35. NCERT Exemplar VI

Exercise condition:

3 m.

1. Which of the following in Figure do not represent Bohr’s model of an atom correctly?

(a) and (d)
(b) and (d)
(a) and (b)
(b) and (c)

2. Which of the following statement is always correct?

An atom has equal number of electrons and protons.
An atom has equal number of electrons, protons and neutrons.
An atom has equal number of electrons and neutrons.
An atom has equal number of protons and neutrons.

3.

Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
(i). Rutherford’s atomic model
(ii). Thomson’s atomic model
(iii). Bohr’s atomic model

(iii), (ii) and (i).
(ii), (iii) and (i)
(i), (ii) and (iii)
(ii), (i) and (iii)

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