Lime Water is turned milky by:

When pH of rain water is less than ____, it is called acid rain

The chemical used for destroying fungi in water tank is

The pH value of Milk of Magnesia is approximately

The reaction between an acid and a base to give a salt and water is known as a ______________ reaction.

An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into the blue. This gas produces white flame with hydrogen chloride. This unknown gas is –