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Reported Question / Answer
Q.) Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
1)
rubber
2)
acidic refractory
3)
lead or acid-proof bricks
4)
karbate
5)
NULL
Answer :
3
Thank you for reporting wrong Question / Answer / Options
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Message / Correct Answer / Suggestion
Human Verification : Answer 2 + 3 = ?
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