Statement-1: Among chalcogens, tendency of catenation is maximum for sulphur. 

Statement-2: $\mathrm{S}-\mathrm{S}$ single bond is stronger than $\mathrm{O}-\mathrm{O}$single bond.

The propensity for catenation typically declines across the Oxygen family. However, because oxygen molecules in the group are smaller than sulphur molecules, there is a greater lone pair repulsion, which makes the bonds more unstable and reduces the energy required for bond dissociation.
Sulfur, however, has larger atoms and no lone pair repulsion, which results in a high bond dissociation energy.