Question

By putting a few pieces of zinc in a test tube and mixing X substance in it makes Y gas The following are X and Y.
(1) Acid and sulfur dioxide gas.
(2) Base and Carbon dioxide gas.
(3) Acid and hydrogen gas.
(4) Base and oxygen gas.
please give the answer only in options not in long way​

Answer 1

Explanation:

• Zinc is a melting metal of group $12$ and it is the most widely used and essential element.
• So a “$x$” substance is added to zinc and “$y$” gas is produced.
• If an acid or base is reacted with zinc, hydrogen gas is produced.
• If zinc reacts with acid it produces hydrogen gas.
• So the equation of reaction  is :
• $Zn(s)+2HCl(aq)- > ZnCl2(aq)+H2(g)$
• The acid reacted is hydrochloric acid and the gas formed is hydrogen gas.