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http://www.chemistrycrest.com/ Page 1

PAPER-2

Maximum Marks: 80

Question paper format and Marking scheme:

1. In Section I (Total Marks: 24), for each question you will be awarded 3 marks if you darken ONLY thebubble corresponding to the correct answer and zero marks if no bubble is darkened. In all other cases,minus one (1) mark will be awarded.

2. In Section II (Total Marks: 16), for each question you will be awarded 4 marks if you darken ALL thebubble(s) corresponding to the correct answer(s) ONLY and zero marks other wise. There are no negativemarks in this section.

3. In Section III (Total Marks: 24), for each question you will be awarded 4 marks if you darken ONLY thebubble corresponding to the correct answer and zero marks otherwise There are no negative marks in thissection.

4. In Section IV (Total Marks: 16), for each question you will be awarded 2 marks for each row in whichyou have darken ALL the bubble(s) corresponding to the correct answer(s) ONLY and zero marksotherwise. Thus each question in this section carries a maximum of 8 Marks. There are no negative marksin this section.

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SECTION I (Total Marks : 24)(Single Correct Answer Type)

This Section contains 8 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out ofwhich ONLY ONE is correct.

1. The plot of compressibility factor (Z) versus pressure for the same gas given at different temperatures.

3T

2T

1T

4T

Ideal gas

P(atm)

Z

1.0

The correct order of temperatures is

A) T4 > T3 > T2 > T1 B) T2 > T3 > T1 > T4

C) T1 > T2 > T3 > T4 D) T3 > T2 > T1 > T4

2. Dipole moment of the following molecules are in the order

C C=

Cl

H

CH3

H

(1)

C C=

Cl

NO2

H C3

(2)

Cl

C C=

ClH C3

(3)

Cl Cl

C C=

H

(4)

Cl

Cl H

(A) 1 > 4 > 2 > 3 (B) 2 > 3 > 1 > 4

(C) 3 > 2 > 4 > 1 (D) 2 > 4 > 1 > 3

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3CH

32CHCH

HH

HOCl

3CH

32CHCH

HH

HO

Cl

3. ( ) ( ) ( )2 2 22Cl g Ba OH X aq BaCl H O

+ + +

2 4 4 X H SO Y BaSO+ +

2 2365KY Z H O O

> + + Y, Z respectively, and magnetic behavior exhibited by Z are

A)4 2, HClO ClO , diamagnetic B) 3 2, HClO ClO , paramagnetic

C)3 2, HClO Cl O , diamagnetic D) 4 2 7, HClO Cl O , paramagnetic

4. NH4Cl crystallizes in a body-centred cubic lattice with edge length of unit cell equal to 387 pm. If

the radius of the Cl

ion is 181 pm, radius for NH4+

ion is(A) 154.1 pm (B) 92.6 pm(C) 366.3 pm (D) none of these

5. The isomers given are

and

(A) Identical (B) Diastereomers

(C) Enantiomers (D) none of the above

6.560 K 470 K

inert atmosphere under pressure Z X Y

The three allotropes ' ', ' 'X Y and ' 'Z of phosphorus in the above changes are respectively,

A) white, black and red B) black, white and red

C) red, black and white D) red, violet and black

7. An optically active Aldose A upon treatment with 4NaBH is converted into an optically inactivealditol (B). A on Ruff degradation gives C whose alditol (D) is optically inactive. Ruff degradation ofC gives optically active D-glyceraldehyde A,B,C & D areA) B-D- Glucopyranose, D-glucitol, D-ribose, ribitol

B) D- ribose, ribitol, D-erythrose, erythritol

C) D glucopyranose, L-Dlucitol, L-ribose, ribitol

D) D fructofuranose, D-Manitol, D-ribose, ribitol

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8. Acidic hydrolysis is minimum in

(A)

O COR

(B)

O COR

NO2 (C)

O C R

NO2

|

O

(D)

O C R

OC H2 5

|

O

SECTION II (Total Marks : 16)

(Multiple Correct Answer(s) Type)

This section contains 4 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out ofwhich ONE OR MORE may be correct.

