Question

Nitrogen concentration in the atmosphere is:

• A. 78%
• B. 50%
• C. 20%
• D. 55%

Hint:

Atmosphere composition:
N\(_2\): 78%.
O\(_2\): 21%.
Others: 1%.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
The atmosphere is composed of various gases.
Nitrogen is the most abundant gas.

Step 2: Key Formula or Approach:
No specific formula.
Need to know the composition of the atmosphere.

Step 3: Detailed Explanation:
Nitrogen constitutes about 78% of the atmosphere.
Oxygen is about 21%.
Other gases make up the remaining 1%.
Thus, nitrogen concentration is 78%.

Step 4: Final Answer:
Nitrogen concentration in the atmosphere is 78%.
Hence, the correct option is (A).