When $H_2SO_4$ reacts with $PCl_5$,the obtained product$(s)$ is/are:

Concentrated $H_2SO_4$ reacts with $PCl_5$ to produce

How many total statements are correct in the following?
$(i)$ $SO_2$ - antichlor,preservative
$(ii)$ $O_3$ - Disinfectant
$(iii)$ $Cl_2$ - Antiseptic
$(iv)$ $O_2$ - used in oxy-acetylene welding
$(v)$ $PH_3$ - used in smoke screens
$(vi)$ $HNO_3$ - Pickling of stainless steel

Which of the following has $S-S$ bond?

Oxygen is more electronegative than sulphur,yet $H_2S$ is acidic in nature while $H_2O$ is neutral. This is because:

Ozone is obtained from oxygen