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Question

In the above diagram, A, B and C represent, respectively, the tropospheric concentrations of

The correct answer is
$\text{NO}, \text{NO}_2, \text{O}_3$

To solve the question, we need to identify the tropospheric concentrations of NO, NO2, and O3 as represented in the graph by lines A, B, and C.

  1. Understanding the graph: The graph shows the variation in concentration of three atmospheric components over time (measured in hours). The concentration is displayed in ppm (parts per million).
  2. Analysis of the components:
    • Line A: Typically, the concentration of NO peaks in the early morning and diminishes throughout the day. From the graph, Line A shows a pattern where it starts high at sunrise and decreases as the day progresses, consistent with typical NO behavior.
    • Line B: NO2 concentrations generally increase during daylight due to photochemical reactions involving NO and ozone. Line B shows a pattern of increase during the day, which is characteristic of NO2.
    • Line C: O3 concentration tends to rise during the day due to sunlight-driven reactions and peaks in the afternoon. Line C shows a rise in concentration during the day, peaking in the afternoon.
  3. Conclusion: Based on the expected behavior of these components, the correct representation is:
    • A: NO
    • B: NO2
    • C: O3

Therefore, the correct answer is: $\text{NO}, \text{NO}_2, \text{O}_3$.

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Important Questions from Principles Of Stratigraphy

  1. Which one of the following molecules is the most buoyant in the atmosphere?
  2. In which set of the following atmospheric layers, the temperature increases with altitude?
  3. The least abundant gas in the Earth's atmosphere is
  4. One of the following concepts is best summarized by the phrase "the present is the key to the past"
  5. Oxygen atom required to form tropospheric ozone comes from
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