Question

Match the column I with column II and mark the appropriate choice.

Column I	Column II
(A) $H_{2}S{O}_3$	+6, dibasic
(B) $H_{2}S{O}_5$	+5, dibasic
(C) $H_2{S}_2{O}_6$	+6, monobasic
(D) $H_{2}S{O}_4$	+4, dibasic

• A. (A) $\to$ (i); (B) $\to$ (ii); (C) $\to$ (iii); (D) $\to$ (iv)
• B. (A) $\to$ (ii); (B) $\to$ (iii); (C) $\to$ (i); (D) $\to$ (iv)
• C. (A) $\to$ (iii); (B) $\to$ (iv); (C) $\to$ (ii); (D) $\to$ (i)
• D. (A) $\to$ (iv); (B) $\to$ (iii); (C) $\to$ (ii); (D) $\to$ (i)

Answer 1

Answer: (D)

(A) $\to$ (iv); (B) $\to$ (iii); (C) $\to$ (ii); (D) $\to$ (i)

(A) $H_{2}S{O}_3$ - +4, dibasic because $H_{2}S{O}_3$ has 2 replacable hydrogens

(B) $H_{2}S{O}_5$ - +6, monobasic because $H_{2}S{O}_5$ has 1 replacable hydrogens

(C) $H_2{S}_2{O}_6$ - +5, dibasic ,because $H_2{S}_2{O}_6$ has 2 replacable hydrogens

(D) $H_{2}S{O}_4$ - +6, dibasic,because $H_{2}S{O}_3$ has 2 replacable hydrogens

So the correct match is (A) $\to$ (iv); (B) $\to$ (iii); (C) $\to$ (ii); (D) $\to$ (i).

Hence option D is correct.