Share class 9 chemistry 1 is matter in our surroundinds
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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
answer (c) It has more intermolecular space
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
(d) Particles of steam at 100 °C
Which of the following is most suitable for summer? (a) Cotton(b) Nylon(c) Polyester(d) Silk.
(a) Cotton
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
(c) At very high pressure
Which of the following is not endothermic process? (a) Fusion(b) Vapourisation (c) Temperature(d) Insoluble heavy impurities
(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
(d) Insoluble heavy impurities
