What gas is evolved when dilute hydrochloric acid is added to iron sulphide and heated? What is its odour?

When dilute hydrochloric acid is added to iron fillings

What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.

Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H_(3) SO_(4) .

What happens when dil. Hydrochloric acid is added to iron filing ? Choose the correct answer.

What happens when Boric acid is added to water ?

What happens if hydrochloric acid and caustic soda are added ?

Which gas is evolved when an acid reacts with metal ?

When acid is added to water, what type of reaction is it ?

What happens when nitric acid is added to egg shell?