Aluminium chloride in acidified aqueous solution forms a complex 'A'.
The formula of A and hybridisation state of Al in 'A' is respectively:

1. [Al(H₂O)₆]³⁺, sp³d²

2. [Al(H₂O)₄]³⁺, sp³

3. [Al(H2O)4]3+, dsp2

4. [Al(H₂O)]³⁺, d²sp³

In diborane, the two H-B-H angles are nearly-

1. $60°,$ $120°$

2. $97°,120°$

3. $97°,150°$

4. $120°,$ $180°$

A compound that gives propyne on hydrolysis is -

1. ${\mathrm{Al}}_4{\mathrm{C}}_3$

2. ${\mathrm{Mg}}_2{\mathrm{C}}_3$

3. ${\mathrm{B}}_4\mathrm{C}$

4. ${\mathrm{La}}_4{\mathrm{C}}_3$

Litharge is not commonly used in:

1. Manufacture of special glasses

2. Glazing pottery

3. Preparing paints

4. Lead storage battery

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

1. $\mathrm{PbO}, {\mathrm{N}}_2, {\mathrm{O}}_2$

2. Pb(NO₂ )_2, O₂

3. $\mathrm{PbO}, {\mathrm{NO}}_2, {\mathrm{O}}_2$

4. $\mathrm{Pb}, {\mathrm{N}}_2, {\mathrm{O}}_2$

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. ${\mathrm{HNO}}_3$

The most volatile compound among the following is -

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