Which of the following statements is incorrect regarding zeolites?

Identify the incorrect statement about silica $(SiO_2)$.

Which of the following organosilicon compounds on hydrolysis will give a three-dimensional silicone?

Give reasons:
$(i)$ Conc. $HNO_3$ can be transported in aluminium container.
$(ii)$ $A$ mixture of dilute $NaOH$ and aluminium pieces is used to open drain.
$(iii)$ Graphite is used as lubricant.
$(iv)$ Diamond is used as an abrasive.
$(v)$ Aluminium alloys are used to make aircraft body.
$(vi)$ Aluminium utensils should not be kept in water overnight.
$(vii)$ Aluminium wire is used to make transmission cables.

$Si_3O_9^{-6}$ (having three tetrahedral units) is represented as:

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.