Chemical Engineering Thermodynamics
If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will

Decrease
Increase
Increase or decrease ; depends on the particular reaction
Remain unaltered

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

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

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