Science TRUE & FALSE

Butter from curd is separated by sedimentation- False.
correct statement
Butter from curd is separated by Churning.

Air is a pure substance- False.
correct statement
Air is a mixture of gases.

Grain and husk can be separated by winnowing- True.

Strainer is a kind of sieve which is used to separate a liquid from solid- True.

When pulses are washed with water before cooking, water is separated from them by filtration- False.
correct statement
When pulses are washed with water before cooking the water is separated from them by the process of decantation.

Particles in solids are free to move- False.
correct statement
Particles of solid can not move freely (or) Particles of liquid are free to move.

Liquids have no fixed volume but have fixed shape- False.
correct statement
Liquids have fixed volumes but have no fixed shapes.

Air is not compressible- False. correct statement Air is highly compressible.