1.

ΔH is positive for which of the following processes?(a) Oxidation of nitrogen(b) Melting of ice and evaporation of water(c) Oxidation of gold(d) Burning of chlorine

Answer» Correct answer is (b) Melting of ice and evaporation of water

Explanation: Enthalpy change (ΔH) is positive for endothermic reactions, the reactions which involves absorption of energy.

Melting of ice and evaporation of water involves absorption of energy.


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