Define the following terms.
$(i)$ Mineral $(ii)$ Ore $(iii)$ Gangue
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.
$(a)$ What will be the action of gas on
$(i)$ dry litmus paper ?
$(ii)$ moist litmus paper ?
$(b)$ Write a balanced chemical equation for the reaction taking place.
Differentiate between metal and non-metal on the basis of their chemical properties.
Food cans are coated with tin and not with zinc because
Which metals do not corrode easily ?