Insects belong to which phylum?

$A$ particle is projected vertically upwards from a point $A$ on the ground. It takes time $t_1$ to reach a point $B$,and it continues to move up. If it takes a further time $t_2$ to reach the ground from point $B$,then the height of point $B$ from the ground is:

In which of the following reactions is benzaldehyde formed from benzoyl chloride and hydrogen in the presence of $Pd/BaSO_4$?

The maximum amount of electrolytes and water ($70-80$ percent) from the glomerular filtrate is reabsorbed in which part of the nephron?

What is the percentage of lead in a lead pencil (in $,\%$)?

If $(2,-1,3)$ is the foot of the perpendicular drawn from the origin to the plane, then the equation of the plane is