Bihar Board Class 12th Model Paper 2026 Chemistry

iz'u iqfLrdk Øekad / Question Booklet Serial No. :

INTERMEDIATE EXAMINATION – 2026
bUVjehfM,V ijh{kk & 2026
¼ANNUAL@okf"kZd ½ iz'u iqfLrdk lsV
dksM
fo"k; dksM MODEL QUESTION PAPER Question Booklet Set

Subject Code:
118 CHEMISTRY (Elective)
Code

jlk;u 'kkL= ¼,sfPNd½
I.Sc. (THEORY/lS)kfUrd)
dqy iz'u % 70 $ 20 $6 ¾ 96 dqy eqfnzr i`"B % 28
Total Questions: 70 + 20 + 6 = 96 Total Printed Pages : 28
¼le; % 3 ?kaVs 15 feuV½ ¼iw.kkaZd % 70½
[Time : 3 Hours 15 Minutes] [Full Marks : 70]

ijh{kkfFkZ;ksa ds fy, funsZ'k @ Instructions for the candidates:

1- ijh{kkFkhZ OMR mÙkj i=d ij viuk iz'u iqfLrdk Øekad ¼10 vadksa dk½ vo'; fy[ksaA
Candidates must enter his / her Question Booklet Serial No. (10 Digits) in the OMR
Answer Sheet.

2- ijh{kkFkhZ ;FkklaHko vius 'kCnksa esa gh mÙkj nsaA
Candidates are required to give their answers in their own words as far as practicable.

3- nkfguh vksj gkf'k;s ij fn;s gq, vad iw.kkZad fufnZ"V djrs gSaA
Figures in the right hand margin indicate full marks.

4- iz'uksa dks /;ku iwoZd i<+us ds fy, ijh{kkfFkZ;ksa dks 15 feuV dk vfrfjä le; fn;k x;k gSA
An extra time of 15 minutes has been allotted for the candidates to read the questions
carefully.

5- ;g iz'u iqfLrdk nks [k.Mksa esa gS & [k.M&*v^ ,oa [k.M&*c^A
This question booklet is divided into two sections – Section ‘A’ and Section ‘B’.

Page 1 of 28

6- [k.M Þvß esa 70 oLrqfu"B iz'u gSa ftuesa ls fdUgha 35 iz'uksa dk mÙkj nsuk vfuok;Z gSA ;fn ijh{kkFkhZ
35 ls vf/kd iz'uksa ds mÙkj nsrs@nsrh gSa] rks izFke 35 mÙkjksa dk gh ewY;kadu fd;k tk;sxkA izR;sd
iz'u ds fy, 1 vad fu/kkZfjr gSA budk mÙkj nsus ds fy, miyC/k djk;s x, OMR mÙkj&i=d
esa fn, x, lgh fodYi dks dkys@uhys ckWy isu ls izxk<+ djsaA fdlh Hkh izdkj ds OgkbVuj@
rjy inkFkZ@ CysM@uk[kwu vkfn dk OMR mÙkj i=d esa iz;ksx djuk euk gS] vU;Fkk ijh{kk
ifj.kke vekU; gksxkA
In Section – A, there are 70 objective type questions, out of which any 35 questions are to
be answered. If the candidates answer more than 35 questions, then only the first 35
questions will be evaluated. Each question carries 1 mark. For answering these darken the
circle with blue/black ball pen against the correct option on OMR Answer Sheet provided
to you. Do not use whitener/liquid / blade/ nail etc on the OMR Answer Sheet otherwise the
result will be treated invalid.

7- [k.M *c^ esa 20 y?kq mÙkjh; iz'u gSaA izR;sd iz'u ds fy, 2 vad fu/kkZfjr gSa] ftuesa ls fdUgha 10
iz'uksa dk mÙkj nsuk vfuok;Z gSA blds vfrfjä bl [k.M esa 6 nh?kZ mÙkjh; iz'u fn;s x;s gSa]
izR;sd ds fy, 5 vad fu/kkZfjr gS] ftuesa ls fdUgha 3 iz'uksa dk mÙkj nsuk vfuok;Z gSA

In Section-B there are 20 short answer type questions. Each question carries 2 marks. Out
of which any 10 questions are to be answered. Apart from these, there are 6 long answer
type questions. Each questions carries 5 marks, out of which any 3 questions are to be
answered.

8- fdlh izdkj ds bysDVªkWfud midj.k dk iz;ksx iw.kZr;k oftZr gSA
Use of any electronic appliances is strictly prohibited.

Page 2 of 28

[k.M & v @ Section-A
oLrqfu"B iz'u @ Objective Type Questions
iz'u la[;k 1 ls 70 rd ds izR;sd iz'u ds lkFk pkj fodYi fn;s x;s gSa] ftuesa ls ,d lgh
gSA vius }kjk pqus x;s lgh fodYi dks OMR 'khV ij fpfàr djsaA fdUgh 35 iz'uksa dk mÙkj
nsaA 35 x 1 = 35
Question Nos 1 to 70 have four options, out of which only one is correct, You have to mark your
selected options on the OMR Sheet. Answer any 35 questions. 35 x 1 = 35

1- dkSu&lk nks"k fØLVy dk ?kuRo ?kVkrk gS \

(A) 'kkWVdh nks"k (B) Ýsady nks"k

(C) baVjfLVf'k;y nks"k (D) v'kqf) nks"k

Which defect decreases the density of a crystal?

