn H 2n O

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

(8) 2029/ (Set : C)
(C) Cn H 2n + 2O (D) None of these

(xi) gkWQesu czksesekbM vi?kVu vfHkfØ;k esa gksrk gS % 1

(A) Ar − NH 2 (B) Ar − CONH 2

(C) Ar − NO 2 (D) buesa ls dksbZ ugha

Hoffman Bromamide degradation reaction involve :

(A) Ar − NH 2 (B) Ar − CONH 2

(C) Ar − NO 2 (D) None of these

(xii) vk;MksQkWeZ VsLV ugha nsrk gS % 1

(A) 2-isUVsuksu (B) 3-isUVsuksu

(C) ,FksukWy (D) ,FksuSy

Iodoform test is not given by :

(A) 2-Pentanone (B) 3-Pentanone

(C) Ethanol (D) Ethanal

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

What is paramagnetism ? Give one example.

3. ,d FCC fØLVy esa d.kksa dh la[;k dh x.kuk dhft,A 2

2029/ (Set : C)

(9) 2029/ (Set : C)
Calculate number of particles per unit cell in a FCC crystal.

4. esVSfyd rFkk bysDVªksfyfVd pkyd esa nks vUrj nhft,A 2

Give two differences between metallic and electrolytic conductors.

5. /kukRed rFkk _.kkRed mRizsjdrk dh ifjHkk"kk nhft,A 2

Define positive and negative catalysis .

6. /kzqo.k leko;ork D;k gS \ ,d mnkgj.k lfgr O;k[;k dhft,A 2

What is optical isomerism ? Explain with one example.

7. oqV~tZ vfHkfØ;k D;k gS \ 2

What is Wurtz reaction ?

8. VkWywbZu dk ukbVªs'ku csUthu dh vis{kk vklkuh ls gksrk gSA O;k[;k dhft,A 2

Toluene is more easily nitrated than benzene. Explain.

9. ck;ksfMxzsMscy cgqyd D;k gS \ ,d mnkgj.k nhft,A 2

What is biodegradable polymer ? Give one example.

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

( 10 ) 2029/ (Set : C)
10. iwfrjks/kh rFkk folaØkeh dks ifjHkkf"kr dhft,A 2

Define antiseptics and disinfectants.

11. DoFkukad ds mUu;u dh la{ksi esa O;k[;k dhft,A 3

Briefly discuss elevation in boiling point.

12. izFke dksfV vfHkfØ;k ds fy, lekdfyr lehdj.k dh O;qRifÙk dhft,A 3

Derive the integrated rate equation for first order reaction.

13. v;Ldksa dk izlk/ku D;k gS \ Qsu Iyou fof/k dh O;k[;k dhft,A 3
What is benefaction of the Ores ? Explain froth floatation process.

14. fjej&fVeku vfHkfØ;k D;k gS \ 3

What is Reimer-Tiemann reaction ?

15. izksVhu ds fMuspqj's ku ij laf{kIr fVIi.kh fyf[k,A 3

Write short note on denaturation of proteins.

16. ,fDVukW;M rFkk ySUFksukW;M Js.kh ds rRoksa dh] fuEu ds lanHkZ esa jlk;u dh rqyuk dhft, % 5
Compare the chemistry of actinoids with that of lanthanoids with
special reference to :

2029/ (Set : C)

( 11 ) 2029/ (Set : C)
(i) ijek.oh; vkdkj
Atomic sizes

(ii) jklk;fud vfHkfØ;k'khyrk
Chemical reactivity

vFkok
OR

fuEu ds fy, vki x.kuk dSls djsaxs \
How would you account for the following ?

(i) laØe.k /kkrq,¡ vPNh mRizsjd gSaA 3

Transition metals acts as good catalysts.

(ii) laØe.k /kkrq,¡ jaxhu ;kSfxd cukrh gSaA 2

Transition metal forms coloured compounds.

17. (a) PH 3 dk DoFkukad NH 3 dh vis{kk de gksrk gSA D;ksa \

3

PH3 has lower boiling point than NH3, explain why ?

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

( 12 ) 2029/ (Set : C)
(b) PCl 3 ueh esa /kwe D;ksa nsrk gS \ 2

Why does PCl 3 fumes in moisture ?

vFkok
OR

(a) H 2O ,d nzo rFkk H 2S xSl D;ksa gS \ 3

Why is H 2O a liquid and H 2S a gas ?

(b) Cl 2 ds fojatd fØ;k dh O;k[;k dhft,A 2

Explain the bleaching action of Cl 2 .

18. (a) fuEu dh dkcksZfuy xzqi ds lkFk jklk;fud vfHkfØ;k fyf[k, % 3

(i) H 2O

(ii) HCN

(iii) Na + HSO 3−

Write the chemical reaction of carbonyl group with :

(i) H 2O

(ii) HCN

(iii) Na + HSO 3−

2029/ (Set : C)

( 13 ) 2029/ (Set : C)
(b) gsy oksykMZ ftysUldh vfHkfØ;k D;k gS \ 2

What is Hell Vohlard Zelinsky reaction ?

vFkok
OR

(a) fÝMy ØkW¶V ,Ydkbys'ku vfHkfØ;k dh O;k[;k dhft,A 3
Discuss the Friedel Crafts alkylation reaction.

(b) dkcksZfDlfyd vEy ds nks egÙoiw.kZ mi;ksx nhft,A 2

Give two important uses of carboxylic acids.

S

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