Q.

In which of the following process, increase in Entropy is observed

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a

Formation of NO from N2 and O2

b

Formation of CaCO3 from CaO and  CO2

c

Formation of  NO2 from NO and O2

d

Formation of CO from ‘C’ and O2

answer is D.

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Detailed Solution

Cs+12O2g→ COgNo. of moles of gases increased. Randomness increasesnR=0.5nP=1
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In which of the following process, increase in Entropy is observed