NCERT Solutions for Chapter: Matter in Our Surroundings, Exercise 5: Exercises

Give reason for the following observation:

We can get the smell of perfume sitting several metres away.

Arrange the following substances in increasing order of forces of attraction between particles- water, sugar, oxygen.

What is the physical state of water at
(a) $25°\mathrm{C}$
(b) $0°\mathrm{C}$
(c) $100°\mathrm{C}$

Give two reasons to justify-

Water at room temperature is a liquid.

Give two reasons to justify-

An iron almirah is a solid at room temperature.

Why is ice at $273$ K more effective in cooling than water at the same temperature?

What produces more severe burns, boiling water or steam?

Name A, B, C, D, E and F in the following diagram showing change in its state.