MATTER GRADE 8

The quantity of matter present in an object is called its:

• Weight

• Gram

• Mass

• Density

At higher altitudes:

• Boiling point of a liquid decreases

• Boiling point of a liquid increases

• No change in boiling point

• melting point of solid increases

In which phenomena water changes into water vapour below its boiling point?

• Evaporation

• Condensation

• Boiling

• No such phenomena exist

The boiling point of water on Celsius scale and kelvin scale respectively is :

• 373,273

• 0,273

• 273,373

• 100,373

when we put some crystals of potassium Permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to:

• Boiling

• Melting of potassium Permanganate crystals

• sublimation of crystals

• Diffusion

The change of a liquid into vapour is called :

• Vapourisation

• Solidification

• Sublimation

• None of these

The state of matter which has least diffusion capacity

• Gas

• solid

• liquid

• plasma

The state of matter which has maximum kinetic energy

• Gas

• Liquid

• solid

• vacumm

the force of attraction between different molecules is called as

• cohesive force

• Electrostatic force

• Adhesive force

• None of these

When heat energy is supplied,the kinetic energy of the molecules

• Decreases

• increases

• First increases and then decreases

• Remains same