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Mr. Dubey • 100.64K Points
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Q. Which defect is caused due to the conversion of moisture to steam because of the heat of molten metal?

  • (A) blow holes
  • (B) open blows
  • (C) air inclusions
  • (D) cold shut
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Explanation by: Mr. Dubey
blow holes are entrapped gases, which are formed as a result of gases from mould, molten metal and stream sand. further these are caused due to the conversion of moisture to steam because of the heat of molten metal.

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