Isolation of Elements PYQs - Last 10 Years
JEE Main / Chemistry / Inorganic Chemistry / 105 recent questions
ChemistryInorganic Chemistry2016-2025
Practice 105 JEE Main Chemistry questions from Isolation of Elements. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2016-2025
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Last 10 Years Isolation of Elements Questions
Showing 50 of 105 filtered questions.
1Isolation Of Elements
The purification method based on the following physical transformation is :$\underset{(X)}{\text { Solid }} \xrightarrow[]{\text { Heat }} \underset{(X)}{\text { Vapour }} \xrightarrow{\text { Cool }} \underset{(X)}{\text { Solid }}$
MCQ+4 / -12025
2Isolation Of Elements
Which of the following metals can be extracted through alkali leaching technique?
MCQ+4 / -12023
3Isolation Of Elements
In Hall - Heroult process, the following is used for reducing \(\mathrm{Al}_{2} \mathrm{O}_{3}\) :-
MCQ+4 / -12023
4Isolation Of Elements
The setting time of Cement is increased by adding :
MCQ+4 / -12023
5Isolation Of Elements
The methods NOT involved in concentration of ore are
A. Liquation
B. Leaching
C. Electrolysis
D. Hydraulic washing
E. Froth floatation
Choose the correct answer from the options given below :
A. Liquation
B. Leaching
C. Electrolysis
D. Hydraulic washing
E. Froth floatation
Choose the correct answer from the options given below :
MCQ+4 / -12023
6Isolation Of Elements
Which one of the following statements is incorrect?
MCQ+4 / -12023
7Isolation Of Elements
In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:
MCQ+4 / -12023
8Isolation Of Elements
Given below are two statements:
Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode.
Statement II: During the Hall-Heroult electrolysis process, purified $\math...
Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode.
Statement II: During the Hall-Heroult electrolysis process, purified $\math...
MCQ+4 / -12023
9Isolation Of Elements
The reaction representing the Mond process for metal refining is _________.
MCQ+4 / -12023
10Isolation Of Elements
The major component of which of the following ore is sulphide based mineral?
MCQ+4 / -12023
11Isolation Of Elements
Which one of the following reactions does not occur during extraction of copper?
MCQ+4 / -12023
12Isolation Of Elements
Given below are two statements :
Statement I : In froth floatation method of rotating paddle agitates the mixture to drive air out of it.
Statement II : Iron pyrites and generally avoided for extraction of iron due to environmental reasons....
Statement I : In froth floatation method of rotating paddle agitates the mixture to drive air out of it.
Statement II : Iron pyrites and generally avoided for extraction of iron due to environmental reasons....
MCQ+4 / -12023
13Isolation Of Elements
Match List I with List II
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...
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overflow:hidden;padding:10px 5px;word-break:normal;}
...
MCQ+4 / -12023
14Isolation Of Elements
The metal which is extracted by oxidation and subsequent reduction from its ore is :
MCQ+4 / -12023
15Isolation Of Elements
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature.
Reason...
Assertion A: In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature.
Reason...
MCQ+4 / -12023
16Isolation Of Elements
Which one of the following is not an example of calcination?
MCQ+4 / -12023
17Isolation Of Elements
Which one of the following is most likely a mismatch ?
MCQ+4 / -12023
18Isolation Of Elements
Given below are two statements related to Ellingham diagram:
Statement I : Ellingham diagrams can be constructed for formation of oxides, sulfides and halides of metals.
Statement II : It consists of plots of $$\Delta_{\mathrm{f}} \mathrm{H...
Statement I : Ellingham diagrams can be constructed for formation of oxides, sulfides and halides of metals.
Statement II : It consists of plots of $$\Delta_{\mathrm{f}} \mathrm{H...
MCQ+4 / -12023
19Isolation Of Elements
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : In the Ellingham diagram, a sharp change in slope of the line is observed for \(\mathrm{Mg} \rightarrow \mathrm{MgO}\) at $$\...
Assertion A : In the Ellingham diagram, a sharp change in slope of the line is observed for \(\mathrm{Mg} \rightarrow \mathrm{MgO}\) at $$\...
MCQ+4 / -12023
20Isolation Of Elements
In the extraction process of copper, the product obtained after carrying out the reactions
(i) \(2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}\)
(ii) $$2 \mathrm{Cu}_{2} \mathrm{O}...
(i) \(2 \mathrm{Cu}_{2} \mathrm{~S}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{Cu}_{2} \mathrm{O}+2 \mathrm{SO}_{2}\)
(ii) $$2 \mathrm{Cu}_{2} \mathrm{O}...
MCQ+4 / -12023
21Isolation Of Elements
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 ...
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 ...
MCQ+4 / -12023
22Isolation Of Elements
Which of the following is used as a stabilizer during the concentration of sulphide ores?
MCQ+4 / -12023
23Isolation Of Elements
Gibbs energy vs T plot for the formation of oxides is given below.
For the given diagram, the correct statement is -
For the given diagram, the correct statement is -
MCQ+4 / -12023
24Isolation Of Elements
In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
MCQ+4 / -12022
25Isolation Of Elements
Match List I with List II.
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overflow:hidden;padding:10px 5px;word-break:normal;}...
MCQ+4 / -12022
26Isolation Of Elements
In metallurgy the term "gangue" is used for :
MCQ+4 / -12022
27Isolation Of Elements
Given are two statements one is labelled as Assertion A and other is labelled as Reason R.
Assertion A : Magnesium can reduce Al2O3 at a temperature below 1350\(^\circ\)C, while above 1350\(^\circ\)C, while above 1350\(^\circ\)C aluminium c...
Assertion A : Magnesium can reduce Al2O3 at a temperature below 1350\(^\circ\)C, while above 1350\(^\circ\)C, while above 1350\(^\circ\)C aluminium c...
MCQ+4 / -12022
28Isolation Of Elements
In the metallurgical extraction of copper, following reaction is used :
FeO + SiO2 \(\to\) FeSiO3
FeO and FeSiO3 respectively are.
FeO + SiO2 \(\to\) FeSiO3
FeO and FeSiO3 respectively are.
MCQ+4 / -12022
29Isolation Of Elements
Which of the reaction is suitable for concentrating ore by leaching process ?
MCQ+4 / -12022
30Isolation Of Elements
Which of the following is structure of a separating funnel?
MCQ+4 / -12022
31Isolation Of Elements
Match List-I with List-II
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...
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...
MCQ+4 / -12022
32Isolation Of Elements
Statement I : Leaching of gold with cyanide ion in absence of air / O2 leads to cyano complex of Au(III).
Statement II : Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements...
Statement II : Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements...
MCQ+4 / -12022
33Isolation Of Elements
Which of the following methods are not used to refine any metal?
A. Liquation
B. Calcination
C. Electrolysis
D. Leaching
E. Distillation
Choose the correct answer from the options given below:
A. Liquation
B. Calcination
C. Electrolysis
D. Leaching
E. Distillation
Choose the correct answer from the options given below:
MCQ+4 / -12022
34Isolation Of Elements
Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if iron is _____________.
INTEGER+4 / -12022
35Isolation Of Elements
Given below are two statements :
Statement I : According to Ellingham diagram, any metal oxide with higher \(\Delta\)G\(^\circ\) is more stable than the one with lower \(\Delta\)G\(^\circ\).
Statement II : The metal involved in the formatio...
Statement I : According to Ellingham diagram, any metal oxide with higher \(\Delta\)G\(^\circ\) is more stable than the one with lower \(\Delta\)G\(^\circ\).
Statement II : The metal involved in the formatio...
MCQ+4 / -12022
36Isolation Of Elements
The role of depressants in 'Froth Flotation method' is to
MCQ+4 / -12022
37Isolation Of Elements
Refining using liquation method is the most suitable for metals with :
MCQ+4 / -12022
38Isolation Of Elements
The metal that is not extracted from its sulfide ore is :
MCQ+4 / -12022
39Isolation Of Elements
Leaching of gold with dilute aqueous solution of NaCN in presence of oxygen gives complex [A], which on reaction with zinc forms the elemental gold and another complex [B]. [A] and [B], respectively are :
MCQ+4 / -12022
40Isolation Of Elements
Given below are two statements.
Statement I : During electrolytic refining, blister copper deposits precious metals.
Statement II : In the process of obtaining pure copper by electrolysis method, copper blister is used to make the anode.
In...
Statement I : During electrolytic refining, blister copper deposits precious metals.
Statement II : In the process of obtaining pure copper by electrolysis method, copper blister is used to make the anode.
In...
MCQ+4 / -12022
41Isolation Of Elements
The compound(s) that is (are) removed as slag during the extraction of copper is :
(A) CaO
(B) FeO
(C) Al2O3
(D) ZnO
(E) NiO
Choose the correct answer from the options given below:
(A) CaO
(B) FeO
(C) Al2O3
(D) ZnO
(E) NiO
Choose the correct answer from the options given below:
MCQ+4 / -12022
42Isolation Of Elements
Given below are two statements.
Statement I : Pig iron is obtained by heating cast iron with scrap iron.
Statement II : Pig iron has a relatively lower carbon content than that of cast iron.
In the light of the above statements, choose the ...
Statement I : Pig iron is obtained by heating cast iron with scrap iron.
Statement II : Pig iron has a relatively lower carbon content than that of cast iron.
In the light of the above statements, choose the ...
MCQ+4 / -12022
43Isolation Of Elements
Match List - I with List - II :
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overflow:hidden;padding:10px 5px;word-break:nor...
MCQ+4 / -12022
44Isolation Of Elements
(a) Baryte, (b) Galena, (c) Zinc blende and (d) Copper pyrites. How many of these minerals are sulphide based?
INTEGER+4 / -12022
45Isolation Of Elements
Which of the following chemical reactions represents Hall-Heroult Process?
MCQ+4 / -12022
46Isolation Of Elements
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of Al2O3 with cryolite.Reason (R) : The oxid...
MCQ+4 / -12021
47Isolation Of Elements
In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud is ______________Pb, Sb, Se, Te, Ru, Ag, Au and Pt
INTEGER+4 / -12021
48Isolation Of Elements
The statement is incorrect about Ellingham diagram is
MCQ+4 / -12021
49Isolation Of Elements
The addition of silica during the extraction of copper from its sulphide ore :-
MCQ+4 / -12021
50Isolation Of Elements
Which one of the following set of elements can be detected using sodium fusion extract?
MCQ+4 / -12021