Question

Which of the following interface cannot be obtained?
(a) Liquid-liquid
(b) Solid-liquid
(c) Liquid-gas
(d) Gas-gas

Answer 1

(d)Gas-Gas

because it seems that air is a mixture of many components and that they are miscible in nature

Answer 2

*⃣(d)#⃣

$\huge{\boxed{\boxed{\boxed{\mathfrak{\red{\underline{\underline{\underline{Gas-gas}}}}}}}}}$

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Gas-gas interface cannot be obtained as they are completely miscible in nature.

For example, air is a mixture of various gases such as, O2, N2, CO2, etc.

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