The atmosphere of Saturn containswhich one of the following gas in large quantity?

1. A

   Sulphur dioxide

   Option (a) claims that sulphur dioxide is found in large quantity in the atmosphere of Saturn. However, sulphur dioxide is not a primary component of Saturn's atmosphere.

2. B

   Carbon monoxide

   Option (b) claims that carbon monoxide is present in large quantities. Carbon monoxide is found only in trace amounts in the gas giant's atmosphere.

3. C

   Methane

   Option (c) claims that methane is present in large quantity in the atmosphere of Saturn. Along with hydrogen and helium, methane exists in significant amounts, making this the correct option.

4. D

   Nitrogen

   Option (d) claims that nitrogen is the gas found in large quantity. While nitrogen compounds exist, nitrogen is not the primary abundant gas compared to hydrocarbons like methane.

Summary. Official key is (c) … The atmosphere of Saturn is predominantly composed of hydrogen and helium, but among the given choices, methane is present in significant quantities. Sulphur dioxide, carbon monoxide, and nitrogen do not constitute the major portion of Saturn's gaseous envelope. Careful observation of planetary atmospheric compositions helps distinguish trace gases from dominant hydrocarbons. Therefore, option (c) is the correct answer.