Which of the following is most suitable for summer? (a) Cotton(b) Nylon(c) Polyester(d) Silk.

Under which of the following conditions we can boil water at room temperature? At low pressure(b) At high pressure (c) At very high pressure(d) At atmospheric pressure

Which of the following has heighest kinetic energy? (a) Particles of ice at 0 °C(b) Particles of water at 0 °C (c) Particles of water at 100 °C(d) Particles of steam at 100 °C

Which of the following is not endothermic process? (a) Fusion(b) Vapourisation (c) Temperature(d) Insoluble heavy impurities

Which of the following does not affect rate of evaporation? (a) Wind speed(b) Surface area (c) Temperature(d) Insoluble heavy impurities

CO2 can be easily liquified and even solidified because (a) It has weak forces of attraction (b) It has comparatively more force of attraction than other gases (c) It has more intermolecular space (d) It is pre