Question

[5]
Q.2 Give a word equation for each of the following reactions.
1. Two solids which combine on heating, to give a liquid.
2. Two gases which combine to give a solid.
3. A compound which on heating shows - colour change from brown to yellow.
4. A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.
5. An exothermic reaction where both the reactants are gases, one of which is oxygen.
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Answer 1

Explanation:

Carbon + Sulphur → Carbon disulphide

Ammonia + Hydrogen chloride → Ammonium chloride

Lead dioxide → lead oxide + oxygen

Iron (II) chloride + ammonium hydroxide → ammonium chloride + iron (III) hydroxide

Hydrogen + Oxygen → water