What is the shape of the $BrF_5$ molecule?

Which of the following pairs contains $2$ lone pairs of electrons on the central atom?

$BCl_3$ is a planar molecule while $NCl_3$ is pyramidal,because

In gaseous triethylamine,the $C-N-C$ bond angle is $.....$ degrees.

The correct order of bond angle is

The three-dimensional structure of $CH_4$ is given below. The bonds are labelled as $W, X, Y$ and $Z$. What are the bonds lying in the plane $(A)$,projecting out of the plane away from the observer $(B)$ and projecting out of the plane towards the observer $(C)$?