A metal is treated with dilute sulphuric acid. The gas evolved is collected by the method shown in the figure:

(i) Name the gas
(ii) Is the gas soluble or insoluble in water?
(iii) Is the gas lighter or heavier than air?
(iv) How will you test the gas
(v) IF the metal used above in zinc then write the chemical equation for the evolution of gas
(vi) Write one industrial use of the gas evolved.

Explanation

(i) Hydrogen gas
(ii) Is soluble in water
(iii) Gas is lighter than air.
(iv) Test for `H_2` gas: Bring a burning matchstick near the gas jar. It burns with a pop sound.
(v) `Zn(s)+H_2SO_4(dil) to ZnSO_4(aq)+H_2(g) uparrow`
(vi) Liquid hydrogen is used as a fuel in rockets.