Which of the following is a latex-based alkaloid?

During the electrolysis of copper sulphate aqueous solution using copper electrodes,the reaction taking place at the cathode is:

Two point charges $+8q$ and $-2q$ are located at $x = 0$ and $x = L$ respectively. The location of a point on the $x$-axis at which the net electric field due to these two point charges is zero,is

Jelly is a colloidal solution of

What is the bond angle in $ClO_2$ (OClO) (in $^{\circ}$)?

Consider the following statements $A$ and $B$ and identify the correct choice in the given answers.
$A$. Tightly bound electrons of target material scatter $X$-ray photon,resulting in the Compton effect.
$B$. Photoelectric effect takes place with free electrons.