Zinc granules react with dilute hydrochloric acid to form zinc chloride and hydrogen.

Do you think it is a displacement reaction? Give reasons.

Write the balanced chemical equation for each of the following reaction and also identify the type of chemical reaction taking place:

Zinc carbonate$\to$Zinc oxide $+$ Carbon dioxide

Write the balanced chemical equation for each of the following reaction and also identify the type of chemical reaction taking place:

Sodium hydroxide $+$Sulphuric acid$\to$ Sodium sulphate $+$ water

Write the balanced chemical equation for each of the following reaction and also identify the type of chemical reaction taking place:

Potassium bromide$+$barium iodide$\to$potassium iodide$+$barium bromide

Burn a magnesium ribbon using a spirit lamp and observe the changes.

(i) Was it a combination reaction?

(ii) Is oxidation or reduction taking place?

(iii) Is it exothermic?

Identify which substance is getting oxidized and which substance is being reduced in the following reaction.

$\mathrm{CuO}+{\mathrm{H}}_2\to \mathrm{Cu}+{\mathrm{H}}_2\mathrm{O}$