9. The major products of following reaction sequence are :

( )

H SO2 4

1(I)

( )

LiAlH4

2 (II)

( )3

H(II)

(A) I = (B) I =

(C) III = (D) III =

10. Mg3B2 )aq(HCl

[X] + MgCl[X] + H2O

)aq(HCl[Y] + H2

Regarding [X] and [Y], the correct option/s is/are

(A) [X] is BCl3 and [Y] is H3BO3

(B) [X] is B2H6 and [Y] is H3BO3

(C) [X] on reaction with air and [Y] on strong heating (red heat) give same compound.

(D) In [Y], B attains octet by accepting OH from water

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11. Which one of the following is/are optically active?

(A) (B)

H C3

H C3 Cl

Cl

NO2

H C

3

CH3

(C) (D)

C C C= =

H C3

H H

CH3

CH3

H

H

CH3

Br

Br

12. The true statements among the following areA) Magnesium with dil. HNO3 produces hydrogen

B) Sodium nitrate on heating at 500C gives oxygen

C) Sodium carbonate liberates CO2 on heating at 100oC

D) Sodium when heated in excess of oxygen gives sodium monoxide.

SECTION-III (Total Marks : 24)

(Integer Answer Type)

This section contains 6 questions. The answer to each of the questions is a single-digit integer, ranging from 0 to9. The bubble corresponding to the correct answer is to be darkened in the ORS.

13. Amongst the following , no of molecules that are coloured due to charge transfer phenomenon are2

4CrO , 2

2 7Cr O ,

4MnO , Cu2O, ZnO, CuSO4, MnS

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14. The standard reduction potential of H2O2 is 1.776V and standard oxidation potential of H2O2 is 0.682V. The overall cell potential for disproportionation of H2O2 is almost equal to

15. Amongst the following , no of species having linear shape is

3 2 2I , ICl , BeCl , 52 6XeF , XeF , BrF , HC CH .

16. In 2HI(g) H2 (g) + I2 (g), 2 mole HI, 4 mole H2 and 4 mole of I2 are found at equilibrium. If

some hydrogen is now introduced into the container such that at equilibrium concentration of HIand I2 become equal. Unit place of number of mole of H2 added is

17. ( )3 7C H Br A gives ( )3 6C H B with alcoholic potash. (B) on oxidation gives ( )2 4 2C H O C + carbon

dioxide and water, (B) with hydrobromic acid gives (D), an isomer of (A). The difference in thepositions of Br in (A) and (D) is

18. An electron is accelerated from rest and it has wavelength of 1.41 . By how much amount potentialshould be dropped so that wavelength associated with electron becomes 1.73 .

SECTION-IV (Total Marks : 16)(Matrix-Match Type)

This section contains 2 questions. Each question has four statements (A, B, C and D) given in Column I and fivestatements (p, q, r, s and t) in Column II. Any given statement in Column I can have correct matching withONE or MORE statement(s) given in Column II. For example, if for a given question, statement B matches withthe statements given q and r, then for the particular question, against statement B, darken the bubbles

corresponding to q and r in the ORS.

19.

Column-I Column-II

(A) Acetone + CHCl3 (P) P total < PA + PB

(B) CS2 + Acetone (Q) Vmix > 0(C) Phenol and aniline (R) H

mixis not equal to 0

(D) Toluene + Benzene (S) Maximum boiling azeotropes

(T) A - B Interaction= A - A & B - B

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20. Match the reactions in column I with appropriate types of steps/reactive intermediate involved in

these reactions as given in column II.

Column-I Column-II

(A)CPBAm

(P) product contains one ring

(B)2Br

OH2

aq

NaOH

(Q) product contains two rings

(C)3 2

H C CH CH =

22ICH

etherCu/Zn

(R) product is an epoxide

(D) ( ) h2 2 23H C = CH CH CHN (S)product is a hydrocarbon

(T) A carbene (or) carbene likespecies participates

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