Back to GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

NEET UG CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

1 Hard

1 of 1

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 in the cyanide process for silver extraction, air is blown to oxidize Na2S to Na2SO3, preventing its reaction with Na[Ag(CN)2].

More Questions from GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

Practice All Chapter MCQs →

Mac Arthur and Forest cyanide process is used in the extraction of: Which form of iron has lowest percentage of carbon? Assertion (A): Wolframite impurities are separated from cassiterite by electromagnetic separation.

Reason (R): Cassiterite being magnetic is attracted by the magnet and forms a separate heap. Which one is an ore of sodium? Aluminothermic process is used for the extraction of metals, whose oxides are: In the extraction of copper, the metal formed in the Bessemer’s converter is due to the reaction: