Ncert Exercises & Solutions

The interface that cannot be obtained is

1. Liquid-liquid

2. Solid-liquid

3. Liquid-gas

4. Gas-gas

HINT: Gases are miscible with each other.

Explanation:

For interface formation , one substance should be in immobile or steady state. Gas-gas interface can not be obtained as they are completely miscible in nature. e.g., air is a mixture of various gases such as O₂, N₂, C₂, etc.

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