(A) Schottky defect (B) Frenkel defect

(C) Interstitial defect (D) Impurity defect

2- lcls vlefer fØLVy iz.kkyh dkSu&lh gaS \

(A) ?kuh; (B) "kV~dks.kh;

(C) f=urk{k (D) fo"keyack{k

Which is the most unsymmetrical crystal system?

(A) Cubic (B) Hexagonal

(C) Triclinic (D) Orthorhombic

3- ;fn ,dd dksf"Bdk esa dqy ijek.kqvksa dh la[;k 4 gS] rks ′‫ݔ‬′ ds LFkku ij D;k vk,xk \
‫ݔ‬
݀=
ܽଷ ܰ஺

(A) M (B) 4M

(C) Z/M (D) Z+M

Page 3 of 28

What will come in place of 'x' if the total number of atom present in an unit cell is 4?

‫ݔ‬
݀=
ܽ ଷ ܰ஺
(A) M (B) 4M

(C) Z/M (D) Z+M

4- tSov.kqvksa ds eksyj nzO;eku dh x.kuk ds fy, fuEufyf[kr esa ls fdl v.kqla[; xq.k/keZ

dk mi;ksx fd;k tkrk gS \
(A) ok"i nkc dk vkisf{kd voueu (B) ijklj.k nkc

(C) fgekad dk voueu (D) DoFkukad dk mé;u

Which of the following colligative property is used to calculate the molar mass of biomolecules?

(A) Relative Lowering of vapour pressure (B) Osmotic pressure

(C) Depression in freezing point (D) Elevation in boiling point

5- fuEufyf[kr esa ls fdl tyh; foy;u dk DoFkukad lcls vf/kd gksxk \

(A) 1.0 M NaOH (B) 1.0 M NH4NO3

(C) 1.0 M Na2SO4 (D) 1.0 M KNO3

Which of the following aqueous solutions will have the highest boiling point?

(A) 1.0 M NaOH (B) 1.0 M NH4NO3

(C) 1.0 M Na2SO4 (D) 1.0 M KNO3

6- fuEufyf[kr esa dkSu&ls KCl,
 vkSj K2SO4 ds fy, Øe'k% okaV gkWQ xq.kd ds eku gS\

(A) 2.2 और 2 (B) 2.2 और 3

(C) 1. 1 और 2 (D) 1.1 और 1

Page 4 of 28

Which of the following are values of Van't Hoff factor for KCl, Na and K₂SO₄ respectively?

(A) 2. 2 and 2 (B) 2. 2 and 3

(C) 1.1 and 2 (D) 1. 1 and 1

7- lkanzrk ls lacf/kr dkSu&lh bdkbZ foy;u ds ok"i nkc ds fy, mi;ksxh gSa \

(A) eksy va'k (B) ikV~lZ ij fefy;u

(C) nzO;eku izfr'kr (D) eksyyrk

Which of the following unit is useful in relating concentration of solution with its vapour
pressure?

(A) Mole fraction (B) Parts per million

(C) Mass percentage (D) Molality

8- 'kq) ty dh eksyyrk D;k gaS \

(A) 55.5 (B) 50.5

(C) 18 (D) 60.5

What is the molality of pure water?

(A) 55.5 (B) 50.5

(C) 18 (D) 60.5

9- lsy fLFkjkad dh bdkbZ gaS \

(A) ohm-1 cm-1 (B) cm

(C) ohm-1 cm (D) cm-1

The unit of cell constant is:

(A) ohm-1 cm-1 (B) cm

(C) ohm-1 cm (D) cm-1

Page 5 of 28

10- ekud gkbMªkstu bySDVªksM ¼SHE½ ds bySDVªkSM foHko dk eku D;k gksrk gSa \

(A) 0.34 V (B) -0.44 V

(C) 0 V (D) -0.76 V

What is the value of electrode potential of Standard Hydrogen Electrode (SHE)?

(A) 0.34 V (B) -0.44 V

(C) 0 V (D) -0.76 V

11- fuEufyf[kr esa dkSu&lk 'krZ lsy dh Lor% izofrZrrk ds fy, lgh gSa \

(A) ∆ = −, ° = + (B) ∆ = +, ° = 0

(C) ∆ = −, ° = 0 (D) ∆ = +, ° = −

Which of the following condition is correct for spontaneity of a cell?

(A) ∆ = −, ° = + (B) ∆ = +, ° = 0

(C) ∆ = −, ° = 0 (D) ∆ = +, ° = −

12- ,d eksy bysDVªkWu ij fdruk vkos'k gksrk gSa \

(A) 6.023 x 1023 C (B) 9.65 x 104 C

(C) 1.6 x 10-19 C (D) 6.28 x 1019 C

What is the charge on one mole of electron?

(A) 6.023 x 1023 C (B) 9.65 x 104 C

(C) 1.6 x 10-19 C (D) 6.28 x 1019 C

13- fuEufyf[kr esa ls dkSu&lh 'kwU; dksfV dh vfHkfØ;k gSa \

(A) N2O5 dk vi?kVu (B) NH3 dk vi?kVu

(C) N2O dk vi?kVu (D) vfLFkj ukfHkd dk jsfM;ks/kehZ {k;

Page 6 of 28

Which of the following is a zero order reaction?

