NEET 2020 Phase 1 | Thermodynamics Question 15 | Chemistry

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

Hydrolysis of sucrose is given by the following reaction.
Sucrose + H₂O ⇌ Glucose + Fructose
If the equilibrium constant (K_c) is 2 $$ \times $$ 10¹³ at 800 K, the value of $$\Delta r{G^\Theta }$$ at the same temperature will be :

8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$

8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(3 \times {10^{13}})$$

$$ - $$ 8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(4 \times {10^{13}})$$

-8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

For the reaction, 2Cl(g) $$ \to $$ Cl₂(g), the correct option is :

$${\Delta _r}H > 0$$ and $${\Delta _r}S < 0$$

$${\Delta _r}H < 0$$ and $${\Delta _r}S > 0$$

$${\Delta _r}H < 0$$ and $${\Delta _r}S < 0$$

$${\Delta _r}H > 0$$ and $${\Delta _r}S > 0$$

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The correct option for free expansion of an ideal gas under adiabatic condition is :

q = 0, $$\Delta $$ T < 0 and w > 0

q < 0, $$\Delta $$ T = 0 and w = 0

q > 0, $$\Delta $$ T > 0 and w > 0

q = 0, $$\Delta $$ T = 0 and w = 0

NEET 2019

MCQ (Single Correct Answer)

-1

In which case change in entropy is negative?

Sublimation of solid to gas

2H(g) $$ \to $$ H₂(g)

Evaporation of water

Expansion of a gas at temperature

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