Question

Given below are two statements:
Statement I: In a scrubber, exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II: Particular matter (PM 2.5) can not be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below: 

• A. Both statement I and Statement II are correct
• B. Both statement I and Statement II are incorrect
• C. Statement I is correct but statement II is incorrect
• D. Statement I is incorrect but statement II is correct

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Industrial units use various technologies like scrubbers and Electrostatic Precipitators (ESPs) to reduce air pollution.
Detailed Explanation:
- Statement I: Incorrect. This describes an Electrostatic Precipitator, which uses high voltage wires to charge particles. A scrubber removes gases (like \(SO_{2}\)) by passing the exhaust through a spray of water or lime.
- Statement II: Correct. Very fine particulate matter (PM 2.5) is extremely difficult to remove. While a standard ESP can remove 99% of particulate matter, scrubbers are primarily for gaseous pollutants. Standard air pollution control devices often fail to trap PM 2.5 effectively, though a high-efficiency ESP is better suited than a scrubber.
Step 2: Final Answer:
Statement I is false and Statement II is true.