Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants
from which of the following?
1. Brakes of motor vehicles
2. Engines of motor vehicles
3. Microwave stoves within homes
4. Power plants
5. Telephone lines
Select the correct answer using the code given below.
Answer:
(b)
Non-traditional
Non-traditional
The automotive industry uses ceramic or ferrite magnets to make vehicles safer. This kind of use of magnets in motor vehicles can generate magnetic particles. Hence, 1 is correct. Engines of motor vehicles can generate magnetic particles as they use high powered magnets which generate magnetic flux. Hence, 2 is correct. In Microwave, a magnetic stirrer is used which so far does not produce magnetite particles. Hence, 3 is not correct. Power plants release metal content along with ash. Use of coal in power plants is a major source of combustion-associated magnetite fine particles. Hence, 4 is correct. Telephone lines produce low frequency, low energy electromagnetic fields only. Hence, 5 is not correct. Therefore, option (b) is the correct answer.