Question

4. Frequency of collisions is maximum in:
(a) Solids
(b) Liquids
(c) Gases
5. Sodium reacts with water to liberate ......... gas.
(a) Oxygen (b) Hydrogen (c) Nitrogen
(d) Chlorine​

Answer 1

Frequency of collisions is maximum in Gases.

Sodium reacts with water to liberate Hydrogen gas.

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