Refining of Metals

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

* Multiple Correct Options

(A)

Impure Cu strip is used as cathode

(B)

Acidified aqueuous

CuSO_{4}

is used as electrolyte

(C)

Pure Cu deposits at cathode

(D)

Impurities settle as anode-mud

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The metal that can be purified economically by fractional distillation method is

Boron and silicon of very high purity can be obtained through

vapour phase refining

(D)

electrolytic refining

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Match List-I with List-II. \begin{array}{ll} \text{\textbf{List-I}} & \text{\textbf{List-II}} \\ \text{A. Mercury} & \text{1. Vapour phase refining} \\ \text{B. Copper} & \text{2. Distillation refining} \\ \text{C. Silicon} & \text{3. Electrolytic refining} \\ \text{D. Nickel} & \text{4. Zone refining} \end{array} Choose the most appropriate answer from the options given below.

(A)

\to

1, B

\to

4, C

\to

2, D

\to

(B)

\to

2, B

\to

3, C

\to

1, D

\to

(C)

\to

2, B

\to

3, C

\to

4, D

\to

(D)

\to

2, B

\to

4, C

\to

3, D

\to

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The Mond process is used for the

purification of Zr & Ti

Match the refining methods Column I with metals Column II. $Column I (Refining Methods) I. Liquation II. Zone refining III. Mond process IV. van Arkel method Column II (Metals) (A) Zr (B) Ni (C) Sn (D) Ga$

(A)

I-(C); II-(D); III-(B); IV-(A)

(B)

I-(B); II-(C); III-(D); IV-(A)

(C)

I-(C); II-(A); III-(B); IV-(D)

(D)

I-(B); II-(D); III-(A); IV-(C)

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In the electrolytic refining of blister copper, the total number of main impurities from the following, removed as anode mud is …… Pb, Sb, Se, Te, Ru, Ag, Au and Pt

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Which method of purification is represented by the following equation? $Ti (s) + 2 I_{2} (g) 523 K TiI_{4} (g) 1700 K Ti (g) + 2 I_{2} (g)$

The element that can be refined by distillation is

The method used for the purification of indium is

vapour phase refining

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

vapour phase refining

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During the process of electrolytic refining of copper, some metals present as impurity settle as 'anode mud'. These are

Which refining process is generally used in the purification of low melting metals?

(A)

Chromatographic method

The electrolytes usually used in the electroplating of gold and silver, respectively, are

(A)

[Au(OH)_{4}]^{-}

and

[Ag(OH)_{2}]^{-}

(B)

[Au(NH_{3})_{2}]^{+}

and

[Ag(CN)_{2}]^{-}

(C)

[Au(CN)_{2}]^{-}

and

[Ag(CN)_{2}]^{-}

(D)

[Au(CN)_{2}]^{-}

and

[AgCl_{2}]^{-}

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

The metal that can be purified economically by fractional distillation method is

Boron and silicon of very high purity can be obtained through

The Mond process is used for the

In the electrolytic refining of blister copper, the total number of main impurities from the following, removed as anode mud is …… Pb, Sb, Se, Te, Ru, Ag, Au and Pt

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Which method of purification is represented by the following equation? Ti (s)+2I2​(g)523 K​TiI4​(g)1700 K​Ti (g)+2I2​(g)

The element that can be refined by distillation is

The method used for the purification of indium is

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

During the process of electrolytic refining of copper, some metals present as impurity settle as 'anode mud'. These are

Which refining process is generally used in the purification of low melting metals?

The electrolytes usually used in the electroplating of gold and silver, respectively, are

Which method of purification is represented by the following equation? $Ti (s) + 2 I_{2} (g) 523 K TiI_{4} (g) 1700 K Ti (g) + 2 I_{2} (g)$