HARD
9th Manipur Board
IMPORTANT
Earn 100

Give reason;

A gas exerts pressure on the walls of the container.

Important Questions on Nature of Matter

MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these:>Q 1
Why is heat energy is needed to melt a solid?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these:>Q 2
Why is the temperature remains the same when ice is melted even though we supply heat continuously?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these:>Q 3
Steam and boiling water has the same temperature. But steam cause more severe burns than boiling water. Why?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these:>Q 4
For any substance, why does the temperature remain constant during the change of state?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these>Q 1
What is sublimation? Name two substances that undergo sublimation.
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these>Q 2
Name one property that is shown by ammonium chloride but not by sodium chloride.
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these>Q 3
Explain why naphthalene balls kept inside our cupboard disappear over a period of time?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 1 - Nature of Matter>Let us answer these>Q 1
What is dry ice? Why it is so called?