What is the SI unit of young's modulus?

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 2.4.

By which property a material can be drawn into wires?

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.1.

What are the main uses of a barometer?

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.2.

State two occasions where we use a siphon.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.3.

How can you define relative density of a substance in terms of mass?

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.4.

Why the raindrops are spherical in shape?

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.5.

How does viscous force act on the layers of a fluid.? Above which velocity, the fluid motion becomes turbulent?

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.6.

State Bernoulli's theorem.

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.7.

Explain the blowing off the roofs of huts during storm.