Naman and Raghav perform an experiment in which they mix concentrated sulphuric acid with water. Naman mixes water with acid Raghav mixes acid with water slowly with constant stirring. Mention the suitable reason for selecting the one which you find is correct mehod and discarding the one which is wrong.

Explanation

Both the dilution processes have no difference as far as the acid whichn is formed. But in this case, there is a big problem. Concentrated sulphuric sulphuric acid has a strong affinity with water and the dilution is highly exothermic. If water is added to acid for dilution, so much heat is evolved that acid is immediately converted into poisonous vapours which pollute the atmosphere. In order to avoid this, it is always better to add acid slowly to water with constant stirring. Heat is released slowly and no vapours are formed. This means that the dilution process carried by Raghav is correct.