GRADE 9 - MATTER IN OUR SURROUNDINGS

Renuka 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 remains the same

• The water level decreases

• There is little increase in water level.

Which of the following is not a characteristic of matter?

• There is no space between particles of matter

• Matter is made up of extremely small particles

• The particles of matter attract each other.

• The particles of matter are continuously moving

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

• 
  Diffusion

• 
  Evaporation

• Distillation

• Chemical reactions

What is the unit of pressure?

Melting point of ice is

• 273.16K

• 373.15K

• 100°C

• 250.18K