Which one is found in higher concentration in the atmosphere ?

Options

A. Ozone
B. Nitrogen oxides
C. Carbon dioxide, nitrogen and oxygen
D. All the above

Answer

To determine which gas is found in higher concentration in the atmosphere, we can analyze the provided options step by step.

### Step 1: Identify the gases in the options
The question provides four options:
1. Ozone (O3)
2. Nitrogen oxide (NO or N2O)
3. Carbon dioxide (CO2)
4. Nitrogen and oxygen (N2 and O2)
5. All of the above

### Step 2: Examine the concentration of each gas
- **Ozone (O3)**: The concentration of ozone in the atmosphere is approximately 0.00000004%, which is extremely low.
- **Nitrogen oxide (NO or N2O)**: The concentration of nitrogen oxide is about 0.00003%, which is also very low.
- **Carbon dioxide (CO2)**: The concentration of carbon dioxide is around 0.0360%, which is higher than both ozone and nitrogen oxide.
- **Nitrogen (N2)**: Nitrogen is the most abundant gas in the atmosphere, making up about 78.08%.
- **Oxygen (O2)**: Oxygen is the second most abundant gas, constituting about 20.95%.

### Step 3: Compare the concentrations
From the concentrations analyzed:
- Ozone: 0.00000004%
- Nitrogen oxide: 0.00003%
- Carbon dioxide: 0.0360%
- Nitrogen: 78.08%
- Oxygen: 20.95%

### Step 4: Determine the highest concentration
Among all the gases listed, nitrogen has the highest concentration in the atmosphere at 78.08%. Oxygen follows at 20.95%, and carbon dioxide is next at 0.0360%. Ozone and nitrogen oxide have significantly lower concentrations.

### Step 5: Conclusion
Since the question asks which one is found in higher concentration in the atmosphere, the correct answer is **Nitrogen and Oxygen (N2 and O2)**, as they are the two most abundant gases.

### Final Answer
The correct answer is: **Nitrogen and Oxygen (N2 and O2)**.

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