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Match List I with List II

List I (Substance added)
  1. Chromium (III) oxide
  2. Cobalt (II) oxide
  3. Cuprous oxide
  4. Manganese dioxide
List II (Colour imparted to glass)
  • Red
  • Blue
  • Violet
  • Green
Correct Answers
1. Green 2. Blue 3. Red 4. Violet
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