The correct statement(s) regarding Lead compounds is/are:

1. Lead (II) reacts with Cl₂ to give PbCl₄

2. Lead (IV) chloride is highly stable towards heat.

3. Lead is not known to form an iodide, PbI₄

4. Both (1) and (3)

The incorrect statement regarding diamond and graphite is-

Incorrect statement among the following options is :

Consider the two ways of resonance in ${\mathrm{HCO}}_3^{-}$

The correct way(s) is/are-

1. Only a is correct

2. Only b is correct

3. Both a and b are correct

4. None of the above

${\mathrm{BF}}_3+\mathrm{LiH}\to \mathrm{X}+6\mathrm{LiF}$
$\mathrm{NaH}<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{B}}_2{\mathrm{H}}_6\to \mathrm{Y}$

X and Y in the above reaction are-

$1.<mspace\; width="1em"></mspace>\mathrm{X}=<mspace\; width="1em"></mspace>{\mathrm{B}}_2{\mathrm{H}}_6<mspace\; width="1em"></mspace>;<mspace\; width="1em"></mspace>\mathrm{Y}<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>\mathrm{Na}\left[{\mathrm{BH}}_4\right]$
$2.<mspace\; width="1em"></mspace>\mathrm{X}<mspace\; width="1em"></mspace>={\mathrm{BH}}_3<mspace\; width="1em"></mspace>;<mspace\; width="1em"></mspace>\mathrm{Y}<mspace\; width="1em"></mspace>={\mathrm{Na}}_3\mathrm{B}$
$3.<mspace\; width="1em"></mspace>\mathrm{X}=<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>{\mathrm{B}}_2{\mathrm{H}}_6<mspace\; width="1em"></mspace>;<mspace\; width="1em"></mspace>\mathrm{Y}<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>{\mathrm{Na}}_3\mathrm{B}$
$4.<mspace\; width="1em"></mspace>\mathrm{None}<mspace\; width="1em"></mspace>\mathrm{of}<mspace\; width="1em"></mspace>\mathrm{the}<mspace\; width="1em"></mspace>\mathrm{above}$

Consider the following statements

Identify the correct statement(s):

1. Only iii

2. i, ii

3. ii, iii

4. Only ii

The incorrect statement among the following about silicone is-

The complex formed on reaction of Sodium hexafluoroaluminate(III) with BF₃ is -

1. $\mathrm{Na}\left[{\mathrm{BF}}_4\right]$

2. ${\mathrm{Na}}_2\left[{\mathrm{BF}}_4\right]$

3. $\mathrm{Na}{\left[{\mathrm{BF}}_4\right]}_2$

4. None of the above 

Aluminum trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF because:

The correct statement(s) among the following options is/are: