Nitrogen can be obtained from air by removing

Options

A. oxygen
B. hydrogen
C. carbon dioxide
D. both (1) and (2)

Explanation

To obtain nitrogen from air, we need to remove certain components that can react with nitrogen. Here’s a step-by-step solution to the question:

### Step 1: Understand the Composition of Air
Air is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases (including argon, carbon dioxide, and trace gases). The primary gases of interest in this context are nitrogen and oxygen.

**Hint:** Remember the major components of air and their approximate percentages.

### Step 2: Identify the Reactive Components
In the context of obtaining nitrogen, we need to consider which gases can react with nitrogen. The two main gases that can react with nitrogen in the air are:
- Oxygen (O₂)
- Hydrogen (H₂)

**Hint:** Think about which gases in the air can form compounds with nitrogen.

### Step 3: Determine the Removal Process
To isolate nitrogen, we need to remove the reactive gases, primarily:
- Oxygen: It can react with nitrogen to form nitrogen oxides (NO, NO₂).
- Hydrogen: It can react with nitrogen to form ammonia (NH₃).

**Hint:** Focus on the gases that can form compounds with nitrogen when considering removal.

### Step 4: Conclusion
To obtain nitrogen from air, we must remove both oxygen and hydrogen. Therefore, the answer to the question is that nitrogen can be obtained from air by removing oxygen and hydrogen.

**Final Answer:** Nitrogen can be obtained from air by removing oxygen and hydrogen.

---