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Reported Question / Answer
Q.) What did John Scott Haldane introduce in coal mines to detect gas?
1)
Electronic gas detectors
2)
Frogs
3)
Litmus paper
4)
Canaries
5)
NULL
Answer :
4
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Message / Correct Answer / Suggestion
Human Verification : Answer 2 + 3 = ?
Reading Corner ( Ctrl + Mouse Click)
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When did West Virginia become a state of USA?
Of which city was Calvin Coolidge Mayor?
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