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Questions numbers 1 to 5 carry 1 mark each. For each of the questions 1 - 5 , Four alternatives choices have been provided of which only one is correct. You have to select the currect choice..

1. Evaluate 21.05347 - 1.6324 x 0.43, to 3decimal places.?

(a) 20.980

(b) 20.351

(c) 20.981

(d) 20.352

2.

(a)

(b)

(c)

(d)

3.Milikan’s contribution to the development of atomic theory is the determination of?

(a) charge on electron

(b) positive rays

(c) charge to mass ratio

(d) cathode rays

4.

(a)

(b)

(c)

(d)

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