(A) Decomposition of N2O5 (B) Decomposition of NH3

(C) Decomposition of N2O (D) Radioactive decay of unstable nuclei

14- mRizsjd fdl rjg dk ifjorZu ykrk gSa \

(A) vfHkfØ;k dh fxCt ÅtkZ (B) vfHkfØ;k dh ,UFkSYih

(C) vfHkfØ;k dh lfØ;.k mtkZ (D) lkE;koLFkk fLFkjkad

What type of change does a catalyst bring?

(A) Gibb's energy of reaction (B) Enthalpy of reaction

(C) Activation energy of reaction (D) Equilibrium constant

15- 'kwU; dksfV dh vfHkfØ;k ds fy, nj fLFkjkad dh bdkbZ D;k gSa \

(A)  ିଵ ିଵ
(B) ିଵ

(C)  ିଵ ିଵ (D) ଶ
 ିଵ ିଵ

What is the unit of rate constant for a zero order reaction?

(A)  ିଵ ିଵ
(B) ିଵ

(C)  ିଵ ିଵ (D) ଶ
 ିଵ ିଵ

16- 'kqU;&dksfV dh vfHkfØ;k dks 100% iw.kZ gksus esa fdruk le; yxrk gaS \

(A) t100% = a / k (B) t100% = a. k

(C) t100% = a /2k (D) buesa ls dksbZ ugha

What is the time required for 100% completion of zero order reaction?

(A) t100% = a / k (B) t100% = a. k

(C) t100% = a /2k (D) None of these

Page 7 of 28

17- fuEufyf[kr esa ls fdl izfØ;k esa nks izkoLFkkvksa ds chp dksbZ varjki`"B ugha gksrk gSa \

(A) fØLVyhdj.k (B) fo"kekaxh mRizsj.k

(C) lekaxh mRizsj.k (D) la{kkj.k

Which of the following process does not occur at the interface of phases?

(A) Crystallisation (B) Heterogenous catalysis

(C) Homogeneous catalysis (D) Corrosion

18- fuEufyf[kr esa ls dksu&lh HkSfrd vf/k'kks"k.k ds fy, ,d vuqdwy fLFkfr ugha gSa \

(A) mPp nkc (B) -∆H

(C) mPp rkieku (D) buesa ls dksbZ ugha

Which of the following is not a favourable condition, for physical adsorption?

(A) High pressure (B) - ΔΗ

(C) High temperature (D) None of these

19- fuEufyf[kr esa ls dkSu&lk lgh <ax ls lqesfyr ugha gSa \

(A) nw/k & ik;l (B) dksgjk & Bksl lkWy

(C) iuhj & tsy (D) /kqa/k & ,jkslksy

Which of the following is not correctly matched?

(A) Milk-emulsion (B) Fog-solid sol

(C) Cheese - gel (D) Haze-aerosol

20- ml dksykbMh ra= dk D;k uke gS ftlesa nksuks ifjf{kIr izkoLFkk vkSj ifj{ksi.k ek/;e

rjy gksrs gSa \
(A) ik;l (B) tsy

(C) lkWy (D) Qkse

Page 8 of 28

What is the name of a colloidal system in which both the dispersed phase and dispersion medium
are Liquids?
(A) Emulsions (B) Gel
(C) Sol (D) Foam

21- nks vyx&vyx ?kkrq ds ijek.kqvksa okyk v;Ld dkSu&lk gS \

(A) gseVkbV (B) dkWij ikbjkbV~l

(C) eSykdkbV (D) eSXusVkbV

Which ore has two different metal atoms?

(A) Haematite (B) Copper pyrites

(C) Malachite (D) Magnetite

22- mPp 'kq)rk okys VkbVsfu;e dks izkIr djus ds fy, fdl fof/k dk mi;ksx fd;k tkrk

gS\
(A) oSu vkdZy fof/k (B) iksfyax

(C) diys'ku fof/k (D) bYsdVªks&fjQkbfuax

Which method is used to obtain Titanium in a state of high purity?

(A) Van Arkel method (B) Poling

(C) Cupellation (D) Electrorefining

23- fuEufyf[kr esa ls fdl /kkrq dh dkcZu vip;u izfØ;k }kjk fu"df"kZr ugha fd;k tk

ldrk gS \
(A) Pb (B) Al

(C) Zn (D) Hg

Which of the following metal cannot be extracted by carbon reduction process?

(A) Pb (B) Al

(C) Zn (D) Hg

Page 9 of 28

24- fuEufyf[kr esa ls fdl v;Ld dk lkanz.k jklk;fud fu{kkyu fof/k }kjk fd;k tkrk gSa \

(A) xSysuk (B) dkWij ikbjkbV

(C) flukckj (D) vtsZaVkbV

Which one of the following ore is concentrated by chemical Leaching method?

(A) Galena (B) Copper pyrite

(C) Cinnabar (D) Argentite

25- izxyu dk mís'; D;k gSa \

(A) vkWDlhd`r djuk (B) vipf;r djuk

(C) ,d feJ /kkrq izkIr djuk (D) ok"I'khy v'kqf);ksa dks vyx djuk

What is the purpose of smelting an ore?

