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

Assume each reaction is carried out in an open container. For which reaction will $$\Delta $$H = $$\Delta $$E ?

2CO_(g) + O_2(g) $$ \to $$ 2CO_2(g)

H_2(g) + Br_2(g) $$ \to $$ 2HBr_(g)

C_(s) + 2H₂O_(g) $$ \to $$ 2H_2(g) + CO_2(g)

PCl_5(g) $$ \to $$ PCl_3(g) + Cl_2(g)

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

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

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