MEDIUM
9th CBSE
IMPORTANT
Earn 100

What are the two ways in which the physical states of matter can be changed?

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Long Answer Type Questions>Q 59
Draw the ‘states of matter triangle’ to show the interconversion of states of matter.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Long Answer Type Questions>Q 59
How can the evaporation of a liquid be made faster?
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Long Answer Type Questions>Q 60

What is evaporation? State the various factors which affect evaporation.

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Long Answer Type Questions>Q 60
Why does evaporation cool a liquid?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 61
Which of the following are also considered to be the states of matter?
(i) Plasma
(ii) Platelets
(iii) BEC
(iv) BHC
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 62
One of the following does not undergo sublimation. This one is: 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 63
Which of the following process/processes release heat?
(i) condensation
(ii) vaporization
(iii) freezing
(iv) melting
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 64
If the temperature of an object is 268 K, it will be equivalent to: