Question

Which of the following is/are correct regarding the statement- 'air is a mixture and not a pure substance'?(a.) The amounts of gases present in air at different places varies. (b). The properties of air are the properties of its constituents. (c). The different gases present in air can be separated by the process of fractional distillation of liquid air. * 1 point only a only b only c all of the above

Answer 1

Answer:

only c.

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Answer 2

Answer:

All of the above

Explanation:

1) Air is said to be a mixture because air at different places contains different amounts of various gases.

2) Air shows the property of (a)N2 (b)O2 (c) Both (d) None of these. Air is a mixture of gases. Therefore, it will show the property of both oxygen and nitrogen present in it

3) Air can be separated into its components by means of distillation in special units. So-called air fractionating plants employ a thermal process known as cryogenic rectification to separate the individual components from one another in order to produce high-purity nitrogen, oxygen and argon in liquid and gaseous form.