Question

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.​

Answer 1

Answer:

(a) Air is said to be Homogeneous mixture of different gases because it contains different gases like Nitrogen ,oxygen, carbon dioxide, argon, etc. This is said to be homogeneous mixture because the constituent cannot be distinguished unlike heterogeneous mixture.

(b) Water is capable of dissolving a variety of different substances, which is why it is such a good solvent. And, water is called the "universal solvent" because it dissolves more substances than any other liquid.

(c) It is said that there is no alternative to water for cleaning purposes. Water is provided by nature. Water is available in abundance.So as there is more water on Earth we use water for cleaning purposes. We do not use other substances because some substances are very expensive and some substances are very scare .

Hope you find the answer helpful.

Answer 2

Answer:

air is an homogeneous because components of air completely mixed with each other

water is called universal solvent because

water can dissolve more than any other liquid

water is most available liquid on earth thats why there is no alternative of it in cleaning purposes