QJEEAdv78Chb8e0: JEE Advanced 1978 Chemistry - Class 11 JEEAdv78Chb8e0 Solution: One gram of an alloy of aluminium and magnetism when treated…

One gram of an alloy of aluminium and magnetism when treated with excess of dil. HCl forms magnesium chloride, aluminium chloride and hydrogen. The evolved hydrogen, collected over mercury at $$0^{o}C$$ has a volume of 1.20 litres at 0.92 atm. pressure. Calculate the composition of the alloy. [H = 1, Mg = 24, Al = 27]