1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following molecules has the maximum dipole moment ?
A
CO2
B
CH4
C
NH3
D
NF3
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
For a given exothermic reaction, Kp and K'p are the equilibrium constants at temperatures T1 and T2, respectively. Assuming that heat of reaction is constant in temperature range between T1 and T2, it is readily observed that
A
Kp > K'p
B
Kp < K'p
C
Kp = K'p
D
Kp = $${1 \over {k{'_p}}}$$
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
For the reaction, $${X_2}{O_{4\left( l \right)}}\,\, \to \,\,2X{O_{2(g)}}$$

$$\Delta $$U = 2.1 kcal, $$\Delta $$S = 20 cal K$$-$$1 at 300 K

Hence, G is
A
2.7 kcal
B
$$-$$ 2.7 kcal
C
9.3 kcal
D
$$-$$ 9.3 kcal
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
For the reversible reaction,
N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g) + heat

The equilibrium shifts in forward direction
A
by increasing the concentration of NH3(g)
B
by decreasing the pressure
C
by decreasing the concentrations of N2(g) and H2(g)
D
by increasing pressure and decreasiing temperature.