Eutrophication is the process in which dissolved oxygen in water is reduced due to excessive growth of algae. This is the result of
Important Questions on Natural Resources
Match column I and column II and select the correct option from the given codes.
| Column I | Column II | ||
| (a) | Particulate matter | (i) | Chemical water pollutant |
| (b) | Heat | (ii) | Non-degradable soil pollutant |
| (c) | Detergent | (iii) | Degradable soil pollutant |
| (d) | Plastic | (iv) | Air pollutant |
| (e) | Vegetable peel | (v) | Physical water pollutant |
Soil is complex mixture. The given figure shows the percentage by volume of different soil components as and . What will you place at ?
The given figure shows a river and the types of land use on the sides of the river. The water quality of the river was studied by measuring the amounts of dissolved oxygen and ammonia in the water collected at sites and . The results are given below:
| Site | Dissolved oxygen |
Ammonia (ppm) |
Which of the following is correct regarding this?
The given graph shows changes in concentration of two substances and in river polluted by sewage. Which of the following options most appropriately identifies and ?
The given cycle represents circulation of nitrogen in the environment. Identify and in the cycle and select the correct option.
is an organic compound containing only carbon, chlorine and flourine. It has been widely used as refrigerant, propellant and solvent. Montreal protocol out manufacture of such compounds because contributes to in the atmosphere.
Which of the following would not be a consequence of ?
