What is a Furnace? Draw reverberatory furnace and label its parts.

Observe the following table.

Identify the substances which are to be present in P, Q, R positions.

$2\mathrm{Al} + 2{\mathrm{Fe}}_2{\mathrm{O}}_3\to {\mathrm{Al}}_2{\mathrm{O}}_3+2\mathrm{Fe}$

($\mathrm{Al}=27\mathrm{u}, \mathrm{Fe}=56\mathrm{u}, \mathrm{O}=16\mathrm{u}$ are the atomic masses)

How much of Iron, we can get if 54 kg of Aluminium is used?

$2\underset{\mathrm{s}}{\mathrm{PbO}} + \underset{\mathrm{s}}{\mathrm{C}} \to 2\underset{\mathrm{s}}{\mathrm{Pb}} + 2\underset{\mathrm{g}}{{\mathrm{CO}}_2}$

Which of the following statements are correct for the above chemical reaction?

(i) Lead is reduced.

(ii) Carbon di oxide is oxidised.

(iii) Carbon is oxidised.

(iv) Lead oxide is reduced