Why is it said that
(a) Air is a homogeneous mixture of
various gases.
(b) Water is a universal solvent.
(c) There is no alternative to water for
cleaning purposes.
What will happen if.....
(a) The amount of water vapour in the
air increases.
(b) Only one crop is grown repeatedly
in the soil.
Answers
Answer:
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Explanation:
1) Air is a homogeneous mixture of gases as it is primarily made up of nitrogen and oxygen. Its elements are not readily separated or distinguished from one another.
2)Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. This is important to every living thing on earth. ... This allows the water molecule to become attracted to many other different types of molecules.
3)There is no alternative to water for cleaning purposes beacuse it dissolves everything that is added to it. The reason why it is called the universal solvent. ... Also, water has a neutral pH which means it does not harm the object which has to be cleaned and also does not affect the skin.
a) the amount of water vapor in the air increases, the relative humidity increases, and vice versa. ... If the water vapor content stays the same and the temperature drops, the relative humidity increases. If the water vapor content stays the same and the temperature rises, the relative humidity decreases.
b) If only one crop is grown repeatedly in the soil, it loses its fertility and gets devoid of nutrients. For this reason crop rotation is an important procedure, so that the fertility of the soil is retained and there is no loss of nutrients. ... These leguminous crops restore the fertility of soil.