Question

43. Which of the following is a serious environmental problem?

• A. Smoke from vehicles
• B. Fertilizers
• C. Use of CNG
• D. Use of LPG

Answer 1

The correct option is A

Smoke from vehicles

Explanation of correct option:

(A) Smoke from vehicles:

• Vehicles emit carbon monoxide, carbon dioxide, and other greenhouse gases.
• These greenhouse gases trap heat in the atmosphere and increase the temperature and it is the major cause of global warming.

Explanation of incorrect option:

(B) Fertilizers:

• Plants absorb the fertilizers through the soil and polluted the soil and water.
• By reducing the usage of fertilizers, we can reduce or control soil and water pollution.

(C) Use of CNG:

• It is a cleaner fuel than petrol.
• It emits less amount of carbon monoxide, carbon dioxide, and nitrogen dioxide compared to petrol which in turn reduces pollution.

(D) Use of LPG:

• It is a clean fuel and does not produce smoke while burnt.
• It emits less amount of carbon monoxide and methane.

Conclusion: Hence, option (A) is correct.