A diatomic molecule has a dipole moment of $1.2 \mathrm{~D}$. If the bond distance is $1 \mathrm{~A}^{\circ}$, then fractional charge on each atom is _________ $\times 10^{-1}$ esu.

(Given $1 \mathrm{~D}=10^{-18}$ esucm)

The number of molecules or ions from the following, which do not have odd number of electrons are _________.

(A) NO$_2$

(B) ICl$_4^ -$

The number of bent-shaped molecule/s from the following is __________

N$_3^-$, NO$_2^-$, I, O, SO

Amongst the following, the number of oxide(s) which are paramagnetic in nature is

$\mathrm{Na}_{2} \mathrm{O}, \mathrm{KO}_{2}, \mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}, \mathrm{ClO}_{2}, \mathrm{NO}, \mathrm{SO}_{2}, \mathrm{Cl}_{2} \mathrm{O}$

A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of last fork is _________ Hz.

C₆H₁₂O₆ $\buildrel \text{Zymase} \over \longrightarrow$ A B + CHI

Number of molecules from the following which are exceptions to octet rule is _________.

$\mathrm{CO}_2, \mathrm{NO}_2, \mathrm{H}_2 \mathrm{SO}_4, \mathrm{BF}_3, \mathrm{CH}_4, \mathrm{SiF}_4, \mathrm{ClO}_2, \mathrm{PCl}_5, \mathrm{BeF}_2, \mathrm{C}_2 \mathrm{H}_6, \mathrm{CHCl}_3, \mathrm{CBr}_4$

The total number of molecular orbitals formed from $2 \mathrm{s}$ and $2 \mathrm{p}$ atomic orbitals of a diatomic molecule is __________.