Which is an irreversible procees ?
(A) Mixing of two gases by diffusion
(B) Evaporation of water at 373 K and 1 atm pressure
(C) Dissolution of `NaCl` in water
(D) Burning of coal
the correct answer

Classify the following processes as reversible or irreversible : Evaporation of water at 373 K and 1 atm pressure.

For a molar solution of NaCl in water at 25^(@)C and 1 atm pressure shows that:

Which of the following is not a physical change ? (a) Boiling of water to give water vapour (b) Melting of ice to give water (c) Dissolution of salt in water (d) Combustion of liquefied Petroleum Gas (LPG).

Work done in vaporization of 1 mole of water at 373K against a pressure of 1 atm.is approximately. Assume ideal gas behavior

During which of the following processes, does entropy decrease ? (A)Freezing of water to ice at 0^(@)C (B) Freezing of water to ice at -10^(@)C (C ) N_(2)(g)+3H_(2)(g) to 2NH_(3)(g) (D) Adsorption of CO(g) on lead surface. (E ) Dissolution of NaCl in water Choose the correct answer from the options given below:

Which of the following is (arc) an endothermic process ( cs)? (a) Dilution of sulphuric acid (b) Sublimation of dry ice (c) Condensation of water vapours (d) Evaporation of water

Which among the following changes are exothermic or endothermic in nature? (a) Decomposition of ferrous sulphate (b) Dilution of sulphuric acid (c) Dissolution of sodium hydroxide in water (d) Dissolution of ammonium chloride in water

Which among the following changes are exothermic or endothermic in nature? (a) Decomposition of ferrous sulphate (b) Dilution of sulphuric acid (c) Dissolution of sodium hydroxide in water (d) Dissolution of ammonium chloride in water