Question

Which among these is not a greenhouse gas?

• A. Water vapour
• B. Carbon-dioxide
• C. Hydrogen
• D. Ozone

Hint:

Greenhouse gases play a major role in climate change by trapping heat in the atmosphere. Understanding them helps in addressing global warming.

Answer 1

The Correct Option is C

Step 1: Understanding greenhouse gases.
Greenhouse gases are gases that trap heat in the Earth's atmosphere, contributing to the greenhouse effect. Common greenhouse gases include carbon dioxide (CO₂), methane (CH₄), water vapour (H₂O), and ozone (O₃).

Step 2: Analyzing the options.
(A) Water vapour: Water vapour is a greenhouse gas.
(B) Carbon-dioxide: Carbon-dioxide is a major greenhouse gas.
(C) Hydrogen: Correct — Hydrogen is not considered a greenhouse gas.
(D) Ozone: Ozone is a greenhouse gas that exists in the Earth's atmosphere.

Step 3: Conclusion.
The correct answer is (C) Hydrogen, as it is not a greenhouse gas.