Q.
A non-metal ‘X’ occurs in nature in free state. It combines with hydrogen to form a gas, which is colourless and highly toxic. Apart from this, ‘X’ is oxidized to ‘XO2’ which is a colourless, pungent and irritating gas. ‘X’ represents :
[A] Sulphur
[B] Carbon
[C] Phosphorus
[D] Nitrogen
Answer & Explanation
Answer: Sulphur