EASY
9th CBSE
IMPORTANT
Earn 100

Why does a gas exert pressure?

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 4
What determines the state of a substance, whether it will be a solid, liquid or gas?
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 5
Define specific heat of a substance?
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 6
Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 7
Give a reason why the gas fills completely the vessel in which it is kept?
MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 8
Why do we see water droplets on the outer surface of a glass containing ice-cold water?
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 9
Why should we wear cotton clothes in summer?
MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 10
Why does a desert cooler cool better on a hot dry day?
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 1 - Matter in Our Surroundings>CHAPTER TEST>Q 11

Differentiate between solids, liquids and gases with respect to 

(a) Fluidity                               

(b) Kinetic energy

(c) Density                                 

(d) Shape

(e) Rigidity                               

 ( f) Compressibility