1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
For irreversible expansion of an ideal gas under isothermal condition, the correct option is :
A
$$\Delta$$U $$\ne$$ 0, $$\Delta$$Stotal = 0
B
$$\Delta$$U = 0, $$\Delta$$Stotal = 0
C
$$\Delta$$U $$\ne$$ 0, $$\Delta$$Stotal $$\ne$$ 0
D
$$\Delta$$U = 0, $$\Delta$$Stotal $$\ne$$ 0
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Hydrolysis of sucrose is given by the following reaction.
Sucrose + H2O ⇌ Glucose + Fructose
If the equilibrium constant (Kc) is 2 $$ \times $$ 1013 at 800 K, the value of $$\Delta r{G^\Theta }$$ at the same temperature will be :
A
8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$
B
8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(3 \times {10^{13}})$$
C
$$ - $$ 8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(4 \times {10^{13}})$$
D
-8.314 J $$mo{l^{ - 1}}{K^{ - 1}} \times 300K \times In(2 \times {10^{13}})$$
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
For the reaction, 2Cl(g) $$ \to $$ Cl2(g), the correct option is :
A
$${\Delta _r}H > 0$$ and $${\Delta _r}S < 0$$
B
$${\Delta _r}H < 0$$ and $${\Delta _r}S > 0$$
C
$${\Delta _r}H < 0$$ and $${\Delta _r}S < 0$$
D
$${\Delta _r}H > 0$$ and $${\Delta _r}S > 0$$
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct option for free expansion of an ideal gas under adiabatic condition is :
A
q = 0, $$\Delta $$ T < 0 and w > 0
B
q < 0, $$\Delta $$ T = 0 and w = 0
C
q > 0, $$\Delta $$ T > 0 and w > 0
D
q = 0, $$\Delta $$ T = 0 and w = 0
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