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NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice

The gas obtained by roasting of sulphide ore is reacted with acidified potassium dichromate. A green coloured compound ' X ' is formed. The compound X can be:

Options

  1. AS O 2
  2. BC r 2 S O 4 3
  3. CC l 2
  4. DC r O 2 C l 2

Correct answer

B. C r 2 S O 4 3

Step-by-step solution

Sulphide ore → roasting SO 2 SO 2 → K 2 Cr 2 O 7 +H 2 SO 4 Cr 2 (SO 4 ) 3 Green Colour

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