a. Which metal is less reactive?
Ans. Metal B is less reactive.
b. Write the names of the two metals.
Ans. Metal A is sodium & Metal B is magnesium.
c. Write the balanced chemical equation of reaction of any one metal with hydrochloric acid.
Ans. Mg(s) + 2HCl(aq) ----------> MgCl2(aq) + H2(g)