Nitrogen gas is absorbed by which of the following substances at high temperature to form a cyanamide derivative?

State True or False for the following statements:
$(1)$ Fullerene has $20$ rings of $6$ members and $12$ rings of $5$ members.
$(2)$ $CO$ is neutral while $CO_2$ is acidic.
$(3)$ Boron fibres are used in making light composite material for aircraft.
$(4)$ When borax is heated in a Bunsen burner flame with $CoO$ on a loop of platinum wire,a yellow coloured $Co(BO_2)_2$ bead is formed.

Assertion : Silicones are hydrophobic in nature.
Reason : $Si-O-Si$ linkages are moisture sensitive.

Write the general and empirical formula of silicone.

Which of the following is used for making optical instruments?

In $P_4O_{10}$,the number of oxygen atoms attached to each phosphorus atom is