Chemistry Past Questions and Answers

A colourless, odourless liquid T, gives effervesce with sodium trioxocarbonate (IV) and a white precipitate with silver trioxonitrate (V) solution T is mose probably

When sodium hydroxide solution is added to a solution of zinc salt, the white precipitate fromed redissolves in excess sodium hydroxide because

Which of the following on burning in air contributes to acid rain?

If 20 cm<sup style='font-size: smaller;'>3</sup> of distilled water is added to 80 cm<sup style='font-size: smaller;'>3</sup> of 0.50 mol dm<sup style='font-size: smaller;'>-3</sup> hydrochloric acid, the concentration of the acid will change to

Biotechnology is applied in the following except