(A) Oxidise it (B) reduce it

(C) Obtain an alloy (D) Separate volatile impurities

26- fuEufyf[kr esa ls dkSu&ls rRo esa pπ – dπ ca/k 'kkfey gks ldrs gSa \

(A) dkcZu (B) ukbVªkstu

(C) QkLQksjl (D) cksjkWu

Which of the following elements can be involved in pπ – dπ bonding?

(A) Carbon (B) Nitrogen

(C) Phosphorus (D) Boron

27- H3PO2dh {kkjdrk D;k gSa \

(A) 1 (B) 2

(C) 3 (D) 4

Page 10 of 28

What is the basicity of H3PO2?

(A) 1 (B) 2

(C) 3 (D) 4

28- fuEufyf[kr esa lcls vf/kd {kkjh; dkSu gSa \

(A) PH3 (B) SbH3

(C) NH3 (D) AsH3

Which of the following is most basic?

(A) PH3 (B) SbH3

(C) NH3 (D) AsH3

29- fuEufyf[kr esa ls dkSu&lk foy;u LVkpZ ds lkFk uhyk jax nsrk gS \

(A) F2 (B) Cl2

(C) Br2 (D) I2

Which of the following gives blue colour with starch Solution?

(A) F2 (B) Cl2

(C) Br2 (D) I2

30- ukbVªkstu dh vf/kdre lgla;kstdrk D;k gaS \

(A) 3 (B) 5

(C) 4 (D) 6

What is the maximum covalency of Nitrogen?

(A) 3 (B) 5

(C) 4 (D) 6

Page 11 of 28

31- fuEufyf[kr esa ls dkSu&lh vkDlhdj.k voLFkk lHkh ySaFksukbM~l ds fy, lkekU; gS \

(A) +2 (B) +3

(C) +4 (D) +5

Which of the following oxidation state is common for all Lanthanoids?

(A) +2 (B) +3

(C) +4 (D) +5

32- Fe3+ vk;u esa fdruh v;qfXer bysDVªkWu ekStwn gSa \

(A) 4 (B) 5

(C) 3 (D) 2

How many unpaired electrons are present in Fe3+ ion?

(A) 4 (B) 5

(C) 3 (D) 2

33- dkWij dk bysDVªkWfud foU;kl D;k gaS \

(A) [Ar] 3d94s² (B) [Ar] 3d104s1

(C) [Ar] 3d84s² (D) [Ar] 3d104s2

What is the electronic configuration of copper?

(A) [Ar] 3d94s² (B) [Ar] 3d104s1

(C) [Ar] 3d84s² (D) [Ar] 3d104s2

34- fuEufyf[kr esa ls dkSu&lk rRo laØe.k Js.kh ls lacaf/kr ugha gaS \

(A) czksfeu (B) rkack

(C) yksgk (D) Øksfe;e

Page 12 of 28

Which of the following elements does not belong to the transition series?

(A) Bromine (B) Copper

(C) Iron (D) Chromium

35- KMnO4ds fuekZ.k ds fy, izkjafHkd lkexzh D;k gSa \

(A) MnSO4 (B) MnO2

(C) K2MnO4 (D) K2Cr2O7

What is the starting material for the preparation of KMnO4?

(A) MnSO4 (B) MnO2

(C) K2MnO4 (D) K2Cr2O7

36- tfVy ;kSfxd [Co(NH3)5Cl]Cl₂ dk IUPAC uke D;k gS \

(A) isaVk,EehuDyksfjMksdksckYV¼III½ DyksjkbM (B) isaVk,EehuDyksjkssdksckYV¼II½ DyksjkbM

(C) DyksjkssisaVk,EehudksckYVsV¼III½ DyksjkbM (D) DyksjkssisaVk,EehudksckYV¼III½ DyksjkbM

What is the IUPAC name of complex compound [Co(NH3)5Cl]Cl₂?

(A) Pentaamminechloridocobalt (III) Chloride (B) Pentaamminechlorocobalt (II) Chloride

(C) Chloropentaamminecobaltate(III) chloride (D) Chloropentaamminecobalt (III) Chloride

37- fuEufyf[kr esa ls dkSu&lk lkWYosV leko;rk dk ,d mnkgj.k gSa \

(A) [Co(NH3)5 SO₄]Br (B) [Co(NH3)5 (NO₂)]2+

(C) [Pt(NH₃)₂Cl2] (D) [Cr(H₂O)6]Cl3

Which of the following is an example of solvate isomerism?
(A) [Co(NH3)5 SO₄]Br (B) [Co(NH3)5 (NO₂)]2+

(C) [Pt(NH₃)₂Cl2] (D) [Cr(H₂O)6]Cl3

Page 13 of 28

38- fuEufyf[kr esa ls dkSu&lk gSyks,jhu gSSa \

(A) CH3Cl (B) CH3CH2Br

(C) C6H5Cl (D) CH3I

Which of the following is a haloarene?

(A) CH3Cl (B) CH3CH2Br

(C) C6H5Cl (D) CH3I

39- fuEufyf[kr esa ls dkSu&lk SN2 vfHkfØ;k ds izfr lcls vf/kd fØ;k'khy gS \

(A) 2&czkseksC;wVsu (B) 2&czkseks&2&esfFkyizksisu

(C) esfFky czksekbM (D) 1&czkseksC;wVsu

Which of the following is most reactive towards SN2 reaction?

