Question

Stains of rust from iron on cloth can be
removed by
(a) Hydrogen peroxide (b) Alcohol
(C) Oxalic acid
(d) Petrol
Cooking gas is a mixture of which of the
following two gases?
(a) Methane and Carbon dioxide
(b) Oxygen and Nitrogen
(c) Bautane and Propane
(d) Oxygen and Methane
Nameplates made of brass get discoloured in
cause of the presence of which of the​

Answer 1

Answer:

1) (a) hydrogen peroxide

2)(d) Oxygen and Methane

3)??....