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JEE Main202122 Jul 2021Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Sulphide ion is soft base and its ores are common for metals a Pb b Al c Ag d Mg Choose the correct answer from the options given below

Options

  1. Aa   and   c   only
  2. Ba   and   d   only
  3. Ca   and   b   only
  4. Dc   and   d   only

Correct answer

A. a   and   c   only

Step-by-step solution

Pb and Ag commonly exist in the form of sulphide ore like PbS (galena) and Ag 2 S (Argentite) Al is mainly found in the form of oxide ore whereas Mg is found in the form of halide ore.

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