(A) 2-Bromobutane (B) 2-Bromo-2-methylpropane

(C) Methyl bromide (D) 1-Bromobutane

40- vYdksgy ls vYdkby gSykbM~l cukus ds fy, fuEufyf[kr esa ls fdldk mi;ksx ugha

fd;k tkrk gS \
(A) 1ଶ (B) /ଶ

(C) ହ (D) ଶ

Which of the following is not used for the preparation of alkyl halides from alcohols?

(A) 1ଶ (B) /ଶ

(C) ହ (D) ଶ

41- ,usfUVvksej dSls fHké gksrs gSa \

(A) DoFkukad (B) /kzqfod`r izdk'k ds ?kw.kZu

(C) xyukad (D) ?kqyu'khyrk

Page 14 of 28

How do enantiomers differ?

(A) Boiling point (B) rotation of polarised light

(C) Melting point (D) Solubility

42- fuEufyf[kr esa lss dkSu&lh vfHkfØ;k bZFkj ds fuekZ.k ls lacaf/kr gSa \

(A) dksYcs dh vfHkfØ;k (B) jkbej&VheSu dh vfHkfØ;k

(C) fxzXukMZ dh vfHkfØ;k (D) fofy;elu dk laÜys"k.k

Which of the following reactions is related to the preparation of ethers?

(A) Kolbe's reaction (B) Reimer-Tiemann reaction

(C) Grignard reaction (D) Williamson Synthesis

43- fuEufyf[kr esa ls dkSu&lk vfHkdeZd 10 vYdksgy dks ,fYMgkbM esa vkWDlhdj.k djrk

gS fcuk C=C f}&vkca/k dks izHkkfor fd, \
(A) tyh; ,lhVksu foy;u esa CrO3 (B) tyh; K2Cr2O7

(C) {kkjh; KMnO4 (D) buesa ls dksbZ ugha

Which of the following reagent oxidizes 1º alcohol to aldehyde without affecting C=C double
bond?

(A) CrO3 in aqueous acetone solution (B) aqueous K2Cr2O7

(C) alkaline KMnO4 (D) None of these

44- fuEufyf[kr esa ls dkSu&lk mRikn curk gS tc fQuksy ଷ vkSj
 ds lkFk
vfHkfØ;k djrk gS \
(A) csUtsfYMgkbM (B) lSfyflySfYMgkbM

(C) lSfyflfyd vEy (D) csatksbd vEy

Page 15 of 28

Which of the following product is formed when phenol reacts with ଷ and
?

(A) Benzaldehyde (B) Salicylaldehyde

(C) Salicylic acid (D) Benzoic acid

45- dkSu lk bysDVªksQkby uhps nh xbZ vfHkfØ;k esa 'kkfey gSa \

+ +
(B) 

(A)
ଶ

−
(C)  (D) : ‫݈ܥܥ‬ଶ
ଷ

Which electrophile is involved, in the reaction given below?

+ +
(B) 

(A)
ଶ

−
(C)  (D) : ‫݈ܥܥ‬ଶ
ଷ

46- fuEufyf[kr esa ls dkSu&lk vfHkdeZd ,lhVksu vkSj csUtsfYMgkbM nksuks ls vfHkfØ;k ugha
djrk gS \
(A) lksfM;e gkbMªkstulYQkbV (B) Qsfuy gkbMªkthu

(C) Qsgfyax dk foy;u (D) fxzXukMZ vfHkdeZd

Which of the following reagents does not react with both acetone and benzaldehyde?

(A) Sodium hydrogen sulphite (B) Phenyl hydrazine

(C) Fehling's solution (D) Grignard reagent

47- fuEufyf[kr esa ls dkSu vk;ksMksQkWeZ ijh{k.k ugha nsrk gS \

(A) ,FksukWy (B) ,Fksuy

(C) isaVsu&2&vksu (D) isaVsu&3&vksu

Page 16 of 28

Which of the following does not give iodoform test?

(A) Ethanol (B) Ethanal

(C) Pentan-2-one (D) Pentan-3-one

48- fuEufyf[kr esa ls lcls vf/kd vEyh; dkSu gS \

(A) CF3COOH (B) CCl3COOH

(C) CBr3COOH (D) CH3COOH

Which of the following is most acidic?

(A) CF3COOH (B) CCl3COOH

(C) CBr3COOH (D) CH3COOH

49- fuEufyf[kr esa ls fdldk pKa eku lcls de gS \

(A) HCOOH (B) CH3COOH

(C) (CH3)₂-CH-COOH (D) CH3-CH2-COOH

Which of the following has the lowest pka value?

(A) HCOOH (B) CH3COOH

(C) (CH3)₂-CH-COOH (D) CH3-CH2-COOH

50- fuEufyf[kr esa ls dkSu&lk dkcksZfuy lewg dks −‫ܪܥ‬ଶ − esa ifjofrZr djsxk \

(A) NH₂ NH₂/HCl (B) Zn-Hg/conc.HCl

(C) H₂/Ni (D) LiAlH4

Which of the following will convert carbonyl group into −‫ܪܥ‬ଶ −?

(A) NH₂ NH₂/HCl (B) Zn-Hg/conc.HCl

(C) H₂/Ni (D) LiAlH4

Page 17 of 28

51- fuEufyf[kr esa ls dkSu ,d izkFkfed ,ehu gS \

(A) VVZ&cqVkby,ehu (B) ,u&esfFky esFkSukekbu

(C) VªkbesfFky,ekbu (D) ,u] ,u&MkbesfFky ,Fksuekbu

Which of the following is a primary amine?

