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Entropy

Amongst the f...

Question

Amongst the following, the total number of reactions/ processes in which the entropy increases are:
a. $2 N a H C O_{3} (s) ⟶ N a_{2} C O_{3} (s) + C O_{2} (g) + H_{2} O (g)$
b. a liquid crystallises into a solid.
c. temperature of crystalline solid is raised from $z e r o K t o 100 K$ .
d. hard boiling of an egg.
e. devitrification of glass.
f. stretching of a rubber band.
g. desalination of water.
h. $N H_{3} (g, 10 a t m) ⟶ N H_{3} (g, 1 a t m)$

A

5

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B

6

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C

4

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D

3

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Solution

The correct option is C 4
Among the following, the total number of reactions/ processes in which the entropy increases are 4. They are a, c, f and h.

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