The most abundant rare gas in the atmosphere is

The most abundant rare gas in the atmosphere is

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1) The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is

2) The most abundant rare gas in the atmosphere is

3) The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

4) What are the number of moles of CO2 which contains 16 g of oxygen?

5) The monomer of polythene is