Water — CHEMISTRY STD 6 — Question

Natrium is the Latin name of ………………..

Exhaled air contains _______________ carbon dioxide than the inhaled air. [less/more]

When a gas is cooled, its molecules ………………. Energy

(clay,sand)
River water contains ____________ and fine particles of sand.

Water boils at ______.

Boiling kills most of the ______ in the water.

____________ latrines can control water pollution caused by human beings in the open fields.

If potassium nitrate is added to water in a beaker to give a homogeneous mixture, then potassium nitrate is referred to as the __________, water as the __________, and the homogeneous mixture as the _______.(solution/ solute/solvent/saturated solution)

The process of transferring the clear liquid layer above the solid particles which settle at the bottom of the container is known as ___________.

At _____________ point the substance occurs into both solid and liquid state.