1
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The relation between work done in reversible and irreversible process is

A
$${W_{irr}} > {W_{rev}}$$
B
$${W_{irr}} < {W_{rev}}$$
C
$${W_{irr}} = {W_{rev}}$$
D
$${W_{irr}} \ne {W_{rev}}$$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

In which of the following changes, entropy decreases?

A
Rusting of iron
B
Melting of ice
C
Vaporisation of camphor
D
Crystallisation of sucrose from solution
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The difference between heat capacity at constant pressure and heat capacity at constant volume is

A
$$R$$
B
$$\frac{R}{T}$$
C
$$\frac{R}{V}$$
D
$$1$$
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

When the expansion of a gas occurs in vacuum and at constant volume, then

A
$$\Delta U=qV$$
B
$$\Delta U=qp$$
C
$$\Delta H=qV$$
D
$$\Delta H=qp$$
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