Litharge is:

1. $\mathrm{PbO}$

2. ${\mathrm{PbO}}_2$

3. ${\mathrm{Pb}}_3{\mathrm{O}}_4$

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

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.  ${\mathrm{NO}}_2+{\mathrm{CO}}_2$

${\mathrm{R}}_3\mathrm{SiCl}$ on complete hydrolysis forms:

1.  ${\mathrm{R}}_3\mathrm{SiOH}$

2.  ${\mathrm{R}}_3\mathrm{Si}—\mathrm{O}—{\mathrm{SiR}}_3$

3.  ${\mathrm{R}}_3\mathrm{Si}=\mathrm{O}$

4.  None of the above.

Pyrosilicate ion is:

1.  ${\mathrm{SiO}}_2^{2-}$

2.  ${\mathrm{SiO}}_4^{2-}$

3.  ${\mathrm{Si}}_2{\mathrm{O}}_7^{6-}$

4.  ${\mathrm{Si}}_2{\mathrm{O}}_6^{7-}$

Semi water gas is a mixture of:

1.  water gas and producer gas

2.  water gas and ${\mathrm{CO}}_2$

3.  producer gas and ${\mathrm{CO}}_2$

4.  producer gas and oil gas

Butter of tin is:

1.  ${\mathrm{SnCl}}_2·5{\mathrm{H}}_2\mathrm{O}$

2.  ${\mathrm{SnCl}}_4·5{\mathrm{H}}_2\mathrm{O}$

3.  ${\mathrm{SnBr}}_2·2{\mathrm{H}}_2\mathrm{O}$

4.  ${\mathrm{SnBr}}_4·5{\mathrm{H}}_2\mathrm{O}$

Ordinary glass is:

1.  sodium silicate

2.  copper silicate

3.  calcium silicate

4.  a mixture of calcium and sodium silicates with silica

Synthesis gas is a mixture of:

1.  steam and carbon monoxide

2.  carbon monoxide and nitrogen

3.  hydrogen and carbon monoxide

4.  hydrogen and methane

The substance used to impart green colour to glass is:

1.  ${\mathrm{Cu}}_2\mathrm{O}$

2.  $\mathrm{CdS}$

3.  ${\mathrm{MnO}}_2$

4.  ${\mathrm{Cr}}_2{\mathrm{O}}_3$