Matter in our surroundings

which of the following is matter

• air

• stone

• cloud

• all of them

when 2-3 crystals of potassium permanganate are dissolved in water, the colour of water will be

• blue

• green

• yellow

• purple pink

when 2-3 crystals of copper sulphate is added to a glass of water ,the colour developed is

• blue

• green

• red

• yellow

as the temperature rises, particles of matter move

• fast

• slow

• not effected

• none of them

intermixing of two different types of matter on their own is called:

• fusion

• diffusion

• vaporisation

• condensation

What is the full form of CNG?

• Cairo Nitro Gasoline

• Car Need Gas

• Compressed Natural Gas

• Congress Natural Gas

Seema took a 100 ml beaker and filled half the beaker with water and marked the level of water. She dissolved some salt with the help of a glass rod and recorded water level again.

• The water level increases appreciably

• The water level decreases

• The water level remains the same

• There is little increase in water level.

Which one of the following sets of phenomenon would increase on raising the temperature?

• Diffusion, evaporation and compression of gases

• Evaporation, compression of gases and solubility of solid in liquid

• Evaporation, diffusion, expansion of gases and solubility of solid in liquid

• Evaporation, solubility of gas in liquid, diffusion and compression of gases.

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.

During summer, water kept in earthen pot becomes cool due to phenomenon of

• Diffusion

• Transpiration

• Distillation

• Evaporation