Ch 8 Science Class 9 MCQ. We covered all the Ch 8 Science Class 9 MCQ in this post for free so that you can practice well for the exam.
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Ch 8 Science Class 9 Objective MCQ for Students
Oil spreads on the water’s surface because
A) Oil is denser than water
B) Oil is less dense than water
C) Surface tension of oil is more than water
D) Surface tension of oil is less than water
Option d – Surface tension of oil is less than water
The tendency of a liquid drop to contract and occupy a minimum area is due to
A) Surface tension
B) Viscosity
C) Density
D) Vapour pressure
Option a – Surface tension
The most important property of nanomaterial is
A) Force
B) Friction
C) Pressure
D) Temperature
Option b – Friction
The spherical form of the raindrop is due to
A) Density of liquid
B) Surface tension
C) Atmospheric pressure
D) Gravitational force
Option b – Surface tension
The raindrops are spherical because
A) They fall from a big height
B) The air has resistance
C) The water has a surface tension
D) None of the above
Option c – The water has a surface tension
We covered all the ch 8 science class 9 mcq above in this post for free so that you can practice well for the exam.
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