Environment Quiz 15

1. Smelting units 
2. Pens and pencils 
3. Paints 
4. Hair oils and cosmetics 

Select the correct answer using the codes given below:

1. Discharge of nutrients from the estuaries. 
2. Run-off from the land during the monsoon. 
3. Upwelling in the seas. 

Select the correct answer from the codes given below:

1. Carbon dioxide. 
2. Oxides of nitrogen. 
3. Oxides of Sulphur 

Which of the above is/are the emission/emissions from coal combustion at thermal power plants?

1. Aerosols 
2. Foam agents 
3. Fire retardants 
4. Lubricants. 

In the making of how many of the above are hydrofluorocarbons used?