The products formed on heating Pb(NO₃)₂ are -

1. $\mathrm{PbO},<mspace\; width="1em"></mspace>{\mathrm{N}}_2,<mspace\; width="1em"></mspace>{\mathrm{O}}_2$

2. Pb(NO₂ )_2,O₂

3. $\mathrm{PbO},<mspace\; width="1em"></mspace>{\mathrm{NO}}_2,<mspace\; width="1em"></mspace>{\mathrm{O}}_2$

4. $\mathrm{Pb},<mspace\; width="1em"></mspace>{\mathrm{N}}_2,<mspace\; width="1em"></mspace>{\mathrm{O}}_2$

Mellitic acid is formed by the oxidation of graphite with -

1. Chromic acid

2. Alkaline ${\mathrm{KMnO}}_4$

3. Fuming ${\mathrm{HNO}}_3$

4. dil. ${\mathrm{HNO}}_3$

Find the most volatile compound among the following.

1.  ${\mathrm{CH}}_4$

2.  ${\mathrm{SiH}}_4$

3.  ${\mathrm{GeH}}_4$

4.  ${\mathrm{SnH}}_4$

The coordination number of Al in aluminates, is:

A mixed oxide compound among the following is :

1.  ${\mathrm{PbO}}_2$

2.  ${\mathrm{SnO}}_2$

3.  ${\mathrm{Pb}}_2{O}_3$

4.  ${\mathrm{Pb}}_3{O}_4$

Select the correct statement(s) regarding the following reaction sequence:

 
   

1.  The compound (A) is ${\left({\mathrm{CH}}_3\right)}_2{\mathrm{SiCl}}_2$

2.  The compound D is SiC

3.  The compound (B) is ${\left({\mathrm{CH}}_3\right)}_2\mathrm{Si}{\left(\mathrm{OH}\right)}_2$

4.  All of the above

A species among the following that decomposes easily is: 

A strong oxidizing agent among the following is :

1.  ${\mathrm{Tl}}^{3+}$

2.  ${\mathrm{Ga}}^{3+}$

3.  ${\ln }^{3+}$

4.  ${\mathrm{Al}}^{3+}$

From the following, the compound(s) that react(s) with \(\mathrm{BF}_3\) is/are -

Find the products formed when NaBH₄ is oxidised by I₂.