(A) Tert-butylamine (B) N-methylmethanamine

(C) Trimethylamine (D) N, N-dimethyletharamine

52- fuEufyf[kr esa ls dkSu lcls izcy {kkj gS \

(A) (CH₃)₂ NH (B) (CH3)3 N
(C) NH3 (D) C6H5NH2

Which of the following is the strongest base?

(A) (CH₃)₂ NH (B) (CH3)3 N
(C) NH3 (D) C6H5NH2

53- gkWQeSu czksekekbM fuEuhdj.k vfHkfØ;k dk vafre mRikn D;k gS \

(A) ,d ,ekbM (B) ,d ukbVªkby

(C) ,d izkFkfed ,sehu ftlesa ,d dkcZu de gks

(D) ,d izkFkfed ,sehu ftlesa dkcZu dh la[;k leku gks

What is the end product of Hoffmann's bromamide degradation reaction?

(A) An amide (B) A nitrile

(C) A primary amine with one carbon less

(D) A primary amine with the same number of carbons

54- xSfcz;y FkSfyekbM la'ys’k.k esa fuEufyf[kr esa ls dkSu&lk vfHkdeZd dk mi;ksx fd;k
tkrk gS \
(A) NH3 (B) KOH

(C) HNO2 (D) LiAlH4

Page 18 of 28

Which of the following reagents is used in the Gabriel phthalimide synthesis?

(A) NH3 (B) KOH

(C) HNO2 (D) LiAlH4

55- izksVhu dh bdkbZ dkSu&lh gS \

(A) vehuks vEy (B) olh; vEy

(C) U;wfDy;ksVkbM (D) eksukslSdjkbM

Which is the building block of proteins?

(A) Amino acids (B) Fatty acids

(C) Nucleotides (D) Monosaccharides

56- ß,LdkWfcZd vEyÞ fdl foVkfeu dk uke gS \

(A) foVkfeu A (B) foVkfeu B

(C) foVkfeu C (D) foVkfeu D

Which vitamin is known as “ascorbic acid”?

(A) Vitamin A (B) Vitamin B

(C) Vitamin C (D) Vitamin D

57- ikS/kksa esa dkcksZbkbMªsV ds HkaMkj.k dk :i dkSu&lk ikWyhlSdsjkbM gSa \

(A) Xykbdkstu (B) LVkpZ

(C) lsY;wykst (D) dkbfVu

Which polysaccharide is the storage form of carbohydrate in plants?

(A) Glycogen (B) Starch

(C) Cellulose (D) Chitin

Page 19 of 28

58- isV esa izksVhu dks dkSu lk ,atkbe ipkrk gS \

(A) ,ekbyst (B) ykbist

(C) isfIlu (D) ekYVst

Which enzyme digests proteins in the stomach?

(A) Amylase (B) Lipase

(C) Pepsin (D) Maltase

59- buesa ls dkSu&lk ,d izkd`frd ikWfyej gSa \

(A) uk;ykWu &6] 6 (B) cSdsykbV

(C) LVkpZ (D) ihohlh

Which of the following is a natural polymer?

(A) Nylon-6,6 (B) Bakelite

(C) Starch (D) PVC

60- buesa ls dkSu&lk FkeksZlsfVax IykfLVd gS \

(A) cSdsykbV (B) ihohlh

(C) ikWyhFkhu (D) uk;ykWu&6

Which of the following is a thermosetting plastic?

(A) Bakelite (B) PVC

(C) Polythene (D) Nylon-6

61- buesa ls dkSu&lk lecgqyd gSa \

(A) uk;ykWu &6] 6 (B) C;wuk&S

(C) ikWyhfoukby DyksjkbM (D) cSdsykbV

Page 20 of 28

Which of the following is a homopolymer?

(A) Nylon-6,6 (B) Buna-S

(C) Polyvinyl chloride (D) Bakelite

62- buesa ls dkSu&lk bykLVksej gaS \

(A) ikWyhLVkbjhu (B) C;wuk&N

(C) uk;ykWu&6 (D) ihohlh

Which of the following is an elastomer?

(A) Polystyrene (B) Buna-N

(C) Nylon-6 (D) PVC

63- buesa ls dkSu&lk d`f=e feBkl iznku djus okyk inkFkZ gSa \

(A) Xywdkst (B) ,LikVsZe

(C) ÝqDVkst (D) lqØkst

Which of the following is an artificial sweetener?

(A) Glucose (B) Aspartame

(C) Fructose (D) Sucrose

64- nnZ de djus ds fy, dkSu&lh nok,¡ iz;ksx dh tkrh gS \

(A) ,ukYtsfld (B) ,aVhik;jsfVd

(C) ,aVhck;ksfVd (D) VªSafDoykbtj

Which type of drugs are used to reduce pain?

(A) Analgesics (B) Antipyretics

(C) Antibiotics (D) Tranquilizers

Page 21 of 28

65- buesa ls dkSu&lk [kk| ifjj{kd ugha gS \

(A) lksfM;e csatks,V (B) iksVkfl;e esVkckbZlYQkbV

(C) lksfcZd vEy (D) iSjkflVkeksy

Which of the following is not a food preservative?

(A) Sodium benzoate (B) Potassium metabisulphite

(C) Sorbic acid (D) Paracetamol

66- dBksj ty esa lQkbZ ds fy, fdls iz;ksx fd;k tkrk gS \

(A) lkcqu (B) viektZd

(C) (A) vkSj (B) nksuksa (D) buesa ls dksbZ ugha

Which of the following is used for cleaning in hard water?

(A) Soap (B) Detergent

(C) Both (A) and (B) (D) None of these

67- fuEufyf[kr esa ls dkSu&lk dFku lsy esa vfØ; bysDVªksM ds ckjs esa lgh ugha gS \

(A) ;g lsy vfHkfØ;k esa Hkkx ugha ysrk gSaA

(B) ;g vkWDlhdj.k ;k vip;u ds fy, lrg iznku djrk gaSA

(C) ;g bysDVªkWuksa ds pkyu ds fy, lrg iznku djrk gaSA

(D) ;g jsMkWDl vfHkfØ;k ds fy, lrg iznku djrk gaSA

Which of the following statement is not correct about an inert electrode in a cell?

(A) It does not participate in the cell reaction.

(B) It provides surface either for oxidation or for reduction reaction.

(C) It provides surface for conduction of electrons.

(D) It provides surface for redox reaction.

Page 22 of 28

68- ,d prq"dks.kh; fØLVy esa(

(A)  =  =  ,  =  =  ≠ 90଴ (B)  =  ≠  ,  =  =  = 90଴

(C)  ≠  ≠  ,  =  =  = 90଴ (D)  =  ≠  ,  =  = 90଴ ,  = 120଴

In a tetragonal crystal;

(A)  =  =  ,  =  =  ≠ 90଴ (B)  =  ≠  ,  =  =  = 90଴

(C)  ≠  ≠  ,  =  =  = 90଴ (D)  =  ≠  ,  =  = 90଴ ,  = 120଴

69- fuEufyf[kr esa ls dkSu&lk ,d vkn'kZ foy;u ds fy, xyr gS \

(A) Δ ௠௜௫ =  (B) Δ ௠௜௫ = 

(C) Δ  = ௢௕௦ − ௖௔௟௖௨௟௔௧௘ௗ jkmYV ds fu;e ls = 0

(D) Δ ௠௜௫ = 

Which of the following is incorrect for an ideal solution?

(A) Δ ௠௜௫ =  (B) Δ ௠௜௫ = 

(C) Δ  = ௢௕௦ − ௖௔௟௖௨௟௔௧௘ௗ by Roult’s law = 0

(D) Δ ௠௜௫ = 0

70- fuEufyf[kr esa ls dkSu&lk xzkQ izFke dksfV vfHkfØ;k ds fy, lgh gS \

Page 23 of 28

Which of the following graph corresponds to first order reaction?

[k.M & c @ Section-B
y?kq mÙkjh; iz'u @ Short Answer Type Questions
iz'u la[;k 1 ls 20 rd ds iz'u y?kq mÙkjh; gSA fdUgh 10 iz'uksa ds mÙkj nsaA izR;sd iz'u
ds fy, 2 vad fu/kkZfjr gSa % 10 x 2 = 20
Question Nos 1 to 20 are Short Answer Type. Answer any 10 questions. Each question carries 2
marks: 10 x 2 = 20

1- vLFkk;h nzoksa ds foy;u ds fy, jkmYV dk fu;e fy[ksaA
Write Raoult's law for a solution of volatile liquids.

2- izksVhu dk fod`rhdj.k D;k gS \
What is denaturation of protein?

3- xeZ djus ij lQsn  ihyk D;ksa gks tkrk gS \
Why does white  becomes yellow upon heating?

Page 24 of 28

4- ,d izFke dksfV vfHkfØ;k dk nj fLFkjkad 1.15 × 10-3S-1 gSaA bl vfHkdkjd ds 5gm dks
3 gm rd de gksus esa fdruk le; yxsxk \
A first order reaction has a rate constant 1.15 × 10-3S-1. How long will 5 gm of this reactant take
to reduce to 3gm?

5- cgq&vkf.od vkSj o`gr~&vkf.od dksykWbM esa D;k varj gaS\
What is the difference between multimolecular and macromolecular colloids?

6- o &ukbVªksfQuksy dk DoFkaukd p &ukbVªksfQuksy ls de D;ksa gksrk gS \
Why o-Nitrophenol has lower boiling point than p-Nitrophenol?

7- laØe.k /kkrq,¡ jaxhu ;kSfxd D;ks cukrh gSa \
Why do transition metals form coloured compounds?

8- NH3, PH₃ dh rqyuk esa vf/kd {kkjh; D;ksa gS \
Why is NH3 more basic than PH₃?

9- baVjgSykstu ;ksfxd D;k gS \ ,d mnkgj.k nhft,A
What are interhalogen compounds? Give one example.

10- ,flfVyhdj.k vfHkfØ;k D;k gS \
What is acetylation reaction?

11- Dyksjkscsathu esa C-Cl ca/k rksM+uk dfBu D;ksa gSa \
Why is C-Cl bond in chlorobenzene difficult to break?

12- eksukslSdjkbM D;k gksrs gS \ ,d mnkgj.k nhft,A
What are monosaccharides? Give one example.

