Chemical Engineering Thermodynamics
The third law of thermodynamics states that the

Heat capacity of a crystalline solid is zero at absolute zero temperature
Heat transfer from low temperature to high temperature source is not possible without external work
Gases having same reduced properties behave similarly
None of these

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Chemical Engineering Thermodynamics
A large iceberg melts at the base, but not at the top, because of the reason that

All of these
Ice at the base contains impurities which lowers its melting point
Due to the high pressure at the base, its melting point reduces
The iceberg remains in a warmer condition at the base

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