6(i)
State true or false for the following statements:
(a) Brass is an alloy which contains a non-metal as one of its constituents.
(b) Duralumin contains copper.
(c) Vapour density of gas is twice its molecular mass.
Show SolutionHide Solution↓
(a) False — Brass is an alloy of copper and zinc, both of which are metals; it does not contain a non-metal.
(b) True — Duralumin is an alloy of aluminium, copper, magnesium and manganese, so it contains copper.
(c) False — Vapour density is half the molecular mass (Molecular mass = 2 × Vapour density), not twice it.