MEDIUM
9th CBSE
IMPORTANT
Earn 100

Which of the following process/processes release heat?
(i) condensation
(ii) vaporization
(iii) freezing
(iv) melting

50% studentsanswered this correctly

Important Questions on Matter in Our Surroundings

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:
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 65
The boiling point of ethane is, -88 °C. This temperature will be equivalent to:
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 66
When heat is constantly supplied by a gas burner with a small flame to melt ice, then the temperature of ice during melting: 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 67
When water at 0 °C freezes to form ice at the same temperature of 0 °C, then it:
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 68
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation _____.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 69
The latent heat of fusion of ice is:  
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 70
The latent heat of vaporisation of water is:
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Multiple Choice Questions (MCQs)>Q 71
Which one of the following set of phenomena would increase on raising the temperature?