${\rm{F}}{{\rm{e}}_2}{{\rm{O}}_3}$

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JEE • CHEMISTRY • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

General principles and processes of isolation of elements practice · Hard

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Practice format and chapter quiz

These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.

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1 Hard

1 of 10

Understanding +4 | -1

Which statement is correct?

View answer and explanation

Correct option: D

Fluxes are carefully choosen to combine with the gangue present in the ore to produce easily fusible slag to carry away the impurities

Option D (Fluxes are carefully choosen to combine with the gangue present in the ore to produce easily fusible slag to carry away the impurities) is correct because it accurately describes the role of fluxes in metallurgy.

2 Hard

2 of 10

Analyzing +4 | -1

Assertion (A): In the extraction of

{Ag}

by Cyanide process, Air must be blown in the disolution of

{Ag}_2 {S}

in dil.

{NaCN}

Reason (R): Continuous air blow oxidises

{Na}_2{S}

{Na}_2 {SO}_3

and prevents reaction between

{Na}_3{S}

and

{Na}\left[{Ag}({CN})_2\right]

View answer and explanation

Correct option: A

Both (A) and (R) are true and (R) is the correct explanation of (A)

Option A is correct because both the assertion and the reason are true, and the reason correctly explains why air is blown in the cyanide process to extract silver.

3 Hard

3 of 10

Remembering +4 | -1

Match the compound with the metal for which it is used for the process of extraction.

(i)

\mathrm{NaCN}

- (a) Titanium

(ii) Iodine - (b) Aluminium

(iii) Cryolite - (c) Silver ore

View answer and explanation

Correct option: A

(i) - (c), (ii)-(a), (iii)-(b)

Option A is correct because it accurately matches the compounds with the metals they are used to extract: NaCN for Silver, Iodine for Titanium, and Cryolite for Aluminium.

4 Hard

4 of 10

Remembering +4 | -1

Which is not employed for refining of metal?

View answer and explanation

Correct option: B

Leaching

Option B (Leaching) is correct because leaching is primarily used for extracting metals from ores, not for refining them.

5 Hard

5 of 10

Remembering +4 | -1

The methods chiefly used for the extraction of lead and tin from their ores are respectively

View answer and explanation

Correct option: A

Self reduction and carbon reduction

Option A (Self reduction and carbon reduction) is correct because lead is extracted by self-reduction and tin by carbon reduction.

6 Hard

6 of 10

Remembering +4 | -1

Sperrylite is:

View answer and explanation

Correct option: B

\mathrm{PtA}{\mathrm{s}_2}

Option B (

\mathrm{PtA}{\mathrm{s}_2}

) is correct because Sperrylite is the mineral form of platinum diarsenide.

7 Hard

7 of 10

Understanding +4 | -1

Identify the reaction that does not take place during the smelting process of copper extraction

View answer and explanation

Correct option: B

\mathrm{C}{\mathrm{u}_2}\mathrm{O} + \mathrm{FeS\;} \to \mathrm{C}{\mathrm{u}_2}\mathrm{S} + \mathrm{FeO}

Option B (

\mathrm{C}{\mathrm{u}_2}\mathrm{O} + \mathrm{FeS\;} \to \mathrm{C}{\mathrm{u}_2}\mathrm{S} + \mathrm{FeO}

) is correct because this reaction does not occur during the smelting process of copper extraction.

8 Hard

8 of 10

Remembering +4 | -1

Hydrometallurgy is based on

View answer and explanation

Correct option: D

Reduction

Option D (Reduction) is correct because hydrometallurgy involves the reduction of metal ions in solution to obtain the pure metal.

9 Hard

9 of 10

Remembering +4 | -1

‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class

View answer and explanation

Correct option: A

Sodium alumino silicate

The correct answer is A (Sodium alumino silicate) because Lapis-Lazuli is a blue-colored gemstone composed of sodium alumino silicate.

10 Hard

10 of 10

Analyzing +4 | -1

Which series of reactions correctly represents chemical relations related to iron and its compound?

View answer and explanation

Correct option: D

Fe\xrightarrow{{{O_2},\,\,Heat}}F{e_3}{O_4}\xrightarrow{{CO,\,\,600^\circ \,C}}\,FeO\xrightarrow{{CO,\,\,700^\circ \,C}}Fe\,

Option D (

Fe\xrightarrow{{{O_2},\,\,Heat}}F{e_3}{O_4}\xrightarrow{{CO,\,\,600^\circ \,C}}\,FeO\xrightarrow{{CO,\,\,700^\circ \,C}}Fe\,

) is correct because it accurately represents the chemical reactions related to iron and its compounds through oxidation and reduction processes.

Revision notes and key takeaways

Review GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 10 single-correct-answer MCQs on GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

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