Question

Monds process is used for:
a.) Ni
b.) Al
c.) Fe
d.) Cu

Answer 1

Hint: The Mond process, occasionally called as the carbonyl process. This is a technique proposed by Ludwig Mond in 1890. This process was used commercially before the end of the 19th century.
Complete answer:
Using Monds process pure form of Nickel can be prepared from oxides of nickel.
Monds process converts nickel oxides into nickel metal with very high purity in just a single process.
Monds process contains three steps.
First step:
Nickel oxide (\[NiO\]) reacts with hydrogen at 200 \[{}^{0}C\]and gives nickel, together with impurities like iron and cobalt.
\[Ni{{O}_{{}}}+{{H}_{2}}\xrightarrow[{}]{}Ni+{{H}_{2}}O\]
 Second step:
The nickel with impurities reacts with carbon monoxide (\[CO\]) at 50–60 \[{}^{0}C\]and forms the gas nickel carbonyl (\[Ni{{(CO)}_{4}}\], leaving the impurities as solids.
\[N{{i}_{{}}}+4CO\xrightarrow[{}]{}Ni{{(CO)}_{4}}\]
 Third step: The mixture of nickel carbonyl and hydrogen gas is heated to 220–250\[{}^{0}C\] and results in the formation of nickel (\[Ni\]) and carbon monoxide (\[CO\]). \[Ni{{(CO)}_{4}}+{{H}_{2}}\xrightarrow[{}]{}Ni+4CO\]
Coming to options, Option B, Aluminum is wrong.
Coming to option C, Ferrous is wrong.
Coming to option D, Copper is wrong.
So, the correct option is A, Nickel is the correct answer.
Note: Don’t be confused with the names Mond's process and Carbonyl process. Both the names are the same. By using carbonyl in Mond's process nickel metal is going to purify. So, the name Monds process is also called a carbonyl process.