x , y , z and G in the following processes are :- (i) P 2 O 5 + …… x .. … .. Δ Thomas slage (ii) 2 Cu 2 O + Cu 2 S Δ ……… ... + Gas ( G ) ↑ (iii) Fe 2 O 3 + 3 CO Δ …… .. z … .. + Gas ( G ′ ) ↑

x , y , z and G in the following processes are :- (i) P 2 O 5 + …… x .. … .. | TestHub

Passage / Comprehension

The common ores of iron are both iron oxides, which can be reduced to iron by heating them with carbon in the form of coke. Coke is produced by heating coal in the absence of air. Coke is inexpensive and provides both the reducing agent for the reaction and the heat source. The most commonly used iron ores are hematite, Fe₂O₃, and magnetite, Fe₃O₄.

$x, y, z$ and G in the following processes are :-

(i) $P_{2} O_{5} + \dots\dots x .. \dots .. Δ$ Thomas slage

(ii) $2 Cu_{2} O + Cu_{2} S Δ \dots\dots\dots ... + Gas (G) ↑$

(iii) $Fe_{2} O_{3} + 3 CO Δ \dots\dots .. z \dots .. + Gas (G^{'}) ↑$

Options:(select one or more)

Answer:

A, C, D

Solution:

(i) In steel making, P₂O₅ reacts with quick lime (CaO) to form Thomas slag (calcium phosphate), so x = CaO (quick lime).

(ii) In copper extraction, Cu₂O + Cu₂S → Cu (metal) + SO₂ (gas), so gas G = SO₂.

(iii) In blast furnace, Fe₂O₃ is reduced by CO to metallic iron, so z = Fe.

Hence correct statements are A, C, and D.

Chemistry - Metallurgy Question with Solution | TestHub

Options:(select one or more)

Doubts & Discussion