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MHT CET202015 Oct 2020Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Which of the following is a product of first step and is used as reactant in next step for manufacture of K ₂ Cr ₂ O ₇ from concentrated chromite ore ?

Options

  1. ASodium dichromate
  2. BPotassium chromate
  3. CSodium sulphate
  4. DSodium chromate

Correct answer

D. Sodium chromate

Step-by-step solution

(1) Conversion of chromite ore into sodium chromate (2) Conversion of sodium chromate into sodium dichromate (3) Conversion of sodium dicbromate to potassium dichromate Sod. dichromate Na ₂ Cr ₂ O ₇ +2 KCl Pot. dicbromate K ₂ Cr ₂ O ₇ +2 NaCl

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