Consider two chemical reactions (A) and (B) that take place during metallurgical process: (A) ZnCO 3 s ⟶ Δ ZnO s + CO 2 g (B) 2 ZnS s + 3 O 2 g ⟶ Δ 2 ZnO s + 2 SO 2 g The correct option of names given to them respectively is:

(A) is calcination and (B) is roasting

Both (A) and (B) are producing same product so both are roasting

Both (A) and (B) are producing same product so both are calcination

(A) is roasting and (B) is calcination

EASY

Earn 100

Calcination process remove the volatile impurities.

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Important Questions on Metallurgy

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Given below are two statements:
Statement I: In the metallurgy process,sulphide ore is converted to oxide before reduction.
Statement II: Oxide ores in general are easier to reduce.
In the light of the above statements, choose the most appropriate answer from the options given below:

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Giving examples, differentiate between roasting and calcination.

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Answer the following question :

Write one point of difference between calcination and roasting.

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

In the extraction of copper from its sulphide ore, metal is finally obtained by the oxidation of cuprous sulphide with:

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Consider two chemical reactions (A) and (B) that
take place during metallurgical process:
(A)

{ZnCO}_{3 (s)} \overset{Δ}{⟶} {ZnO}_{(s)} + {CO}_{2 (g)}

(B)

2 {ZnS}_{(s)} + 3 O_{2 (g)} \overset{Δ}{⟶} 2 {ZnO}_{(s)} + 2 {SO}_{2 (g)}

The correct option of names given to them respectively is:

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Extraction of copper by smelting uses silica as an additive to remove.

HARD

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Differentiate between 'Roasting' and 'Calcination'

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Explain calcination and roasting with examples.

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

What are roasting and calcinations? Explain with a chemical equation of each.

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Define roasting of ores. For what type of ores is it used?

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Which of the following reactions is an example of calcination process?

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

The process that involves the removal of sulphur from the ores is :

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

The pair that does not require calcination is

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Consider the following statements:

Roasting is carried out to:

$1$ . Convert sulphide into oxide.

$2$ . Melt the ore.

$3$ . Remove moisture, the water of hydration, and expel organic matter.

$4$ . Remove sulphur and arsenic in the form of volatile oxides.

Out of these statements:

EASY

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Calcination is used in metallurgy for removal of

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Calcination is the process in which

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Extraction for zinc from zinc blende is achived by

MEDIUM

Chemistry>Inorganic Chemistry>Metallurgy>Extraction of Crude Metal

Represent the union of two sets by Venn diagram for each of the following.