Maximum amount of gas found in air is

Question

Accepted Answer

The correct answer to the question "Maximum amount of gas found in air is" is Option 4: nitrogen. Here is a detailed explanation supporting this answer:

1. **Explanation for Option 4 (Nitrogen):**
   - Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air by volume. This high percentage is due to nitrogen's stable diatomic molecule (N2), which does not easily react with other substances under normal atmospheric conditions. Its abundance is crucial for maintaining the balance of gases in the atmosphere and supporting life processes such as the nitrogen cycle, which is essential for plant growth and the production of proteins in living organisms.

2. **Explanation for why other options are incorrect:**
   - **Option 1 (Oxygen):** Oxygen is the second most abundant gas in the atmosphere, comprising about 21% of the air by volume. While it is essential for respiration in most living organisms and plays a critical role in combustion and various chemical reactions, its concentration is significantly lower than that of nitrogen.
   - **Option 2 (Carbon Dioxide):** Carbon dioxide is a trace gas in the atmosphere, accounting for approximately 0.04% of the air by volume. Although it is vital for photosynthesis and acts as a greenhouse gas, its concentration is much lower compared to nitrogen and oxygen.
   - **Option 3 (Hydrogen):** Hydrogen is present in the atmosphere in very minute quantities, making up less than 0.0001% of the air by volume. It is the lightest and most abundant element in the universe but is not a major component of Earth's atmosphere due to its tendency to escape into space.

In conclusion, nitrogen is the correct answer as it is the most abundant gas in the Earth's atmosphere, far surpassing the concentrations of oxygen, carbon dioxide, and hydrogen.