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Question: Answered & Verified by Expert
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:
Chemistryd and f Block ElementsJEE Main
Options:
  • A SO2
  • B Cr2SO43
  • C Cl2
  • D CrO2Cl2
Solution:
2505 Upvotes Verified Answer
The correct answer is: Cr2SO43
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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