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Q: Which would act as both oxidising and reducing agent? इनमें से कौन एक ऑक्सीकारक तथा अपचायक एजेन्ट दोनो की भांति व्यवहार करता है?
  • A. SO₂
  • B. MnO₂
  • C. Al₂O₃
  • D. CrO₃
Correct Answer: Option A -
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Explanations:

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