Static Quiz – 27th July 2026

1. Consider the following statements regarding Acid Rain:

It is caused by the presence of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) in the atmosphere.
It increases the pH level of soil, making it more alkaline.
It can lead to the leaching of essential nutrients from the soil.

Which of the statements given above is/are correct?

1 and 3 only

2 and 3 only

1 and 2 only

1, 2 and 3

2. Which of the following statements about Biochar is correct?

It is a synthetic fertilizer used to improve crop yield.

It is a byproduct of coal combustion and contributes to soil degradation.

It is a form of charcoal that enhances soil fertility and carbon sequestration.

It is a radioactive material found in deep-sea ecosystems.

3. With reference to the Greenhouse Effect, consider the following gases:

Which of the above gases contribute significantly to the greenhouse effect?

1, 2, and 4 only

1 and 3 only

2 and 3 only

1, 2, 3, and 4

4. Which of the following is the correct sequence of ecological succession in a barren land?

Lichens → Shrubs → Herbs → Trees

Lichens → Herbs → Shrubs → Trees

Trees → Shrubs → Herbs → Lichens

Herbs → Shrubs → Lichens → Trees

5. Consider the following statements regarding Mangrove Ecosystems:

Mangroves act as natural barriers against coastal erosion and storm surges.
They grow in freshwater regions with low salinity levels.
They help in carbon sequestration and provide habitat for diverse marine species.

Which of the statements given above is/are correct?

1 and 3 only

2 and 3 only

1 and 2 only

1, 2, and 3