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The word 'mole' was introduced around 1896 by

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The word 'mole' was introduced around 1896 by

(a) John Dalton 

(b) Wilhelm Ostwald

(c) Joseph Proust 

(d) Maharishi Kanad

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(b) Wilhelm Ostwald

The word mole was introduced by Wilhelm Ostwald in 1896. It's the S.I. unit to measure the amount of substance or particles denoted by the symbol 'mol'.

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