The thermally most stable compound is:

Identify the incorrect statement among the following.

$AgNO_3$ is generally kept in colored bottles because it .......

Observe the following statements :
$I$. Bleaching powder is used in the preparation of chloroform.
$II$. Bleaching powder decomposes in the presence of $CoCl_2$ to liberate $O_2$.
$III$. Aqueous $KHF_2$ is used in the preparation of fluorine.
The correct combination is :

In the halogen group,fluorine has the highest electronegativity according to the Pauling scale,yet its electron gain enthalpy is less negative than that of chlorine. This is because ....

Which one of the following pairs of substances when mixed,produces chlorine gas at room temperature?