Entropy of a crystalline solid decrease, when the temperature is raised from 0K to 300K

True

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False

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Solution

The correct option is B
False

According to third law of Thermodynamics,

"At absolute zero, the entropy of a perfectly crystalline substance is taken as zero”.

Now, you must be thinking

$Δ S = \frac{d q_{r e v}}{T}$

As we increase temp, $Δ S$ will decrease.

Therefore, entropy decreases.

No, here we are talking about the entropy change and not entropy.

Actually as we increase the temperature, the particles will start to oscillate more and will become more disordered.

Therefore, entropy increases

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I

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