Class 9 Science: Matter in Our Surroundings
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Q1 · MCQ · 1 mark
Which of the following has the strongest intermolecular forces of attraction?
Q2 · FILL · 1 mark
The process by which a liquid changes into its gaseous state below its boiling point is called ________.
Q3 · MCQ · 1 mark
At what temperature does water boil at standard atmospheric pressure?
Q4 · SHORT · 2 marks
Why do gas particles exert pressure on the walls of the container?
Q5 · MCQ · 1 mark
Which state of matter has a definite volume but no definite shape?
Q6 · FILL · 1 mark
The SI unit of temperature is ________.
Q7 · MCQ · 1 mark
Which of the following can undergo sublimation?
Q8 · SHORT · 2 marks
Define diffusion. Give one example.
Q9 · FILL · 1 mark
Liquids have fixed ________ but not a fixed shape.
Q10 · MCQ · 1 mark
The latent heat of fusion of ice is ________.