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# A non-metal A is an important constituent of our food and forms two oxides B and C. Oxide B is toxic whereas C causes global warming

**(a)** Identify A, B and C

**(b)** To which Group of Periodic Table does A belong?

(a) The non-metal A which is an important constituent of our food and most of the fuels around us is carbon (C). When one atom of carbon combines with one atom of oxygen, carbon monoxide (CO), a poisonous gas is formed. When one atom of carbon combines with two atoms of oxygen, carbon dioxide (CO2) is formed which causes global warming.

Therefore, A is carbon (C); B is carbon monoxide (CO); C is carbon dioxide (CO2).

(b) Element A (Carbon) belongs to group 14 of the periodic table.

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