Environment

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
Select the correct answer using the code given below:

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:

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?
1. They can accumulate in the environment and contaminate water and soil.
2. They can enter the food chains.
3. They can trigger the production of free radicals.
Select the correct answer using the code given belowBrominated

Brominated flame retardants are used in many household products like mattresses and
upholstery. Why is there some concern about their use?
1. They are highly resistant to degradation in the environment.
2. They are able to accumulate in humans and animals.
Select the correct answer using the code given below:

Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
Select the correct answer using the code given below.

Due to improper/indiscriminate disposal of old and used computers or their parts, which of the
following are released into the environment as e-waste?
(1). Beryllium
(2). Cadmium
(3). Chromium
(4). Heptachlor
(5). Mercury
(6). Lead
(7). Plutonium
Select the correct answer using the codes given below.