If 1.4 g of calcium oxide is formed by the complete decomposition of calcium carbonate, then the amount of calcium carbonate taken and the amount of carbon dioxide formed will be respectively:

The law of conservation of mass was given by:

The element having atomicity ‘four’ is most likely to be:

The law of constant proportions was given by:

The law of constant phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively: