Advertisements
Advertisements
प्रश्न
How is aquatic life benefited by the fact that water has maximum density at 4oC?
उत्तर
The property of anomalous expansion of water enables aquatic life to exist because water freezes on the surface of the water body, but it is still liquid below the ice layer.
APPEARS IN
संबंधित प्रश्न
Give reason of Alcohol is mixed with water and is used in car radiator.
What is the smallest particle of water ? Describe it’s structure.
Name the solute, solvent & solution in the statement – ‘sodium chloride dissolves in water to give sodium chloride solution’. Define each of the terms in italics.
Explain any two environmental impacts of an ‘oil spill’.
Name the process which is responsible for the formation of droplets on the surface of a glass of cold drink. _______
Among the given options, which one is not correct for the use of large amounts of fertilisers and pesticides?
State whether the following statement is True or False. If false, write the correct statement
Ice is solid whereas snow is the semi-solid form of water.
From where do the following usually get water? In which form is water present in them?
Aquifer
Match the items of Column I with the items of Column II with reference to sewage.
Column I | Column II | ||
(a) | Inorganic impurities | (i) | phosphorus and nitrogen |
(b) | Organic impurities | (ii) | nitrates and phosphates |
(c) | Nutrients | (iii) | cholera and typhoid |
(d) | Bacteria | (iv) | pesticides and herbicides |
In which one of the following state's water is present on Earth?