A colourless organic compound X was burnt in excess air to give two colourless and odourless gases, Y and Z, as products. X does not decolorize blue bromine vapour, Y turns lime milky while Z gives a blue colour with copper (ll) tetraoxosulphate (IV). Y and Z are respectively?
A. CO2 and NH3 B. CO and NH3 C. SO2 and H2O D. CO2 and H2O E. SO2 and NH3
Correct Answer: D
Explanation
All saturated hydrocarbons are attacked by oxygen at elevated temperatures and, if oxygen is in excess, complete combustion to carbon dioxide and water occurs.
