Name the gas liberated when calcium carbide react with water.

Name the gas liberated when an acid reacts with metallic carbonate. Write the chemical equation of the reaction when this gas is passed through lime water. What is the colour of the precipitate obtained in this reaction ?

(i) Name the gas which is liberated when an acid reacts with a metal. How will you test the presence of the gas. (ii) Write the chemical equations for the reaction for zinc metal with : (a) Hydrogen acid and (b) Sodium hydroxide Write the chemical name of salt obtained in each case.

Name the gas usually liberated when a dilute acid reacts with a metal. What happens when a burning candle is brought near this gas?

Name the gas liberated when zinc reacts with dil. HNO_(3)

Beryllium carbide reacts with water to give :