$SO_2$ is a strong reducing agent; however,it can also act as an oxidising agent. Which of the following shows its oxidising nature?

What is formed by the reaction of phosphorus pentachloride with concentrated sulfuric acid?

Identify the correct order of thermal stability of hydrides of $16$ group elements from the following.

The oxoacid of sulphur which contains two sulphur atoms in different oxidation states is

Choose the correct statements from the following:
$A$. All group $16$ elements form oxides of general formula $EO_2$ and $EO_3$ where $E=S, Se, Te$ and $Po$. Both the types of oxides are acidic in nature.
$B$. $TeO_2$ is an oxidising agent while $SO_2$ is reducing in nature.
$C$. The reducing property decreases from $H_2S$ to $H_2Te$ down the group.
$D$. The ozone molecule contains six lone pairs of electrons.
Choose the correct answer from the options given below:

Sodium thiosulphate is formed when