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Q1. |
In which type of lakes, does a perfect ecological equilibrium among the producers, decomposers and consumer groups of organisms exist |
Q2. |
Which one the following units is employed for the removal of particulate matter above 50 n in size? |
Q3. |
Which of the following terms, correctly describes 'Biomagnification' ? |
Q4. |
Which one the following types of settling phenomenon can be analysed by the classic sedimentation laws of Newton and stokes ? |
Q5. |
Which of the following statements explains the term pyrolysis ? |
Q6. |
The least expensive and most suitable excreta disposal unit for rural area would be the : |