What is needed to construct a rain water harvesting pit?

One Line Answer

Boulders, gravels, and Coarse sand are needed to construct a rain water harvesting pit.

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Chapter 2: Water - Try to Answer [Page 76]

Chapter 2 Water
Try to Answer | Q IV. 5. | Page 76

Name the gas produced when chlorine is dissolved in water and exposed to sunlight.

The ultimate source of all water on the earth is

A captain of ship will tell you that an iceberg is much bigger than it looks. Why is it so ?

Household detergents contain mainly ______ and pollute water bodies.

Fill in the blank:

The sample of hard water which lathers with soap after boiling and filtration contains _____.

Explain any two environmental impacts of an ‘oil spill’.

Select the correct word from the words in option to complete the sentence:

If pressure on the surface of water increases its boiling point ____ and freezing point ____.

Differentiate between the following:

Natural water and treated water

Match the following

Nitrogen is used for the treatment of drinking water.