Entropy is a measure of disorder. For perfect, crystalline substances at the coldest, imaginable temperature known as the zero degrees absolute, it is said that entropy becomes:

Constant

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Zero

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Very low

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Minus

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Solution

The correct option is A Zero
The entropy of a pure crystal is zero at absolute zero.
The entropy of a substance (i.e, the extent of its dispersal of energy at a given temperature) varies with temperature of the substance. The lower the temperature, the lower the entropy.

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Similar questions

Assertion(A): At absolute zero the entropy of a perfectly crystalline substance is taken as zero

Reason(R): At zero degree absolute the constituent particles become completely motionless

Entropy of a perfect crystalline solid at absolute zero is:

(S^{⊖})

1

According to third law of Thermodynamics, "At absolute zero, the entropy of a perfectly crystalline substance is taken as zero”.

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