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Test Index
Class 11 NEET Chemistry Chemical Thermodynamics Questions
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Section:
Chemistry
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© examsnet.com
Question : 1
Total: 91
In which of the following processes entropy increases?
A. A liquid evaporates to vapour.
B. Temperature of a crystalline solid lowered from
130
K
to
0
K
.
C.
2
NaHCO
3
(
s
)
⟶
Na
2
CO
3
(
s
)
+
CO
2
(
g
)
+
H
2
O
(
g
)
D.
Cl
2
(
g
)
⟶
2
Cl
(
g
)
Choose the correct answer from the options given below:
[NEET 2024]
A and
C
A, B and D
A
,
C
and
D
C and D
Validate
Solution:
When a liquid evaporates to vapour entropy increases.
2
NaHCO
3
(
s
)
⟶
Na
2
CO
3
(
s
)
+
CO
2
(
g
)
+
H
2
O
(
g
)
Number of gaseous product molecules increases so entropy increases.
Cl
2
(
g
)
⟶
2
Cl
(
g
)
1 mole
Cl
2
(
g
)
form
2
mol
Cl
(
g
)
. So entropy increases.
© examsnet.com
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