$10 \,mL$ of a solution of $NaOH$ is found to be completely neutralised by $8 \,mL$ of a given solution of $HCl$. If we take $20 \,mL$ of the same solution of $NaOH$, the amount of $HCl$ solution (the same solution as before) required to neutralise it will be ...... $mL$
$16$
$4$
$8$
$12$
Why does distilled water not conduct electricity, whereas rain water does ?
Do basic solutions also have $H^+_{(aq)}$ ions ? If yes, then why are these basic ?
Write word equations and then balanced equations for the reaction taking place when -
$(a)$ dilute sulphuric acid reacts with zinc granules.
$(b)$ dilute hydrochloric acid reacts with magnesium ribbon.
Give two important uses of washing soda and baking soda.
Write an equation to show the reaction between Plaster of Paris and water.