MEDIUM
9th CBSE
IMPORTANT
Earn 100

How are particles of matter affected by increasing or reducing pressure at a given temperature?

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 19
Why is it advisable to use a pressure cooker at higher altitudes for cooking food?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 20
On a hot sunny day, why do we feel pleasant sitting under a tree?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 21
Give reason. Plasma is found in the stars.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 21
Give reason: The molecules of a solid have the strongest intermolecular forces.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 21
Give reason: Out of four gases Cl2,CO2,CH4,N2. Which gas would diffuse most rapidly and why?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 22
When ice at -10°C is slowly heated, the temperature of ice gradually increases till 0°C, the temperature of the system remains constant when the ice changes into water and then further rises. Explain the observation.
HARD
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 23
Write an activity to show that the rate of diffusion of liquids decreases with an increase in the density of the liquids.
HARD
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 1 - Matter in Our Surroundings>CHAPTER EXERCISE>Q 24
Show by an activity that the gases are highly compressible as compared to liquids.