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JEE Main201910 Apr 2019Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

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

Options

  1. A( I ) - ( b ) ; ( I I ) - ( c ) ; ( I I I ) - ( d ) ; ( I V ) - ( a )
  2. B( I ) - ( b ) ; ( I I ) - ( d ) ; ( I I I ) - ( a ) ; ( I V ) - ( c )
  3. CI - c ; I I - d ; I I I - b ; I V - a
  4. DI - ( c ) ; I I - a ; ( I I I ) - b ; I V - ( d )

Correct answer

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

Step-by-step solution

Liquation is used to purify the metal whose melting point is lower than that of impurities like Sn ,   Bi , Pb etc. Mond’s process The impure nickle is heated in presence of carbon monoxide. Ni s   +   CO g   → Ni CO 4 g   →   Ni s   +   4 CO g Zone refining is based on the principle that impurities are more soluble in melt that in the pure solid metal. The metals like Ga ,   Ge etc. are purified by this method. Van Arkell method is used for those metal

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