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Q: Of the following grades of pencil, which is the softest? पेंसिल के निम्नलिखित ग्रेडों में से कौन-सा सबसे नरम है?
  • A. F
  • B. 9B
  • C. HB
  • D. H
Correct Answer: Option B -
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Explanations:

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