1
JEE Advanced 2016 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-0
Paragraph
Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equations:
X2 (g) $$\leftrightharpoons$$ 2X (g)
The standard reaction Gibbs energy, $$\Delta _rG^o$$, of this reaction is positive. At the start of the reaction, there is one mole of X2 and no X. As the reaction proceeds, the number of moles of X formed is given by $$\beta$$. Thus, $$\beta _{equilibrium}$$ is the number of moles of X formed at equilibrium. The reaction is carried out at a constant total pressure of 2 bar. Consider the gases to behave ideally. (Given R = 0.083 L bar K-1 mol-1)
Question
The INCORRECT statement among the following for this reaction, is
A
Decrease in the total pressure will result in formation of more moles of gaseous X
B
At the start of the reaction, dissociation of gaseous X2 takes place spontaneously
C
$${{\beta _{equilibrium}}}$$ = 0.7
D
Kc < 1
2
JEE Advanced 2016 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
The CORRECT statement(s) for cubic close packed (ccp) three dimensional structure is (are) :
A
The number of the nearest neighbours of an atom present in the topmost layer is 12
B
The efficiency of an atom packing is 74%
C
The number of octahedral and tetrahedral voids per atom are 1 and 2, respectively
D
The unit cell edge length is $$2 \sqrt 2$$ times the radius of the atom
3
JEE Advanced 2016 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
Mixture (s) showing positive deviation from Raoult’s law at 35oC is (are)
A
carbon tetrachloride + methanol
B
carbon disulphide + acetone
C
benzene + toluene
D
phenol + aniline
4
JEE Advanced 2016 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1
For the following electrochemical cell at 298 K
Pt(s) | H2 (g, 1 bar) | H+ (aq, 1 M) || M4+ (aq), M2+ (aq) | Pt (s)
Ecell = 0.092 V when $${{\left[ {{M^{2 + }}(aq)} \right]} \over {\left[ {{M^{4 + }}(aq)} \right]}}$$ = 10x
Give, $$E_{{M^{4 - }}/{M^{2 + }}}^o$$ = 0.151 V; 2.303 RT/F = 0.059 V

The value of x is

A
-2
B
-1
C
1
D
2
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