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 )

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The pattern obtained on chromatography paper is called .
(Chromatograph, Valency, Cuprum, Negatively, ${ZnCl}_{2}$ , one, $ZnS$ , Positively, Separating funnel)

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Important Questions on General Principles and Processes of Isolation of Elements (Metallurgy)

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

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

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

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

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

The pair of metals refined by "vapour phase refining" is

HARD

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Explain zone refining.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

For the electro-refining of copper, what is the cathode made up of?

HARD

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Write down the chemical reactions taking place in the extraction of zinc from zinc blende.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

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>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Which element is obtained in the pure form by Van Arkel method?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

The Mond process is used for the:

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

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>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Describe the principle of cupellation used for the purification of metals.

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance

A

and substance

B

from the base line are

3.25 cm . 2.08 cm

and

1.05 cm

. respectively. The ratio of

R_{f}

values of

A

B

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Describe the principle of Liquation.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

The method used for the purification of Indium is:

HARD

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Spelter (impure zinc) contains

Pb, Fe

and

Cd

as impurities. How can you refine the impure zinc?

HARD

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Draw a neat labelled diagram of froath floatation process used for the concentration of sulphide ores. State the principle behind zone refining and chromatographic methods used for refining elements.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Which of the following refining process yields

99.9 %

pure zinc?

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is

HARD

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are)

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Elements (Metallurgy)>Refining or Purification of Impure Metals

Among the following, in which type of chromatography, both stationary and mobile phases are in liquid state?

The pattern obtained on chromatography paper is called . (Chromatograph, Valency, Cuprum, Negatively, ZnCl2, one, ZnS, Positively, Separating funnel)

Important Questions on General Principles and Processes of Isolation of Elements (Metallurgy)

Learn and Prepare for any exam you want !

The pattern obtained on chromatography paper is called .
(Chromatograph, Valency, Cuprum, Negatively, ${ZnCl}_{2}$ , one, $ZnS$ , Positively, Separating funnel)