JEE Main 2015 Chemistry Question Paper Set 1 With Solution

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Question 1:

The total number of stereoisomers that can exist for M is

Correct Answer : 2

Question 2:

The number of resonance structures for N is

Correct Answer : 9

Question 3:

The total number of lone pairs of electrons in

N_{2} O_{3}

Correct Answer : 8

Question 4:

For the octahedral complexes of

F e^{3 +}

S C N^{-}

(thiocyanato-S) and in

C N^{-}

ligand environments, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer ) is [Atomic number of Fe=26]

Correct Answer : 4

Question 5:

Among the triatomic molecules/ions,

B e C I_{2}, {N_{3}}^{-}, N_{2} O, N O_{2}^{+}, O_{3} S C I_{2} I C I_{2}^{-}, I_{3}^{-} a n d X e F_{2}

,the total number of linear molecule(s)/ion(s)where the hybridization of the central atom does not have contribution from the d-orbital (s)is [Atomic nymber:S =16,CI=17,I=53 and Xe=54]

Correct Answer : 4

Question 6:

Not considering the electronic spin, the degeneracy of the second excited state (n=3) of H atom is 9 , while the degeneracy of the second excited state of

H^{-}

Correct Answer : 3

Question 7:

All the energy released from the reaction

X \to Y, ∆, G^{0} = - 193 K J m o l^{- 1}

is used for oxidizing

M^{+} a s M^{+} \to M^{3 +} + 2 e^{-}, E^{0} = - 0.25 V .

Under standard conditions ,the number of mole of

M^{+}

oxidized when one mole of X isY [F=96500 C

m o l^{- 1}

Correct Answer : 4

Question 8:

If the freezing point of a 0.01 molal aqueous solution of a cobalt(III) chloride -ammonia complex (which behaves as a strong electrolyte )is -0.0558

C_{°}

, the number of chloride (s) in [

K_{f}

of water =1.86K kg

m o l^{- 1}

]

Correct Answer : 1

Question 9:

Compounds (s) that on hydrogenation produce (s)optically inactive compound(s)is (are)

Correct Answer : B and D

Question 10:

The major product of the following reaction is

Correct Answer : A

Question 11:

In the following reaction, the major product is

Correct Answer : D

Question 12:

In the following reaction, the major product is

Correct Answer : D

Question 13:

The structure of D-(+)-glucose is

Correct Answer : A

Question 14:

The major product of the reaction is

Correct Answer : C

Question 15:

The correct statement(s) about

C r^{2 +} a n d M n^{3 +}

is (are) [Atomic number of Cr=24 and Mn=25]

A	$C r^{2 +}$ is a reducing agent	B	$M n^{3 +}$ is an oxidizing agent
C	Both $C r^{2 +} a n d M n^{3 +}$ exhibit $d^{4}$ electronic configuration	D	When $C r^{2 +}$ is used as a reducing agent, the chromium ion attains $d^{5}$ electronic configuration

Correct Answer : A,B and C

Question 16:

Copper is purified by electrolytic refining of blister copper. the correct statement(s) about this process is (are)

A	Impure Cu strip is used as the cathode	B	Acidified aqueous CuS $O_{4}$ is used as electrolyte
C	pure Cu deposits at the cathode	D	Impurities settle as anode -mud

Correct Answer : B, C and D

Question 17:

F e^{3 +}

is reduced to

F e^{2 +}

by using

A	$H_{2} O_{2}$ in presence of NaOH	B	$N a_{2} O_{2}$ in water
C	$H_{2} O_{2} i n p r e s e n c e o f H_{2} S O_{4}$	D	$N a_{2} O_{2} i n p r e s e n c e o f H_{2} S O_{4}$

Correct Answer : A and B

Question 18:

The% yield of ammonia as a function of time in the reaction

N_{2} (g) + 3 H_{2} (g) ⇌ 2 {NH}_{3} (g), ∆ H < 0

(P, T_{1})

is given below.

If this reaction is conducted at

(P, T_{2})

,with

T_{2} > T_{1},

the %yield of ammonia as a function of time is represented by

Correct Answer : B

Question 19:

If the unit cell of a mineral has cubic close-packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesium ions,m and n, respectively, are

A	$\frac{1}{2}, \frac{1}{8}$	B	$1, \frac{1}{4}$
C	$\frac{1}{2}, \frac{1}{2}$	D	$\frac{1}{4}, \frac{1}{8}$

Correct Answer : A

Question 20:

Match the thermodynamic processes given under column I with the expressions given under column II.

column I	column II
(A)Freezing of water at 273 K and 1 atm	(P) $q = 0$
(B)Expansion of 1 mol of an ideal gas into a	(Q)w=0
(C)Mixing of equal volumes of two ideal gases at constant temperature and pressure in an	(R) $∆ S_{s y s} < 0$
(D)Reversible heating of $H_{2} (g)$ at 1 atm from 300k to 600 k, followed by reversible cooling to 300 k at 1 atm	(S) $∆ U = 0$
	(T) $∆ G = 0$

A	A-Q, B-R, C-S, D-P
B	A-T, B-P, C-Q, D-R
C	A-R, B-P, C-Q, D-S
D	A-Q, B- R, C-T, D-S

Correct Answer : C

JEE Main 2015 Chemistry Question Paper Set 1 With Solution

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