EASY
9th CBSE
IMPORTANT
Earn 100

Convert 100°C to Kelvin scale.

Important Questions on Matter in Our Surroundings

EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 45
Why does water have high boiling point than alcohol? At what temperature in Kelvin, it can be changed into solid state and into vapours? 
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 46
Name the term used for: solid directly formed from the gas.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 46
Name the term used for: gas directly formed from the solid
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 46
Ice at 0°C is more effective in cooling than water at 0°C. Give reason. 
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 47
Show experimentally that matter is made up of small particles. 
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 48
Describe by experiment the relationship between rate of diffusion and density of liquid.
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 49
How is melting point related to intermolecular forces of attraction? Why is latent heat of vapourisation higher than latent heat of fusion? 
MEDIUM
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 1 - Matter in Our Surroundings>ASSESS YOURSELF>Q 50
Show by an experiment that by increasing the temperature, substance can be changed into liquid and then into vapours.