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) ?
Name the sodium compound which is used for softening hard water.
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid ?
Write an equation to show the reaction between Plaster of Paris and water.
Fresh milk has a $pH$ of $6$. How do you think the $pH$ will change as it turns into curd ? Explain your answer.