Which of the following pairs is incorrect?(a) | vedclass

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

Question

(C) The Goldschmidt alumino-thermite process is used for the reduction of metal oxides like $Cr_2O_3$ using $Al$. This is correct.The MacArthur-Forres

Vedclass · Accepted Answer

$b, d$

Vedclass · Answer

(C) The Goldschmidt alumino-thermite process is used for the reduction of metal oxides like $Cr_2O_3$ using $Al$. This is correct.The MacArthur-Forrest cyanide process is used for the extraction of $Ag$ or $Au$,not $Fe$. This is incorrect.The Mond process is used for the refining of $Ni$ by forming $Ni(CO)_4$. This is correct.The Van Arkel process is used for the refining of metals like $Zr$ or $Ti$,not $Au$. This is incorrect.Therefore,the incorrect pairs are $(b)$ and $(d)$.

Which of the following pairs is incorrect?
$(a)$ Goldschmidt alumino-thermite process $-$ $Cr_2O_3$
$(b)$ MacArthur-Forrest cyanide process $-$ $Fe$
$(c)$ Mond process $-$ $Ni$
$(d)$ Van Arkel process $-$ $Au$

Similar Questions

Which metal is ultrapurified by carbon monoxide?

When an impurity in a metal has greater affinity for oxygen and is more easily oxidised than the metal itself,the metal is refined by:

When the sample of copper with zinc impurity is to be purified by electrolysis,the appropriate electrodes are:
Cathode,Anode

The method,which is based on the principle that "different components of a mixture are differently adsorbed on an adsorbent" is called

Which one of the following statements is not correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which of the following pairs is incorrect?$(a)$ Goldschmidt alumino-thermite process $-$ $Cr_2O_3$$(b)$ MacArthur-Forrest cyanide process $-$ $Fe$$(c)$ Mond process $-$ $Ni$$(d)$ Van Arkel process $-$ $Au$