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9th West Bengal Board
IMPORTANT
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Viscosity opposes the relative motion between different layers of a fluid.

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Important Questions on Matter : Structure and Properties

EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.2.
Viscosity of liquids rises with the temperature.
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.2.
It is quite safe to stand near a fast-moving train.
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.2.
Strain has no units.
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.2.
Beyond critical velocity, role of viscosity is negligible.
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.4.
What is the SI unit of thrust?
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.4.
What does a gradual rise in barometric height indicates?
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.4.
On which factor, does the action of a siphon depend on?
EASY
9th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 2.4.
What is the density of pure water in the SI system (in kg m-3)?