Q.

The word “mole” was introduced around 1896 by?

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a

 Marie Curie

 

b

  Dmitri Mendeleev

c

Alexander Fleming

 

d

  Wilhelm Ostwald

   

answer is A.

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Detailed Solution

The word “mole” was introduced around 1896 by Wilhelm Ostwald who derived the term from the Latin word moles meaning a ‘heap’ or ‘pile’. A substance may be considered as a heap of atoms or molecules. The unit mole was accepted in 1967 to provide a simple way of reporting a large number– the massive heap of atoms and molecules in a sample.

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