Lewis acids among the following are
(i) $CC{l}_4$ (ii) $SiC{l}_4$ (iii) $Ge{F}_4$

Q.

Which among the following is/are liquid(s) at room temperature?​
I) Oil​
II) Rain drops​
III) Hydrogen inside balloons​

A. Only I​
B. Only II
C. Both I and II​
D. Both II and III​

Q. Fractional values of oxidation numbers are possible as in $\underset{I}{N{a}_2{S}_4{O}_6},\underset{II}{F{e}_3{O}_4},\underset{III}{N_{3}H}$

Q. The correct order spin-only magnetic moments of the following complexes is:
$\left(I\right)\left[Cr\right(H_{2}O{)}_6]B{r}_2$
$\left(II\right)N{a}_4\left[Fe\right(CN{)}_6]$
$\left(III\right)N{a}_3\left[Fe\right(C_2{O}_4{)}_3\left]\right({\Delta }_0>P)$
$\left(IV\right)\left(E{t}_{4}N{)}_2\right[CoC{l}_4]$

Q. The decreasing order of acidity of the following compounds is:

Q.

If N is selected in GROUP I, who must be selected in GROUP II?

I) M II) P III)S IV) R