HBSE Class 12 Question Paper 2017 Chemistry

CLASS : 12th (Sr. Secondary) Code No. 2029
Series : SS-M/2017
Roll No. SET : A
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 : A) P. T. O.

(2) 2029/ (Set : A)
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.
(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 : A)

(3) 2029/ (Set : A)
(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) FCC ;wfuV lsy esa fdrus VsVªkgsMªy okW;M gSa \ 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

(ii) 2.5 eksyy foy;u esa lkWY;wV dk eksy ÝsD'ku gS % 1

(A) 0.43 (B) 0.043

(C) 4.3 (D) 43

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

(4) 2029/ (Set : A)
Mole fraction of a solute in 2.5 molal aqueous solution is :

(A) 0.43 (B) 0.043

(C) 4.3 (D) 43

(iii) DoFkukad ds mUu;u ds fy, lgh O;atd (expression) gS % 1

(A) ∆Tb = K b . m (B) ∆T f = K f . m

(C) π = CRT (D) buesa ls dksbZ ugha
Correct expression for elevation in boiling point is :

(A) ∆Tb = K b . m (B) ∆T f = K f . m

(C) π = CRT (D) None of these

(iv) bysDVªksykbV foy;u dh pkydrk fuHkZj djrh gS % 1

(A) bysDVªksykbV dh izÑfr
(B) AC lkslZ dh 'kfDr

(C) nks bysDVªksM ds chp dh nwjh
(D) mijksDr esa ls dksbZ ugha
Conductance of an electrolytic solution depends :

(A) Nature of electrolyte

(B) Power of AC source

(C) Distance between two electrodes

(D) None of the above
2029/ (Set : A)

(5) 2029/ (Set : A)
(v) ,d mRizsjd dk dk;Z ifjorZu ykuk gS % 1

(A) fØ;k dh fxCl ÅtkZ

(B) fØ;k dh ,UFkSYih

(C) fØ;k dh lfØ;u ÅtkZ

(D) mijksDr esa ls dksbZ ugha

Role of a catalyst is to change :

(A) Gibbs energy of reaction

(B) Enthalpy of reaction

(C) Activation energy of reaction

(D) None of the above

(vi) thjks vkMZj vfHkfØ;k dh jsV dkWUlVsUV dh bdkbZ gS % 1

(A) mol L−1s −1 (B) L mol −1s −1

(C) L2mol −2s −1 (D) s −1
Unit of rate constant for a Zero order reaction is :

(A) mol L−1s −1 (B) L mol −1s −1

(C) L2mol −2s −1 (D) s −1

(vii) ckWDlkbM v;Ld esa lkekU;r% v'kq)rk gksrh gS % 1

(A) CuO (B) ZnO

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

(6) 2029/ (Set : A)
(C) Fe2O3 (D) buesa ls dksbZ ugha
Common impurities present in Bauxite ore :
(A) CuO (B) ZnO
(C) Fe2O3 (D) None of these

(viii) fuEu esa dkSu&lk rRo vi:irk ugha n'kkZrk gS \ 1

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

(ix) dkSu&lk dkWEIysDl T;kferh; vkblksesfjTe n'kkZrk gS \ 1

2+
(A) [MnBr4 ]
+
(B) [Pt(NH 3 )3 Cl ]
(C) [PtCl2 (P (C2H 5 )3 )2 ]
2+
(D) [Fe(H 2O )5 NO ]
Which complex exhibit geometrical isomerism ?
2+
(A) [MnBr4 ]
+
(B) [Pt(NH 3 )3 Cl ]
(C) [PtCl2 (P (C2H 5 )3 )2 ]
2+
(D) [Fe(H 2O )5 NO ]

2029/ (Set : A)

(7) 2029/ (Set : A)
(x) ,Ydksgfyd KOH ds lkFk ,fYdy gsykbM~l ds fMgkbMªksgSyksftus'ku dh lqxerk gS % 1
(A) 3° < 2° <1° (B) 3° > 2° > 1°

(C) 3° < 2° > 1° (D) buesa ls dksbZ ugha
The ease of dehydrohalogenation of alkyl halides with alcoholic
KOH is :

(A) 3° < 2° <1° (B) 3° > 2° > 1°

(C) 3° < 2° > 1° (D) None of these

(xi) fuEu esa dkSu KOH(aq) ds lkFk xeZ djus ij ,slhVsfYMgkbM cukrk gS \ 1

(A) CH 3 − CH − Cl 2

(B) CH 3 − CO − Cl

(C) CH 3 − CH 2 − Cl

(D) CH 2 − Cl − CH 2 − Cl

Which on heating with aqueous KOH, produces acetaldehyde ?

(A) CH 3 − CH − Cl 2

(B) CH 3 − CO − Cl

(C) CH 3 − CH 2 − Cl

(D) CH 2 − Cl − CH 2 − Cl

(xii) fuEu esa 3° vehu dkSu&lh gS \ 1

(A) Vªkb,fFky,sehu (B) t-C;wfVy,sehu

(C) N-esfFky,sehu (D) ,fFky,sehu
2029/ (Set : A) P. T. O.

(8) 2029/ (Set : A)
Which of the following is a 3° amine ?

(A) Triethylamine (B) t- Butylamine

(C) N-methylamine (D) Ethylamine

2. fuEu inksa dh ifjHkk"kk nhft, % 2

(i) fgekad
(ii) eksyy fMiz's ku dkWUlVsUV
Define the terms :
(i) Freezing point
(ii) Molal depression constant

3. fuEu inksa dh ifjHkk"kk nhft, % 2

(a) v)Z vk;q
(b) vfHkfØ;k dh dksfV
Define the following terms :
(a) Half life time
(b) Order of a reaction

4. Qsu Iyou fØ;k esa fMizslUV dk D;k jksy gS \ 2

What is the role of a depressant in froth floatation process ?

