Intext questions V — task. Science CBSE, Class 10.

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1. Why does dry \(HCl\) gas not change the colour of the dry litmus paper?

Dry \(HCl\) does not dissociate to give \(H^+\) ions.
Dry \(HCl\) does not dissociate to give \(OH^-\) ions
Dry \(HCl\) is not considered as an acid.
Dry \(HCl\) can act as both acid and base.

2. While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?

The process of dissolving an acid or a base in water is highly endothermic.
The process of dissolving an acid or a base in water gives a number of byproducts.
Dissolving an acid or a base in water forms toxic gases.
Dissolving an acid or a base in water is a highly exothermic process.

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