The weight of white precipitate obtained when 0.1 mole of acetylene gas is passed through ammoniacal silver nitrate solution is
120g
24g
10.8g
54g
1 mole of C2H2 (26g) gives 240g of silver acetalide 0.1 mole of C2H2 gives ?
A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is