Class 9 Physics · Chapter 7 · Test 1
Matter and Temperature
52 MCQs
52 questions · 40 min · 52 marks
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Sample questions
The first 5 of 52. Try each one, then tap to see the answer.
Question 1
According to kinetic molecular theory, molecules are always in:
- AMotion
- BComplete rest
- CA fixed shape
- DA fixed volume
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Answer: A
Molecules are continuously moving.
Question 2
The motion of particles in a solid is mainly:
- ARandom movement throughout the container
- BVibration about mean positions
- CFree movement over long distances
- DMovement only in straight lines
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Answer: B
Solid particles vibrate about their mean positions.
Question 3
Gas molecules generally move in:
- AFixed positions
- BCircular paths only
- CRandom motion
- DA single common direction
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Answer: C
Gas molecules move randomly in all directions.
Question 4
Intermolecular forces generally become weaker when molecules are:
- ABrought closer together
- BChanged into solids
- CMoved farther apart
- DMade stationary
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Answer: C
Intermolecular attraction generally decreases as separation increases.
Question 5
The kinetic energy of a molecule is associated with its:
- AMotion
- BChemical name
- CColour
- DShape alone
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Answer: A
Kinetic energy is energy due to motion.
More tests in Thermal Properties of Matter
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