1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Identify the correct statement for change of Gibb's energy for a system ($$\Delta $$Gsystem) at constant temperature and pressure.
A
If $$\Delta $$Gsystem < 0, the process is not spontaneous.
B
If $$\Delta $$Gsystem > 0, the process is spontaneous.
C
If $$\Delta $$Gsystem = 0, the system has attained equilibrium.
D
If $$\Delta $$Gsystem = 0, the system is till moving in a particular direction.
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The enthalpy and entropy change for the reaction:
Br2(l) + Cl2(g) $$ \to $$ 2BrCl(g)
are 30 kJ mol$$-$$1 and 105 J K$$-$$1 mol$$-$$1 respectively.
The temperature at which the reaction will be in equilibrium is
A
300 K
B
285.7 K
C
273 K
D
450 K
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The enthalpy of hydrogenation of cyclohexene is is $$-$$ 119.5 kJ mol$$-$$1. If resonance energy of benzene is $$-$$ 150.4 kJ mol$$-$$1, its enthalpy of hydrogenation would be
A
$$-$$ 358.5 kJ mol$$-$$1
B
$$-$$ 508.9 kJ mol$$-$$1
C
$$-$$ 208.1 kJ mol$$-$$1
D
$$-$$ 269.9 kJ mol$$-$$1
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Assume each reaction is carried out in an open container. For which reaction will $$\Delta $$H = $$\Delta $$E ?
A
2CO(g) + O2(g) $$ \to $$  2CO2(g)
B
H2(g) + Br2(g) $$ \to $$ 2HBr(g)
C
C(s) + 2H2O(g) $$ \to $$ 2H2(g) + CO2(g)
D
PCl5(g) $$ \to $$ PCl3(g) + Cl2(g)
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