Which gas is usually liberated when an acid reacts with a metal ? How will you test for the presence of this gas ?

Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?

Which gas is liberated when, acids react with metals ? Give one example?

Which gas is evolved when an acid reacts with metal ?

How would you test the presence of starch on leaves?

Which gas is released when acids react with carbonates-?

H_(2) gas is liberated when H_(2)O_(2) reacts with

What is the reaction of acids with metals ? How do you test the products?

The gas liberated when zinc reacts with dilute HCI is

Which substance liberates hydrogen when reacts with metals?