5. ,d vkWDVsgsMªy fØLVy QhYM esa d-vkfcZVy dh fLIyfVax dk fp= cukb,A 2
Draw the diagram to show splitting of d-orbital in an octahedral crystal
field.

2029/ (Set : A)

(9) 2029/ (Set : A)
6. fuEu ;kSfxdksa ds IUPAC uke fyf[k, % 2

(i) CH3-CHOH-CH2-CHOH-CH3

(ii) C6H5-O-C6H5

Write the IUPAC names of following compounds :

(i) CH3-CHOH-CH2-CHOH-CH3

(ii) C6H5-O-C6H5

7. ,sfyQsfVd vehu ,sjksesfVd vehu ls T;knk {kkjh; gS] O;k[;k dhft,A 2

Aliphatic amines stronger base than aromatic amines, explain.

8. dks&ikWfyesjkbts'ku dh mnkgj.k lfgr O;k[;k dhft,A 2

Explain the term co-polymerization with example.

9. QhukWy ds vEyh; izÑfr dh O;k[;k dhft,A 2

Discuss the acidic nature of phenols.

10. izfrj{kd D;k gS \ nks mnkgj.k nhft,A 2

What are antibiotics ? Give two examples.

11. fuEu MsVk ls vkoksxzknzks la[;k (N0 ) dh x.kuk dhft, % 3

(i) NaCl dk ?kuRo = 2.165 gm cm–3

Na o Cl ds chp dh nwjh = 281 pm
+ –
(ii)

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

( 10 ) 2029/ (Set : A)
Calculate the value of Avogadro number (N0) from following data :

(i) Density of NaCl = 2.165 gm cm–3
+ –
(ii) Distance between Na & Cl in NaCl = 281pm

12. ukWeZy gkbMªkstu bysDVªksM dh jpuk ,oa dk;Z dh O;k[;k dhft,A
3

Describe the construction and working of Normal Hydrogen Electrode.

13. fV.My izHkko dh laf{kIr O;k[;k dhft,A bldk egÙo D;k gS \
3

Briefly explain Tyndal effect. Give its importance.

14. CH 3 − CH 2 − Br dks fuEu esa dSls cnysaxs \ 3

(i) CH 3 − CH 3

(ii) C 2 H 5 − O − C 2H 5

(iii) CH 3 − CH 2 − CN

How will you convert CH 3 − CH 2 − Br into following ?

(i) CH 3 − CH 3

(ii) C 2 H 5 − O − C 2H 5

(iii) CH 3 − CH 2 − CN

2029/ (Set : A)

( 11 ) 2029/ (Set : A)
15. vko';d rFkk vuko';d vehuks vEy D;k gSa \ izR;sd dk ,d mnkgj.k nhft,A 3

What are essential and non-essential amino acids ? Give one example
of each.

16. (a) PF5 dh lajpuk dh O;k[;k dhft,A 3

Discuss the structure of PF5.

(b) ukbVªkstu ds vlkekU; O;ogkj ds eq[; dkj.k D;k gSa \ 2
What are main reasons for anomalous properties of Nitrogen ?

vFkok
OR

(a) vksLVokYM izØe ls vki HNO3 dSls rS;kj djsaxs \ 3

How will you prepare HNO3 by Ostwald process ?

(b) veksfu;k ds dksbZ nks VsLV dk uke crkb,A 2

Name any two tests for ammonia.

17. (a) laØe.k rRo D;k gSa \ Cr(24) ,oa Cu(29) dk bysDVªkWfud foU;kl fyf[k,A 3
What are transition elements ? Write the electronic configuration of
Cr(24) & Cu(29).

(b) ysUFksukbM ladqpu ij uksV fyf[k,A 2

Write a note on lanthanide contraction.

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

( 12 ) 2029/ (Set : A)
vFkok
OR

(a) laØe.k rRoksa ds fuEu xq.kksa dh laf{kIr O;k[;k dhft, % 3
(i) vkW;fud f=T;k
(ii) dkWEIysfDlax VsUMsUlh
(iii) dSVkfyfVd izkiVhZt+
Discuss briefly the following properties of transition metals :

(i) Ionic radii

(ii) Complexing tendency

(iii) Catalytic properties

(b) laØe.k rRo fofHkUu vkWDlhdj.k voLFkk n'kkZrs] gSa D;ksa \ 2

Why transition elements show variable oxidation state ?

18. (a) fuEu ls ,fYMgkbM dSls rS;kj djsaxs \ 3

(i) ,sYdksgkWy
(ii) (RCOO)2-Ca

(iii) ,sYdkbu
How will you prepare Aldehyde from :

(i) Alcohol

(ii) (RCOO)2-Ca

(iii) Alkyne

2029/ (Set : A)

( 13 ) 2029/ (Set : A)
(b) fuEu ds IUPAC uke fyf[k, % 2

Write the IUPAC names of :

(i) CH 3 − CH 2Br − COOH

(ii) COOH − CH 2 − CH 2 − COOH

vFkok
OR

(a) D;ksa ,fYMgkbM] dhVksu dh vis{kk vf/kd 'kh?kz ukfHkd Lusgh ;ksxkRed vfHkfØ;k ls
xqtjrk gS] O;k[;k dhft,A 3
(b) D;ksa dkcksZfDlfyd vEy] dkcksZfuy lewg ds fof'k"V vfHkfØ;kvkas dks ugha nsrk gS \ 2
(a) Why Aldehyde undergo nucleophilic addition reactions more readily
than ketones ? Explain.

(b) Why carboxylic acids do not give characteristic reactions of
Carbonyl group ?

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