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General Principles and Processes of Isolation of Metals - 1 - JEE MCQ


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12 Questions MCQ Test - General Principles and Processes of Isolation of Metals - 1

General Principles and Processes of Isolation of Metals - 1 for JEE 2025 is part of JEE preparation. The General Principles and Processes of Isolation of Metals - 1 questions and answers have been prepared according to the JEE exam syllabus.The General Principles and Processes of Isolation of Metals - 1 MCQs are made for JEE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for General Principles and Processes of Isolation of Metals - 1 below.
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General Principles and Processes of Isolation of Metals - 1 - Question 1
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General Principles and Processes of Isolation of Metals - 1 - Question 2
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Main source of lead is PbS. It is converted to Pb by :

Self - reduction pocess is :

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PbS reduces PbO to Pb and SO2 is liberated. This is called as self-reduction.

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General Principles and Processes of Isolation of Metals - 1 - Question 3
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Among the following statements, the incorrect one is :

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(A) Calamine = ZnCO3 , Siderite = FeCO3

(B) Argentite = Ag2S and cuprite = Cu2O

(C) Zinc blende = ZnS, Pyrites = FeS2

(D) Malachite = CuCO3 Cu(OH)2 , Azurite = 2CuCO3 Cu(OH)2

General Principles and Processes of Isolation of Metals - 1 - Question 4
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Which of the following statement is incorrect about the extractive metallurgy of copper ?
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Most of the impurity of iron sulphide is removed in smelting process 2 FeS + 3O2 → 2FeO + 2SO2

FeO + SiO2 → FeSiO3 (slag)

General Principles and Processes of Isolation of Metals - 1 - Question 5
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General Principles and Processes of Isolation of Metals - 1 - Question 6
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General Principles and Processes of Isolation of Metals - 1 - Question 7
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General Principles and Processes of Isolation of Metals - 1 - Question 8
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Which of the following process is used in the extractive metallurgy of magnesium ?
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From salts of magnesium, magnesium can not be extracted by other chemical methods as magnesium itself acts as a reducing agent and Mg obtained at cathode during electrolysis of its salt solution, reacts with water forming Mg(OH)2.

General Principles and Processes of Isolation of Metals - 1 - Question 9
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NaCN is sometimes added in the froth flotation process as a depressant when ZnS and PbS minerals are expected because :
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ZnS + 4NaCN → Na2[Zn(CN)4] (soluble complex) + Na2S

General Principles and Processes of Isolation of Metals - 1 - Question 10
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Match the column (I) and (II) and select the correct answer using the codes given below.
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Argentite → Ag2S ; Cuprite → Cu2O ; Siderite → FeCO3 ; Carnallite → KCl. MgCl2 . 6H2O

General Principles and Processes of Isolation of Metals - 1 - Question 11
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General Principles and Processes of Isolation of Metals - 1 - Question 12
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The one that is not a carbonate ore is :
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Malachite = CuCO3. Cu(OH)2
Bauxite = Al2O3 . 2H2O or AlOx . (OH)3–2x (where D < x < 1)
Calamine = ZnCO3
Siderite = FeCO3
Ans is Bauxite option-2.

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