Matter in our surroundings_IX

Which of the following statement is not true regarding the characteristic of matter?

• Particles of a matter are randomly moving in all directions.

• Kinetic energy of the particles increases with a rise in temperature

• Kinetic energy of the particles of all maters remains the same at a particular temperature.

• Particles of matter diffuse into each other on their own.

During summer, water kept in an earthen pot becomes cool because of the phenomenon of:

• diffusion

• transpiration

• osmosis

• evaporation

A few substances are arranged in the increasing order of 'forces of attraction'between their particles.Which one of the following represents a correct arrangement?

• Water,air,wind

• Air,sugar,oil

• Oxygen,water,sugar

• Sugar,juice,air

Shivam visited an LPG unit and found that the gas can be liquified at specific conditions of temperature and pressure. Help him to identify the correct set of conditions.

• High temperature and high pressure.

• Low temperature and low pressure.

• Low temperature and high pressure.

• High temperature and low pressure.

Which of the following undergoes sublimation?

• Sodium chloride

• Potassium chloride

• Ammonium sulphate

• Ammonium chloride

Statement 1: Latent heat of vaporisation is the heat energy required to change 1 kg of a liquid to gas at its boiling point.

Statement 2: Latent heat of fusion is the amount of heat energy required to change 1 kg of solid into liquid at its melting point.

• Both Statement 1 and 2 are correct

• Both Statement 1 and 2 are incorrect

• only Statement 1 is correct

• only Statement 2 is correct

NTSE SAT PYQ

• A-iv, B-iii, C-ii, D-i

• A-iv, B-ii, C-i, D-iii

• A-iv, B-ii, C-iii, D-i

• A-iv, B-i, C-iii, D-ii

The random or zig-zag movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium is known as

• Ziggly motion

• Wiggly motion

• Brownian motion

• Newtonian motion

Which of the following statements is incorrect for state of matter?

• The force of attraction between the gas particles is very less.

• Plasma consists of super energetic and super excited particles.

• The plasma glows with a special color depending on the nature of the gas.

• Bose- Einstein condensate is formed by heating a gas of extremely low density.

Which of the following commonly show sublimation?

• Naphthalene balls

• Dry ice

• Iodine

• All of these