Question

A compound X on heating with excess conc. sulphuric acid at 443K gives an unsaturated hydrocarbon Y. X also reacts with sodium metal to evolve a colorless gas Z. Identify X,Y, Z

Answer 1

X is the compound called Ethanol (C¬2H5OH). Ethanol is an organic compound also commonly referred to as alcohol. 

Y is a compound called Ethene (C2H4). A colourless, organic compound used for ripening fruits or making detergents etc. 

Z is the gas called hydrogen (H2). Hydrogen is a chemical element found in most abundance in the universe.