To neutralise 20 ml of M/10 sodium hydroxide, the volume of M/20 hydrochloric acid required is

To neutralise 20 ml of M/10 NaOH the volume of M/20 HCl needed is :

Excess of carbon dioxide is passed through 50 mL of 0.5 M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N hydrochloric acid. The volume of hydrochloric acid required is (Atomic mass of calcium = 40)

Excess of carbon dioxide is passed through 50 mL of 0.5 M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N hydrochloric acid. The volume of hydrochloric acid required is

Mark'T' if the statement is true and 'F' if the false Sodium hydroxide and hydrochloric acid neutralise each other and from salt and water.