An acid must contain mainly one atom which reacts with the metal to produce a gas.

The coil in a heater is made of

Gold is used to make jewelery?

In which state of matter, the distance between the molecules is minimum ?

Neutron was discovered -

Substances that have a sour taste and which makes a solution of blue litmus red are called?

______fibre is used in making bullet proof vests.

A catalyst is a substance that_________ the velocity of a chemical reaction.