MEDIUM
9th CBSE
IMPORTANT
Earn 100

The state of matter called makes a fluorescent tube (or neon sign bulb) to glow. (Solid/ Liquid / Gas / Plasma)

67.86% studentsanswered this correctly

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 24
What do you understand by the term ‘latent heat’? What are the two types of latent heat?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 25
Why is heat energy needed to melt a solid? What is this heat energy called? 
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 26
Under what conditions heat can be given to a substance without raising its temperature?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 27
Why does the temperature remain constant during the melting of ice even when the heat is supplied continuously?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 28
Why does the temperature remain constant during the boiling of water even though heat is supplied continuously?  
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 29
Explain why, ice at 0°C is more effective in cooling than water at the same temperature.
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 30
Would you cool a bucket of water more quickly by placing it on ice or by placing ice in it? Give reasons for your answer.
HARD
9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 1 - Matter in Our Surroundings>Short Answer Type Questions>Q 31

Why does steam cause more severe burns than boiling water?