Looking for classes? Ksquare Career Institute, Bengaluru →
Match List-I (substances) with List-II (processes) employed in the manufacture of the substances and select the correct option.
Column I
- a. Sulphuric acid
- b. Steel
- c. Sodium hydroxide
- d. Ammonia
Column II
- i. Haber's Process
- ii. Bessemer's Process
- iii. Leblanc Process
- iv. Contact Process
Correct answer: a → iv, b → ii, c → iii, d → i
Detailed Solution
Sulphuric acid is manufactured by the Contact process: $SO_2$ is oxidised to $SO_3$ over $V_2O_5$, which is absorbed in $H_2SO_4$ to give oleum.
Steel is made from pig iron by Bessemer's process, in which air is blown through the molten iron to oxidise the impurities.
Sodium hydroxide was obtained through the Leblanc process (sodium carbonate from the Leblanc process is causticised with lime to give NaOH).
Ammonia is manufactured by Haber's process: $N_2 + 3H_2 \rightleftharpoons 2NH_3$ over an iron catalyst.
Correct match: a-iv, b-ii, c-iii, d-i.
Steel is made from pig iron by Bessemer's process, in which air is blown through the molten iron to oxidise the impurities.
Sodium hydroxide was obtained through the Leblanc process (sodium carbonate from the Leblanc process is causticised with lime to give NaOH).
Ammonia is manufactured by Haber's process: $N_2 + 3H_2 \rightleftharpoons 2NH_3$ over an iron catalyst.
Correct match: a-iv, b-ii, c-iii, d-i.