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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - JEE MCQ


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6 Questions MCQ Test 35 Years Chapter wise Previous Year Solved Papers for JEE - Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced

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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 1

Of the following, the metals that cannot be obtained byelectrolysis of the aqueous solution of their salts are :          (1990 - 1 Mark)

Detailed Solution for Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 1

Both Mg and Al have their reduction potentials less than that of water [Eº = –0.83 V]. Hence, their ions in the aqueous solution can not be reduced. Instead water will be reduced : 2H2O + 2e → H2 + 2OH

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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 2

Extraction of metal from the ore cassiterite involves        (2011)

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*Multiple options can be correct
Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 3

The carbon-based reduction method is NOT used for the extraction of                 (JEE Adv. 2013)

Detailed Solution for Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 3

Al from Al2O3 and Mg from MgCO3.CaCO3 are separately extracted by electrolytic reduction.

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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 4

Upon heating with Cu2S, the reagent(s) that give coppermetal is/are          (JEE Adv. 2014)

Detailed Solution for Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 4

Cu2S + 2Cu2O → 6Cu + SO2
Cu2S + 2CuO → 4Cu + SO2
Cu2S + CuSO4 → 3Cu + 2SO2

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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 5

Copper is purified by electrolytic refining of blister copper.The correct statement(s) about this process is(are)          (JEE Adv. 2015)

Detailed Solution for Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 5

In electrolytic refining of blister Cu, acidified CuSOis used as electrolyte, pure Cu deposits at cathode and impurities settle as anode mud.

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Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 6

Extraction of copper from copper pyrite (CuFeS2) involves           (JEE Adv. 2016)

Detailed Solution for Test: MCQs (One or More Correct Option): General Principles & Processes of Isolation of Elements | JEE Advanced - Question 6

Refining of blister copper is done by poling followed by electrorefining but not by carbon reduction method.

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