13- Nn~e izFke dksfV vfHkfØ;k D;k gksrh gS \
What is pseudo first order reaction?

Page 25 of 28

14- iksVSf'k;e VsVªkDyksfjMksiSysMsV¼II½ dk lw= fy[ksaA
Write the formula of PotassiumtetrachloridoPalladate(II).

15- esFkkWDlhesFksu dh rqyuk esa ,FksukWy ds mPp DoFkukad dk dkj.k crkb,A
Give reason for the higher boiling point of ethanol in comparison to methoxymethane.

16- xSfcz;y FkSfyekbM laÜys"k.k ds fy, iw.kZ lehdj.k fy[ksaA
Write complete equation for Gabriel phthalimide synthesis.

17- Qkbczl izksVhu vkSj Xykscqyj izksVhu esa nks varj fyf[k,A
Write two differences between fibrous protein and globular protein.

18- lqØkst dks bUoVZ 'kqxj D;ksa dgk tkrk gS \
Why is sucrose called invert sugar?

19- QSjkMs ds fo|qr&vi?kVu laca/kh izFke fu;e dks fy[ksa \
Write Faraday's 1st law of Electrolysis.

20- dSfYlus'ku D;k gS \ ,d mnkgj.k nhft,A
What is calcination? Give one example.

nh?kZ mÙkjh; iz'u @ Long Answer Type Questions

iz'u la[;k 21 ls 26 rd ds nh?kZ mÙkjh; gSA buesa ls fdlh rhu iz'u dk mÙkj nsaA izR;sd
iz'u ds fy, 5 vad fu/kkZfjr gaSA 3 x 5 = 15
Question Nos 21 to 26 are Long Answer Type. Answer any 3 questions. Each question carries 5
marks. 3 x 5 = 15

21- gsujh ds fu;e fyf[k,A gsujh ds fu;e ds rhu vuqiz;ksx fyf[k,A 2$3
Write Henry's Law. Write three applications of Henry's Law.

Page 26 of 28

22- ySaFksukbM ladqpu D;k gS \ ySaFksukbM ladqpu ds rhu ifj.kke fyf[k,A 2$3
What is Lanthanoid Contraction? Write three consequences of Lanthanoid contraction.

23- fØLVy {ks= foikVu mtkZ D;k gS \ la;kstdrk ca/k fl)kr dk mi;ksx djds [Co(NH3)6]3+
dh T;kfefr vkSj pqacdh; O;ogkj Kkr djsaA 2$1½$1½
What is crystal field splitting energy? Using the valence bond approach, deduce the shape and
magnetic character of [Co(NH3)6]3+.

24. a) Dyksjhu xSl ls cuus okyh nks tgjhyh xSlksa ds uke D;k gS \ 1½
b) I2dh rqyuk essa ICl vf/kd izfrfØ;k'khy D;ksa gSa \ 1½
c) fuEufyf[kr lehdj.k dks larqfyr djsa & 1$1

(i) ଺ + ₂ → 2 ₂ + ‫ܨ‬
(ii) Ag + ‫ܥ‬5 → 
‫ ܥ‬+ ݈ଷ

a) What is the name of two poisonous gases which can be prepared from chlorine gas?
b) Why is ICl more reactive than I₂?
c) Balance the following equations:
(i) ଺ + ₂ → 2 ₂ + ‫ܨ‬
(ii) Ag + ‫ܥ‬5 → 
‫ ܥ‬+ ݈ଷ

25. a) fuEufyf[kr ;kSfxdksa dks muds DoFkukad ds c<+rs Øe esa O;ofLFkr djsa % 1
C2H5OC2H5, C4H9COOH, C4H9OH

b) uhps nh x;h vfHkfØ;k dk uke D;k gS \ 1
ܲ݀/‫ܱܵܽܤ‬4

݈ + H₂
⎯⎯⎯⎯⎯ RCHO + HCl

c) fuEufyf[kr dk dkj.k crkb,A 1½+1½
(i) csatksbd ,flM] ,flfVd ,flM ls vf/kd etcwr ,flM D;ksa gS \
(ii) fxzxukMZ vfHkdeZdksa dks futZy ifjfLFkfr;ksa esa D;ksa rS;kj fd;k tkuk
pkfg, \

Page 27 of 28

a) Arrange the following compounds in the increasing order of boiling points:
C2H5OC2H5, C4H9COOH, C4H9OH
b) What is the name of reaction given below:
ܲ݀/‫ܱܵܽܤ‬4

݈ + H₂
⎯⎯⎯⎯⎯ RCHO + HCl

c) Give reason for the following:
(i) Benzoic acid is stronger acid than acetic acid.
(ii) Why Grignard reagents should be prepared under anhydrous conditions?

26. a) dkfcZy,sehu vfHkfØ;k D;k gSa \ 2

b) fuEufyf[kr ;kSfxd ;qXeksa ds chp Hksn djus ds fy, ,d ljy ijh{k.k crkb,% 3
(i) csatksbd vEy vkSj fQukWy
(ii) csatSfYMgkbM vkSj csatksbd vEy
a) What is Carbylamine reaction?
b) Give simple tests to distinguish between the following pairs of compounds:
(i) Benzoic acid and phenol.
(ii) Benzaldehyde and benzoic acid.

Page 28 of 28