AIPMT 2006 | Thermodynamics Question 53 | Chemistry

AIPMT 2006

MCQ (Single Correct Answer)

-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

$$-$$ 358.5 kJ mol^$$-$$1

$$-$$ 508.9 kJ mol^$$-$$1

$$-$$ 208.1 kJ mol^$$-$$1

$$-$$ 269.9 kJ mol^$$-$$1

AIPMT 2006

MCQ (Single Correct Answer)

-1

The enthalpy and entropy change for the reaction:
Br_2(l) + Cl_2(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

300 K

285.7 K

273 K

450 K

AIPMT 2005

MCQ (Single Correct Answer)

-1

A reaction occurs spontaneously if

T$$\Delta $$S < $$\Delta $$H and both $$\Delta $$H and $$\Delta $$S are +ve

T$$\Delta $$S > $$\Delta $$H and $$\Delta $$H is +ve and $$\Delta $$S are $$-$$ve

T$$\Delta $$S > $$\Delta $$H and both $$\Delta $$H and $$\Delta $$S are +ve

T$$\Delta $$S = $$\Delta $$H and both $$\Delta $$H and $$\Delta $$S are +ve

AIPMT 2005

MCQ (Single Correct Answer)

-1

Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction ?

Exothermic and increasing disorder

Exothermic and decreasing disorder

Endothermic and increasing disorder

Endothermic and decreasing disorder

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