Assertion (A): Carbon dioxide, Methane and Nitrous oxide are considered greenhouse gases.
Reason (R): Greenhouse gas absorbs short-wave radiation from the sun and is transparent to long-wave radiation from Earth.
Choose the correct answer:
The question involves two statements: one is an assertion (A), and the other is a reason (R). Here's the examination of each:
- Assertion (A): Carbon dioxide (CO2), Methane (CH4), and Nitrous oxide (N2O) are considered greenhouse gases.
- This statement is correct. Greenhouse gases are known for their ability to trap heat in the atmosphere, thereby contributing to the greenhouse effect. CO2, CH4, and N2O are well-known greenhouse gases as they trap long-wave radiation (infrared) emitted from Earth's surface.
- Reason (R): Greenhouse gas absorbs short-wave radiation from the sun and is transparent to long-wave radiation from Earth.
- This statement is incorrect. In reality, greenhouse gases are transparent to short-wave radiation from the sun and trap long-wave radiation emitted by the Earth. The statement confuses the nature of these gases. They allow sunlight (short-wave radiation) to pass through the atmosphere but trap the heat radiated back from the Earth's surface (long-wave radiation).
Now, let's evaluate the options:
- A and R are both correct, and R is the correct explanation of A: This is incorrect because R is not correct.
- A and R are both correct, and R is NOT the correct explanation of A: This is incorrect because R is not correct.
- A is correct, but R is NOT correct: This is the correct option because the assertion (A) is true, while the reason (R) is false.
- A is NOT correct, but R is correct: This is incorrect because A is correct.
Thus, the correct answer is: "A is correct, but R is NOT correct."
Important Questions from Climate Change
- "Dendro climatology" deals with:
- Which of the following missions cover the National Action Plan on Climatic Change (NAPCC)?
i. National Solar Mission
ii. National Mission for a Green India
iii. National Green Hydrogen Mission
iv. National Mission on Sustainable Habitat
v. National Bio-Fuel Mission
Select the correct answer using the code given below: - Consider the following statements:
Statement 1: Climate change is influenced by both natural and anthropogenic factors.
Statement 2: The Amazon rainforest is often referred to as the "lungs of the Earth".
Statement 3: Current extinction rates are comparable to historical background rates.
Statement 4: Urbanization can negatively impact local biodiversity.
The correct statement/s is/are: What is the correct increasing order of Global Warming Potential of Following Green House Gases?
I. Methane
II. Fluorinated Gases
III. Carbon dioxide
IV. Nitrous Oxide
Select the correct answer using the codes given below:Consider the following statements regarding Carbon Pricing:
I. Carbon pricing is a policy tool that puts a financial cost on greenhouse gas emissions, primarily methane
II. It works by making emitters pay for the environmental damage caused by their pollution, encouraging them to reduce emissions
Which of the statements given above is/are correct?
