$A$ solution of $CrO_5$ in amyl alcohol has a $....$ colour.

Identify the incorrect statement.

Given below are two statements:
Statement $I$: The boiling points of the following hydrides of group $16$ elements increase in the order: $H_2O < H_2S < H_2Se < H_2Te$.
Statement $II$: The boiling points of these hydrides increase with an increase in molar mass.
In the light of the above statements,choose the most appropriate answer from the options given below:

The incorrect statement$(s)$ about $O_3$ is (are):

Which among the following compounds does not act as a reducing agent?

What is produced by the hydrolysis of one mole of peroxodisulfuric acid $(H_2S_2O_8)$?