1) Which of the following statements is incorrect about the properties of the states of matter? a) Gases are highly incompressible b) particles of matter are continuously moving c) Solids have fixed volume and fixed shape d) Liquids have a fixed volume but no fixed shape 2) The process of conversion of solid camphor into vapours without passing through the liquid state is called a) Condensation b) Sublimation c) Fusion d) Vaporization 3) Convert a temperature of 25 0C to the Kelvin scale. a) 298 K b) 248 K c) 300 k d) 25 k 4) Burns caused by steam are more severe than those caused by boiling water at the same temperature(100 0C) because a) Steam has more kinetic energy than boiling water b) boiling water cools down instantly upon contact with skin c) Steam contains additional energy in the form of latent heat of vaporization d) Steam is a gas and penetrate the skin more easily 5) In summer,water kept in an earthen pot (matka) becomes cool because of the phenomenon of: a) Sublimation b) Diffusion c) Evaporation d) Transpiration 6) Which condition will increase the rate of evaporation of water? a) Increase in surface area b) Decrease in temperature c) Increase in humidity d) Decrease in wind speed 7) Which of the following has the weakest interparticle force of attraction? a) water at 25 0C b) Oxygen gas c) Salty water d) Ice 8) Liquefaction of petroleum gas (LPG) can be achieved by: a) High temperature,Low pressure b) High temperature ,High pressure c) Low temperature,Low pressure d) Low temperature,High pressure 9) What is the physical state of water at 100 0C and standard atmospheric pressure? a) A mixture of liquid and gas states b) Gaseous state only c) Solid state only d) Liquid state only 10) Why does the diffusion of solids into other solids occur very slowly a) The interparticle forces are very strong and the particles are closely packed b) Solids have a definite shape and volume c) The density of solids is very high. d) The particles of a solid have no kinetic energy

Based on "Matter in our surroundings"

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