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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2000
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Q)

A 300 gram radioactive sample has half life of 3 hours. After 18 hours remaining quantity will be


( A ) 2.34 gram
( B ) 3.34 gram
( C ) 4.68 gram
( D ) 9.37 gram

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