Which one of the following is not considered as part of the endomembrane system?

Molten $CuCl_2$ is electrolysed using platinum electrodes. The reaction occurring at the anode is:

The statement $\sim (p \leftrightarrow \sim q)$ is

The alum used for purifying water is

The basic unit of classification for plants and animals is ....

$A$ graph of magnetic flux $(\phi)$ versus current $(I)$ is shown for four inductors $A, B, C$ and $D$. Which inductor has the largest value of self-inductance?