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JEE MAIN - Chemistry (2016 - 9th April Morning Slot)

1
The test to distinguish primary, secondary and tertiary amines is :
Answer
(B)
C6H5SO2Cl
2
Consider the following sequence for aspartic acid :

JEE Main 2016 (Online) 9th April Morning Slot Chemistry - Biomolecules Question 143 English
The pI (isoelectric point) of aspartic acid is :
Answer
(D)
2.77
3
The plot shows the variation of −$$ln$$ Kp versus temperature for the two reactions.

M(s) + $${1 \over 2}$$ O2(g) $$ \to $$ MO(s) and

C(s) + $${1 \over 2}$$ O2(g) $$ \to $$ CO(s)

JEE Main 2016 (Online) 9th April Morning Slot Chemistry - Thermodynamics Question 149 English
Identify the correct statement :
Answer
(B)
At T < 1200 K, the reaction

MO(s) + C(s) $$ \to $$ M(s) + CO(g) is spontaneous.
4
Bouveault-Blanc reduction reaction involves :
Answer
(B)
Reduction of an ester with Na/C2H5OH.
5
The gas evolved on heating CH3MgBr in methanol is :
Answer
(B)
Methane
6
5 L of an alkane requires 25 L of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is :
Answer
(B)
Propane
7
An organic compound contains C, H and S. The minimum molecular weight of the compound containing 8% sulphur is :

(atomic weight of S = 32 amu)
Answer
(B)
400 g mol$$-$$1
8
The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group is :
Answer
(C)
4, 4-dimethylpentene
9
Which one of the following species is stable in aqueous solution?
Answer
(D)
MnO$$_4^{2 - }$$
10
Which one of the following complexes will consume more equivalents of aqueous solution of Ag(NO3)?
Answer
(C)
[Cr(H2O)6]Cl3
11
Identify the correct trend given below : (Atomic No.=Ti : 22, Cr : 24 and Mo : 42)
Answer
(C)
$$\Delta $$o of [Cr(H2O)6]2+

< [Mo(H2O)6]2+ and

$$\Delta $$o of [Ti(H2O)6]3+ > [Ti(H2O)6]2+
12
A reaction at 1 bar is non-spontaneous at low temperature but becomes spontaneous at high temperature. Identify the correct statement about the reaction among the following :
Answer
(B)
Both $$\Delta $$H and $$\Delta $$S are positive.
13
The group of molecules having identical shape is :
Answer
(B)
ClF3 , XeOF2 , XeF$$_3^ + $$
14
The non-metal that does not exhibit positive oxidation state is :
Answer
(D)
Fluorine
15
The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below :

O3(g) + Cl$${^ \bullet }$$ (g) $$ \to $$ O2(g) + ClO$${^ \bullet }$$ (g) . . . . . .(i)

ki = 5.2 × 109 L mol−1 s−1

ClO$${^ \bullet }$$(g) + O$${^ \bullet }$$(g) $$ \to $$ O2(g) + Cl$${^ \bullet }$$ (g) . . . . . . (ii)

kii = 2.6 × 1010 L mol−1 s−1

The closest rate constant for the overall reaction O3(g) + O$${^ \bullet }$$ (g) $$ \to $$ 2 O2(g) is :
Answer
(D)
1.4 × 1020 L mol−1 s−1
16
The solubility of N2 in water at 300 K and 500 torr partial pressure is 0.01 g L−1. The solubility (in g L−1) at 750 torr partial pressure is :
Answer
(B)
0.015
17
The total number of orbitals associated with the principal quantum number 5 is :
Answer
(D)
25
18
What will occur if a block of copper metal is dropped into a beaker containing a solution of 1M ZnSO4?
Answer
(D)
No reaction will occur.
19
For the reaction,
A(g) + B(g) $$ \to $$ C(g) + D(g), $$\Delta $$Ho and $$\Delta $$So are, respectively, − 29.8 kJ mol−1 and −0.100 kJ K−1 mol−1 at 298 K. The equilibrium constant for the reaction at 298 K is :
Answer
(D)
1
20
Which intermolecular force is most responsible in allowing xenon gas to liquefy?
Answer
(C)
Instantaneous dipole - induced dipole
21
The amount of arsenic pentasulphide that can be obtained when 35.5 g arsenic acid istreated with excess H2S in the presence of conc. HCl ( assuming 100% conversion) is :
Answer
(C)
0.125 mol