1
Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are correct
- Both Statement I and Statement II are incorrect
- Statement I is correct but Statement II is incorrect
- Statement I is incorrect but Statement II is correct
Answer
(4) Statement I is incorrect but Statement II is correct
Solution
Statement I: As per NCERT, it is the electrostatic precipitator that has electrode wires maintained at several thousand volts; they produce a corona that releases electrons which attach to the dust particles and give them a net negative charge. A scrubber sprays water or lime on the exhaust to remove gases like SO2. Incorrect.
Statement II: A scrubber removes gases, not fine particulate matter, whereas an electrostatic precipitator removes over 99 per cent of the particulate matter in the exhaust of a thermal power plant. Correct.
Answer: (4)
Out of syllabusNEET (UG) 2022