Identify the correct statement regarding entropy [CBSE PMT 1998; BHU 2001]

(1) At 0°C, the entropy of a perfectly crystalline substance is taken to be zero

(2) At absolute zero of temperature, the entropy of a perfectly crystalline substance is +ve

(3) At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero

(4) At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero

Concept Videos :-

#27 | Entropy Change Estimation
#28 | Entropy Change Calculation : Case I
#31 | Condition for Spontaneity
#34 | Solved Problems
#40 | Solved Problems on Spontaneity

Concept Questions :-

Spontaneity and Entropy
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