1.

Which one of the following pairs is correctly matched ? (a) Mass Spectrograph : Chadwick (b) Atomic number : Moseley (c) Neutron : Millikan (d) Measurement of charge of an electron : Aston

Answer»

The correct option is: (b) Atomic number: Moseley

Explanation:

Scientist        Discovery 

Moseley – Atomic number 

Chadwick – Neutron 

Millikan – Measurement of charge of an electron. 

Aston – Mass spectrograph



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