Prelims

‘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.

Consider the following statements:
1. Coal ash contains arsenic, lead and mercury.
2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the
environment.
3. High ash content is observed in Indian coal.
Which of the statements given above is/are correct?

Which of the following are the reasons/factors for exposure to benzene pollution?
(1) Automobile exhaust
(2) Tobacco smoke
(3) Wood burning
(4) Using varnished wooden furniture
(5) Using products made of polyurethane
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Consider the following:

1. Carbon monoxide
2. Methane
3. Ozone
4. Sulphur dioxide

Which of the above are released into atmosphere due to the burning of crop/biomass residue

Why is there a great concern about the ‘microbeads’ that are released into environment?

In India, the use of carbofuran, methyl parathion, phorate and triazophos is viewed with apprehension. These chemicals are used as

Consider the following pairs :
Commonly used / Unwanted or consumed materials controversial chemicals likely to be found in them
1. Lipstick — Lead
2. Soft drinks — Brominated vegetable oils
3. Chinese fast food — Monosodiumglutamate

Which of the pairs given above is/are correctly matched?

Which of the following are some important pollutants released by steel industry in India?
1. Oxides of sulphur
2. Oxide of nitrogen
3. Carbon monoxide
4. Carbon dioxide
Select the correct answer using the code given below: