Make your opinion based on your experience how the soures of fresh water become polluted.

Propose two conservation measures that could be taken to incerease the number of Indian one-horned rhino.Make your opinion based on your experiences how the sources of fresh water became polluted.

mention the ways in which water becomes polluted.

How do detergents pollute water ?

Some halogen containing compounds are useful in daily life. Some compounds of this class are responsible for exposure of flora and fauna to more and more of UV light which causes destruction to a great extent. Name the class of these halocompounds. In your opinion, what should be done to minimise harmful effects of these compounds ?

Give your opinion about how green house gad do environmental pollution.

What are the two main constituents of detergent ? How do they cause water pollution ?

Total surface area of a right circular pot open at one end is 2002 sq.cm. If the length of diameter of base of the pot is 14cm, then calculate how much litre of water may the pot contain.

How fresh water plants float on water?

Explain how Newton's corpuscular theory predicts the speed of light in a medium say water to be greater than the speed of light in vacuum. Is the prediction confirmed by experimental determination of the speed of light in water? If not which alternative picture of light is consistent with experiment ?