When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved which is utilized 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 diulte solution of strong acid (like hydrochloric acid HCI), it forms salt and hydrogen gas is evolved which is used in hydrogenation of oil
`Zn+2HClrarrZnCl_(2)+H_(2)uparrow`
To test the pressence of `H_(2)` gas when a burning spinter is brought near the mouth of the test tube , the gas burns with a pop sound.