Match the elements in Column I with methods of purification in Column II. Column-I Column-II (a) Boron (p) Van Arkel method (b) Tin (q) Mond's process (c) Zirconium (r) Liquation (d) Nickel (s) Zone refining

(a)-(s), (b)-(r), (c)-(p), (d)-(q)

(a)-(s), (b)-(r), (c)-(q), (d)-(p)

(a)-(q), (b)-(p), (c)-(s), (d)-(r)

(a)-(r), (b)-(s), (c)-(p), (d)-(q)

Match list-I with list-II : List-I List-II (a) Mercury (i) Vapour phase refining (b) Copper (ii) Distillation refining (c) Silicon (iii) Electrolytic refining (d) Nickel (iv) Zone refining Choose the most appropriate answer from the option given below:

a - ii , b - iii , c - iv , d - i

a - i , b - iv , c - ii , d - iii

a - ii , b - iii , c - i , d - iv

a - ii , b - iv , c - iii , d - i

Match the refining methods (Column I) with metals (Column II). Column I Column II (Refining methods) (Metals) (I) Liquation (a) Z r (II) Zone Refining (b) N i (III) Mond Process (c) S n (IV) Van Arkel Method (d) G a

I - c ; I I - d ; I I I - b ; I V - a

( I ) - ( b ) ; ( I I ) - ( c ) ; ( I I I ) - ( d ) ; ( I V ) - ( a )

( I ) - ( b ) ; ( I I ) - ( d ) ; ( I I I ) - ( a ) ; ( I V ) - ( c )

I - ( c ) ; I I - a ; ( I I I ) - b ; I V - ( d )

During electrolytic refining of zinc it gets

MEDIUM

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

In the Bayer's process, the leaching of alumina is done by using

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

In the context of the Hall-Heroult process for the extraction of

Al

, which of the following statements is false?

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Match the following:

	List-I		List-II
(A)	Zone refining	(I)	Indium
(B)	Poling	(II)	Titanium
(C)	Van-Arkel method	(III)	Nickel
(D)	Mond process	(IV)	Blister copper
		(V)	Zinc

The correct answer is:

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

In the metallurgy of aluminum when the fused matrix is electrolyzed, the overall reduction reaction is

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

In the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of:

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

The common impurity present in bauxite is

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Match the following

	List - I		List - II
(a)	Copper	(i)	Bauxite
(b)	Iron	(ii)	Malachite
(c)	Zinc	(iii)	Haematite
(d)	Aluminium	(iv)	Calamine
		(v)	Galena

The correct answer is

MEDIUM

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of

{Al}_{2} O_{3}

with cryolite.
Reason (R) : The oxidation state of

Al

in cryolite is

+ 3 .

In the light of the above statements, choose the most appropriate answer from the options given below :

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Match the elements in Column I with methods of purification in Column II.

	Column-I		Column-II
(a)	Boron	(p)	Van Arkel method
(b)	Tin	(q)	Mond's process
(c)	Zirconium	(r)	Liquation
(d)	Nickel	(s)	Zone refining

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

In the context of the Hall-Heroult process for the extraction of

Al

, which of the following statement is incorrect.

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Which of the following refining process yields

99.9 %

pure zinc?

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Name the process that is employed to refine aluminium.

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Match list-I with list-II :

	List-I		List-II
(a)	Mercury	(i)	Vapour phase refining
(b)	Copper	(ii)	Distillation refining
(c)	Silicon	(iii)	Electrolytic refining
(d)	Nickel	(iv)	Zone refining

Choose the most appropriate answer from the option given below:

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Electrolytic refining is used to purify which of the following metals?

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is:

MEDIUM

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Which of the following impurity can be removed by electrodialysis method?

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Purification of aluminium by electrolytic refining is called:

MEDIUM

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Which one in the following statements is "not correct" about refining of ores?

MEDIUM

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Match the refining methods (Column I) with metals (Column II).

	Column I	Column II
	(Refining methods)	(Metals)
(I)	Liquation	(a) $Z r$
(II)	Zone Refining	(b) $N i$
(III)	Mond Process	(c) $S n$
(IV)	Van Arkel Method	(d) $G a$

EASY

Chemistry>Inorganic Chemistry>Making Use of Metals>Extraction of Aluminium

Hall Heroult's process is given by:

During electrolytic refining of zinc, it gets

Important Questions on Making Use of Metals

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