Water is said to be 'hard' if it

Alkanes

Which of the following electrodes is used in electrolysis of bauxite (Al2O3) in molten cryolite?

An aqueous solution of a metal salt, M, gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also give...

Sodium hydroxide (NaOH) pellets are

At S. T. P how many litres of hydrogen can be obtained from the reaction of 500 cm3 of 0.5 M H 2SO 4 with excess zinc metal? (Gram molecular volume of H2 = 2...

A piece of sea shell, when dropped into a dilute solution of hydrochloric acid, produces a colourless, odourless gas which turns clear limewater milky. The s...

The function of conc. H2SO4 in the esterification of ethanoic acid with ethanol is to

Nitrogen can best be obtained from a mixture over oxygen and nitrogen by passing the mixture over