Name of scientist and their discoveried — task. Science TNSB Mentoring, Class 9.

a.Dalton	1. Hydrogen atom model
b. Chadwick	2. Discovery of nucleus
c.Rutherford	3. First atomic theory
d.Neil's Bohr	4. Plum pudding model
	5. Discovery of neutrons

a - 3, b - 5, c - 2, d - 1
a - 2, b - 1, c - 3, d - 4
a - 4, b - 3, c - 2, d - 1
a - 5, b - 4, c - 2, d - 1

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