JEE Main 2015 Chemistry Question Paper Set 2 With Solution

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Question 1:

The number of hydroxyl group (s) in Q is

Correct Answer : 4

Question 2:

Among the following, the number of reaction (s) that produce (s) benzaldehyde is

Correct Answer : 4

Question 3:

In the complex acetybromidodicarbony lbis (triethyphosphine )iron (II),the number of Fe-C bond (s) is

Correct Answer : 3

Question 4:

Among the complex ions,

{[C o {(N H_{2} - C H_{2} - C H_{2} - N H_{2})}_{2} C I_{2}]}^{+}, {[C r C l_{2} {(C_{2} O_{4})}_{2}]}^{3 -}

{[F e {(H_{2} O)}_{4} {(O H)}_{2}]}^{+}, {[F e {(N H_{3})}_{2} {(C N)}_{4}]}^{-},

{[C o {(N H_{2} - C H_{2} - C H_{2} - N H_{2})}_{2} (N H_{3}) C I]}^{2 +}

and

{[C o {(N H_{3})}_{4} (H_{2} O) C I]}^{2 +}

,the number of complex ion(s)that show (s) cis-trans isomerism is

Correct Answer : 6

Question 5:

Three moles of

B_{2} H_{6}

are completely reacted with methanol. The number of moles of boron-containing product formed is

Correct Answer : 6

Question 6:

The molar conductivity of a solution of a weak acid HX(0.01M) is 10 times smaller than the molar conductivity of a solution of a weak acid HY (0.01M). If

λ_{x -}^{0} \approx λ_{y -}^{0},

the difference in their p

K_{a}

values ,

p K_{a} (H X) - p K_{a} (H Y)

, is (consider degree of ionization of both acids to be <<1)

Correct Answer : 3

Question 7:

A closed vessel with rigid walls contains 1 mol of

U_{92}^{238}

and 1 mol of air at 298 k.considering complete decay of

U_{92}^{238} t o P_{82}^{206} b,

the ratio of the final pressure to the initial pressure of the system at 298 K is

Correct Answer : 9

Question 8:

In dilute aqueous

H_{2} S O_{4},

the complex diaquodioxalatoferrate (II) is oxidized by

M n O_{4}^{-}

For this reaction, the ratio of the rate of change of

[H^{+}]

to the rate of change of

[M n O_{4}^{-}]

Correct Answer : 8

Question 9:

In the following reactions, the product S is

Correct Answer : A

Question 10:

The major product U in the following reactions is

Correct Answer : B

Question 11:

In the following reactions, the major product W is

Correct Answer : A

Question 12:

The correct statement (s) regarding,(i)HCIO, (ii)

H C I O_{2,}

and (iii)

H C I O_{3} a n d (i v) H C I O_{4},

is (are)

A	The number of CI=O bonds in (ii) and (iii) together is two	B	The number of lone pairs of electrons on CI (ii) and (iii) together is three
C	The hybridization of CI in (iv) is $s p^{3}$	D	Amongst (i) to (iv), the strongest acid is (i)

Correct Answer : B and C

Question 13:

The pair(s) of ions where BOTH the ions are precipitated upon passing

H_{2} S

gas in presence of dilute HCI, is (are)

A	$B a^{2 +}, Z n^{2 +}$	B	$B i^{3 +}, F e^{3 +}$
C	$C u^{2 +}, P b^{2 +}$	D	$H g^{2 +}, B i^{3 +}$

Correct Answer : C and D

Question 14:

Under hydrolytic conditions, the compounds used for preparation of liners polymer and for chain termination respectively, are

A	$C H_{3} S i C I_{3} a n d S i {(C H_{3})}_{4}$	B	${(C H_{3})}_{2} S i C I_{2} a n d {(C H_{3})}_{3} S i C I$
C	${(C H_{3})}_{2} S i C I_{2} a n d C H_{3} S i C I_{3}$	D	$S i C I_{4} a n d {(C H_{3})}_{3} S i C I$

Correct Answer : B

Question 15:

When

O_{2}

is adsorbed on a metallic surface, electron transfer occurs from the metal to

O_{2}

. The TRUE statement (s) regarding this adsorption is (are)

A	$O_{2}$ is physisorbed	B	heat is released
C	occupancy of $π_{2 p} of O_{2}$ is increased	D	bond length of $O_{2}$ is increased

Correct Answer : B, C and D

Question 16:

One mole of a monoatomic real gas satisfies the equation p(V-b)=RT where b is a constant. The relationship of interatomic potential v(r) and interatomic distance r for the gas is given by

Correct Answer : C

Question 17:

In the following reactions

Compound X is

Correct Answer : C

Question 18:

In the following reactions

The major compound Y is

Correct Answer : D

Question 19:

When 100mL of 1.0 M HCI was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure a temperature increase of

5.7 ° C

was measured for the beaker and its constant (Expt.1).because the enthalpy of a strong base is a constant

(- 57.0 k j m o l^{- 1})

,this experiment could be used to measure the calorimeter constant.In a second experiment (Expt.2),100mL of 2.0 M acetic acid (

k_{a} = 2.0 x 10^{- 5}

)was mixed with 100 mL of 1.0MNaOH(under identical conditions to Expt.1)where a temperature rise of 5.6

°

C was measured. (consider heat capacity of all solutions as 4.2

J g^{- 1} K^{- 1}

and density of all solutions as

1.0 g m L^{- 1})

Enthalpy of dissociation (in

k j m o l^{- 1})

of acetic obtained from the Expt.2 is

A	1.0	B	10.0
C	24.5	D	51.4

Correct Answer : A

Question 20:

When 100mL of 1.0 M HCI was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure a temperature increase of

5.7 ° C

was measured for the beaker and its constant (Expt.1).because the enthalpy of a strong base is a constant

(- 57.0 k j m o l^{- 1})

,this experiment could be used to measure the calorimeter constant.In a second experiment (Expt.2),100mL of 2.0 M acetic acid (

k_{a} = 2.0 x 10^{- 5}

)was mixed with 100 mL of 1.0MNaOH(under identical conditions to Expt.1)where a temperature rise of 5.6

°

C was measured. (consider heat capacity of all solutions as 4.2

J g^{- 1} K^{- 1}

and density of all solutions as

1.0 g m L^{- 1})

The pH of the solution after Expt.2 is

A	2.8	B	4.7
C	5.0	D	7.0

Correct Answer : B

JEE Main 2015 Chemistry Question Paper Set 2 With Solution

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