Oxyacids Of Sulphur

Q. Peroxy acids of sulphur are:

1. $H_2{S}_2{O}_8$
2. $H_{2}S{O}_5$
3. $H_2{S}_2{O}_7$
4. $H_2{S}_2{O}_3$

Q. Identify the correct sequence of the increasing number of $\pi$ - bonds in the structures of the following molecules:-
(I) $H_2{S}_2{O}_6$ (II) $H_{2}S{O}_3$ (III) $H_2{S}_2{O}_5$

1. I > II > III
2. II <III < I
3. II > I > III
4. I> III > II

Q. What would be the sum of the number of $\pi$ − bonds in the following molecules:
$I.H_2{S}_2{O}_{6}II.H_{2}S{O}_{3}III.H_2{S}_2{O}_5$

Q. Identify the correct sequence of increasing number of $\pi$ - bonds in the structure of the following molecules.
(I) $H_2{S}_2{O}_6$ (II) $H_{2}S{O}_3$ (III) $H_2{S}_2{O}_5$

1. I, II, III
2. II, III, I
3. II, I, III
4. I, III, II

Q. $H_4{S}_2{O}_4$ is known as hyposulphurous acid and it has an $S-S$ linkage.

1. True
2. False

Q.

Which of the following does not contain a bond between two sulphur atoms?

1. Caro’s acid

2. Sodium thiosulphate

3. Elemental octasulphur

4. None of the above