A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammonical silver nitrate solution. Gas evolved is

Q. A hydrocarbon gas decolourises alkaline potassium permanganate and gives precipitate with ammonical silver nitrate. The gas is :

Q. A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas Y. Identify X and Y :

Q. Which of the following compound gives silver mirror tests on treatment with ammonical silver nitrate solutions?

Q. A compound A having molecular formula $C_4{H}_{9}Br$ on reaction with alcoholic $KOH$ gives a compound B. Bromination of B gives compound C. compound C on treatment with soda lime gives a gaseous compound D. The gas D when passed through ammonical silver nitrate solution forms white precipitate. Identify A, B, C and D and write the reactions involved.

Q. A metal X on heating with nitrogen gas gives Y. Y on treatment with water gives a colourless gas which when passed through copper sulphate solution gives a blue colour then Y is :