Class 9 Science: Matter in Our Surroundings

Question 1

Which of the following is a characteristic of matter?

Accepted Answer

It occupies space and has mass

Question 2

The process by which a solid converts directly to gas without becoming liquid is called:

Accepted Answer

Sublimation

Question 3

At which temperature does water boil at standard atmospheric pressure?

Accepted Answer

100°C

Question 4

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid