Subject: PollutionXSources

‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

Why is there a concern about copper smelting plants?

1.They may release lethal quantities of carbon monoxide into the environment.
2.The copper slag can cause the leaching of some heavy metals into the environment.
3.They may release sulfur dioxide as a pollutant.
Select the correct answer using the code given below:

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.

With reference to polthylene terepthalate, the use of which is so widespread in our daily lives, consider the following statements :
1. Its fibres can be blended with wool and cotton fibres to reinforce their properties
2. Containers made of it can be used to store any alcoholic beverage.
3. Bottles made of it can be recycled into other products.
4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions.

Which of the statements given above are correct?

Consider the following statements regarding mercury pollution:
1. Gold mining activity is a source of mercury pollution in the world.
2. Coal-based thermal power plants cause mercury pollution.
3. There is no known safe level of exposure to mercury.
How many of the above statements are correct?

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer products, consider the following statements:
1. PFAS are found to be widespread in drinking water, food, and food packaging materials.
2. PFAS are not easily degraded in the environment.
3. Persistent exposure to PFAS can lead to bioaccumulation in animal bodies.
Which of the statements given above are correct?

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?

Artificial way of causing rainfall to reduce air pollution makes use of: