Sea weed is employed as a source of manufacture of

Artificial smoke screens are made by

Aqueous solution of which of the following acids cannot be kept in a bottle of glass?

State the occurrence of group-$17$ elements.

Consider the following statements about the oxides of halogens:
$A$. At room temperature, $OF_2$ is thermally stable.
$B$. Order of stability of oxides of halogens is $I > Br > Cl$.
$C$. $I_2O_5$ is used in the estimation of $CO$.
$D$. $ClO_2$ is used as a bleaching agent.
The correct statements are:

The correct order of bond dissociation enthalpy of halogens is: