What is the correct formula for Borazole?

Discuss the pattern of variation in the oxidation states of $(i)$ $B$ to $Tl$ and $(ii)$ $C$ to $Pb$.

Which of the following compounds is formed in the borax bead test?

In moist air,$AlCl_3$ fumes because:

Which metal is protected by a layer of its own oxide?

Given below are two statements :
Statement $I$ : Gallium is used in the manufacturing of thermometers.
Statement $II$ : $A$ thermometer containing gallium is useful for measuring the freezing point $(256 \ K)$ of brine solution.
In the light of the above statement,choose the correct answer from the options given below :