Which of the following is NOT an extraction p | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The Parke's process is a metallurgical process for removing silver from lead.Electrolytic refining is a standard method for the purification of me

Vedclass · Accepted Answer

By heating $Na[Ag(CN)_2]$

Vedclass · Answer

(D) The Parke's process is a metallurgical process for removing silver from lead.Electrolytic refining is a standard method for the purification of metals like $Cu$,$Ni$,$Pb$,$Au$,and $Ag$,where silver is often recovered as anode mud.The extraction of silver from silver sulphide $(Ag_2S)$ involves the following reactions:$Ag_2S + 4NaCN \rightarrow 2Na[Ag(CN)_2] + Na_2S$ (reversible reaction)$2Na[Ag(CN)_2] + Zn \rightarrow Na_2[Zn(CN)_4] + 2Ag$However,heating $Na[Ag(CN)_2]$ does not yield metallic silver $(Ag)$ directly as it decomposes into complex products rather than simple metallic silver.Therefore,option $D$ is the correct answer.

Which of the following is $NOT$ an extraction process for silver?

Similar Questions

After froth flotation,copper sulfide is reduced by.........

Assertion : Extraction of iron metal from iron oxide ore is carried out by heating with coke.
Reason : The reaction,
$Fe_2O_{3(s)} \to Fe_{(s)} + 3/2 O_{2(g)}$ is a spontaneous process.

The maximum temperature that can be achieved in a blast furnace is:

Upon heating with $Cu_2S$,the reagent$(s)$ that give copper metal is/are:
$(A)$ $CuFeS_2$
$(B)$ $CuO$
$(C)$ $Cu_2O$
$(D)$ $CuSO_4$

Iron obtained from blast furnace is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module