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.

Explanation

When zinc reacts with dilute solution of strong acid, it forms salt and hydrogen gas is evolved.
`Zn + 2HCl rarr ZnCl_(2) + H_(2)`
When a burning splinter is brougth near the mouth of the test tube, the gas burns with a pop sound.