Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate) ?
Why should curd and sour substances not be kept in brass and copper vessels ?
Why do $HCl$, $HNO_3$, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character ?
Which one of the following types of medicines is used for treating indigestion ?
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid ?