MEDIUM
9th CBSE
IMPORTANT
Earn 100

Why does temperature remain constant during melting and boiling? 

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>TEST PAPER>Q 6
Why is ice at 273 K more effective in cooling than water at the same temperature?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>TEST PAPER>Q 7
Define latent heat of vapourisation of water and give its value.
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>TEST PAPER>Q 8
Why do we wear cotton clothes in summer? 
MEDIUM
9th CBSE
IMPORTANT
LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>TEST PAPER>Q 9
Why is it that wet clothes dry quickly in the sun than in the shade?