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प्रश्न
A jumbled word is given here. Write the correct form of the word.
CHARREGE
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उत्तर
RECHARGE
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संबंधित प्रश्न
What are the main causes of water pollution ? How can it be controlled ?
Water has ...................... density and .................. volume at 4°C.
Give one word for the following statement:
A mixture of common salt and ice .
Describe the water-cycle in nature.
Give any three important uses of water.
Explain how the peculiar variation of density of water with temperature can cause water— pipes to burst in very cold places.
What do you mean by water pollution ?
Give balanced chemical equations to show the reaction between Coke and steam.
Why is water considered a compound?
What causes the violence associated with torrential rain?
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
Explain why:
Fused CaCl2 or conc. H2SO4 is used in a desiccator.
What are stalgmites and stalactites? How are they formed?
Define ‘eutrophication’.
Give a reason for the following:
A crusty ‘boiler scale’ is formed in boilers, when hard water is used.
Name the process which is responsible for the formation of droplets on the surface of a glass of cold drink. _______
Around 97% of water available on earth is ______ water.
Mountains helps to regulate the temperature of our earth.
What is the source of water in the following?
Wells
Why should we not throw used tea leaves into sink?
