Question

Match the chemical reaction given in column I with the name of the gas evolved mentioned in column II and choose the correct option.

Column I	Column II
(p) CuCl2 + H2SO4	(i) H2S gas evolved
(q) Mg + HCl	(ii) H2 gas evolved
(r) NaHCO3 + HCl	(iii) CO2 gas evolved
(s) FeS + HCl	(iv) HCl gas evolved

विकल्प

• (p) - (iv), (q) - (ii), (r) - (iii), (s) - (i)

• (p) - (iii), (q) - (i), (r) - (ii), (s) - (iv)

• (p) - (iii), (q) - (i), (r) - (iv), (s) - (ii)

• (p) - (iv), (q) - (i), (r) - (iii), (s) - (ii)

Answer 1

(p) - (iv), (q) - (ii), (r) - (iii), (s) - (i)

Explanation:

Column I	Column II
(p) CuCl2 + H2SO4	(iv) HCl gas evolved
(q) Mg + HCl	(ii) H2 gas evolved
(r) NaHCO3 + HCl	(iii) CO2 gas evolved
(s) FeS + HCl	(i) H2S gas evolved