Mica is chemically:

1.  potassium alumino silicate having sheet structure

2.  calcium alumino silicate having fibrous structure

3.  calcium magnesium silicate having three dimensional network

4.  hydrated sodium alumino silicate having three dimensional network

The incorrect statement among the following is -

1. $\mathrm{Ge}{\left(\mathrm{OH}\right)}_2$ is amphoteric

2. ${\mathrm{GeCl}}_2$ is more stable than ${\mathrm{GeCl}}_4$

3. ${\mathrm{GeO}}_2$ is weakly acidic

4. GeCl₄ + 2HCl ⇄ H₂[GeCl₆]

Silicon carbide is used as:

${\mathrm{Mg}}_2{\mathrm{C}}_3$ has the following characteristics:

1.  It is called magnesium allylide

2.  It contains ${\mathrm{Mg}}^{2+}$ and ${\mathrm{C}}_3^{4-}$ions

3.  It on hydrolysis gives propyne

4.  All of the above

$\mathrm{CO}$ reacts with chlorine in presence of sunlight to give:

1.  ${\mathrm{COCl}}_2$

2.  ${\mathrm{CO}}_2$

3.  ${\mathrm{CCl}}_4$

4.  ${\mathrm{CHCl}}_3$

Chrome yellow is:

1.  ${\mathrm{PbCrO}}_4$

2.  ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$

3.  ${\mathrm{PbMoO}}_4$

4.  ${\mathrm{Pb}}_3{\mathrm{O}}_4$

Litharge is:

1. $\mathrm{PbO}$

2. ${\mathrm{PbO}}_2$

3. ${\mathrm{Pb}}_3{\mathrm{O}}_4$

4. $\mathrm{Pb}{\left({\mathrm{CH}}_3\mathrm{COO}\right)}_2$

Red lead is:

1.  $\mathrm{PbO}$

2.  ${{\mathrm{Pb}}_3\mathrm{O}}_4$

3.  ${\mathrm{PbO}}_2$

4.  $\mathrm{HgS}$

White lead or basic lead carbonate is:

1.  $\mathrm{Pb}{\left(\mathrm{OH}\right)}_2·2{\mathrm{PbCO}}_3$

2.  $\mathrm{Pb}{\left(\mathrm{OH}\right)}_2·\mathrm{Pb}{\left({\mathrm{CH}}_3\mathrm{COO}\right)}_2$

3.  ${\mathrm{PbCO}}_3$

4.  ${\mathrm{PbCO}}_3·\mathrm{Pb}{\left(\mathrm{OH}\right)}_2$

Hot and conc. ${\mathrm{HNO}}_3$ react with carbon to form:

1.  ${\mathrm{CO}}_2$

2.  $\mathrm{CO}$

3.  ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COOH}$

4.  ${\mathrm{NO}}_2+{\mathrm{CO}}_2$