Unit - 1.1 Chemistry and its Importance — CHEMISTRY STD 6 — Question

From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.

The water that is fit for drinking is called ………….. water.

lthough we cannot see air, we can ___it.

Brownian movement is maximum in ____.

________ is the purest form of water. It may dissolve gases like ________forming weak acids(sea water/ lake water/rain water ; chlorine/ammonia/carbon dioxide)

Element are represented by …………..

Traces of ……………. give ruby its bright red colour.

The elements present in common salt are …………. And

The blanket of air that surrounds the earth is called the ………….

A ……….. is a naturally occurring substance which contains elements or their compounds.