environmentquiz14

1. Carbon dioxide 
2. Carbon monoxide 
3. Nitrogen dioxide 
4. Sulphur dioxide 
5. Methane 

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1. The decomposition of human waste in the bio-toilets is initiated by a fungal inoculum. 
2. Ammonia and water vapour are the only end products in this decomposition which are released into the atmosphere. 

Which of the statements given above is/are correct?

1. Fly ash can be used in the production of bricks for building construction. 
2. Fly ash can be used as a replacement for some of the Portland cement contents of concrete. 
3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. 

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1. Oxides of sulphur 
2. Oxide of nitrogen 
3. Carbon monoxide 
4. Carbon dioxide 

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1. They are highly resistant to degradation in the environment. 
2. They are able to accumulate in humans and animals. 

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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. 

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1. Beryllium 
2. Cadmium 
3. Chromium 
4. Heptachlor 
5. Mercury 
6. Lead 
7. Plutonium 

Select the correct answer using the codes given below.

1. Arsenic 
2. Sorbitol 
3. Fluoride 
4. Formaldehyde 
5. Uranium 

Select the correct answer using the codes given below.