Question

E. Tick the most appropriate answer:

4. When red lead oxide is heated strongly, it forms lead monoxide and oxygen gas. The colour of lead monoxide is

• A. yellow
• B. white
• C. red
• D. blue

Answer 1

The correct option is A

yellow

• When red lead oxide is heated strongly, it forms yellow coloured lead monoxide and gives off oxygen gas.
• $\underset{\mathrm{Red}\mathrm{lead}\mathrm{oxide}\mathrm{Lead}\mathrm{monoxide}\mathrm{Oxygen}}{2{\mathrm{Pb}}_3{\mathrm{O}}_4(\mathrm{red}\mathrm{colour})\stackrel{\mathrm{heat}}{\to }6\mathrm{PbO}(\mathrm{yellow}\mathrm{colour})+{\mathrm{O}}_2}$
• Hence, Option (B) is the correct answer.