To a solution of an unknown compound, a little dilute tetraoxosulphate (VI) acid was added with some freshly prepared iron (II) tetraoxosulphate (VI) solution. The brown ring observed after the addition of a stream of concentrated tetraoxosulphate (VI) acid confirmed the presence of?
A compound gives an orange-red color to non-luminous flame. This compound is likely to contain?
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).
Compound X is?
When dilute hydrochloric acid is added to iron(ll)sulphide, the gas evolved will?
Which of the following tests would confirm-unequivocally that a solution X contain the sulphate ion if it gives with?
