A gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equations of the reaction involved.

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.

Write balance equation for the reaction taking place when:

Write the balanced chemical equation for the following reactions. sodium + water

A water soluble compound 'X' of sodium on reacting with dil. H_2SO_4 released a colourless gas accompanied by brisk effervescence. When the gas was passed through water, the solution obtained turned blue litmus solution red. On bubling the gas through lime water, it initially became milky and the milkness disappeared when the gas was passed in excess. Identify the substance 'X' and write the chemical equation for the reactions involved.

Which gas is evolved when concentrated HCl is added to powdered potassium dichromate. On passing the evolved gas through acidified KBr solution, the solution turns brown. Write the balanced equations for the reactions involved.

Metal compound A reacts with dilute hydrochloric acid to produce effervescence the gas evolved exinguishes a burning candle write a balanced chemical equation for the reaction if one the compunds formed is calcium chloride.

On heating ammonium dichromate, the gas evolved is