Air and Atmosphere — CHEMISTRY STD 6 — Question

The constituents of a mixture can be separated by simple physical means.

If ‘X’ g. of solute is added to 100 g. of water at t°C and the solution formed is a saturated solution, then ‘X’ g. is the solubility of the solute.

Only pure oxygen can causes rusting in iron

We can get water from a mixture of salt and water by sedimentation.

Metals can be polished.

Plastic is a good substitute of woods.

Alum is commonly used for removing suspended impurities

Air can be separated from water by filtration.

On heating a liquid, its particles start to move faster.

Marble is formed by the metamorphosis of sandstone.