Questions

An electron loses potential energy when it

The boundaries of the plates of the earth's crust are the weak zones known as ___________ zones.

Plaster of Paris ______.

I. changes into gypsum on mixing with water

II. is CaSO4.2H2O

III. is used for decoration

Valency of an element depends on which of the following?

I. Number of losing electron

II. Number of gaining electron

III. Number of sharing electron

____ is not a type of heat transfer.

The product of mass of a body and the acceleration produced in it equals the ___________ acting on it.

Atmosphere of Venus mostly contains which of the following gases? 

Which of the following statements is/are true or false?

Statements :

A) H2S burns in air to give H2O and SO2

B) The decomposition of Ferrous Sulphate into Fe2O3, SO2 and SO3 occurs in the presence of heat.