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KVPY SA Exam 2011 Question Paper
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© examsnet.com
Question : 35
Total: 80
An isolated box. equally partitioned contains two ideal gases A and B as shown
When the partition is removed, the gases mix. The changes in enthalpy (ΔH) and entropy (ΔS) in the process, respectively, are
zero, positive
zero, negative
positive, zero
negative, zero
Validate
Solution:
According to KTG
Force of attraction and repulsion amongst molecules of ideal gas are negligible
So, ∆H = 0
and randomness increases due to increase in volume so ∆S = +ve.
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