NSO Level 1- Science Olympiad (SOF) Class 9: Questions 774 - 777 of 1123

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Question number: 774

» Chemistry » Structure of the Atom

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MCQ▾

Question

The sum of the total number of protons and neutrons present in the nucleus of an atom is called

Choices

Choice (4)Response

a.

Mass number

b.

Atomic number

c.

Valency

d.

None of the above

Question number: 775

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following is not a feature of Rutherford’s Atom Model?

Choices

Choice (4)Response

a.

The size of the nucleus is very small as compared to the size of the atom.

b.

The electrons revolve round the nucleus in well-defined orbits.

c.

There is a positively charged centre in the atom called nucleus.

d.

Mass of the atom is concentrated in the orbits.

Question number: 776

» Mental Ability

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MCQ▾

Question

The given a figure (X) is followed by four alternative figures (A), (B), (C) and (D). Select one figure from the alternative, which fits exactly into figure (X), to form a perfect square.

Figure shows piece of square in form of figure (X)

Figure Shows Piece of Square in Form of Figure (X)

Choices

Choice (4)Response

a.

Image shows the answer figure placed in square box – Choice A

Image Shows the Answer Figure Placed in Square Box – Choice A

b.

Image shows the answer figure placed in square box – Choice B

Image Shows the Answer Figure Placed in Square Box – Choice B

c.

Image shows the answer figure placed in square box – Choice C

Image Shows the Answer Figure Placed in Square Box – Choice C

d.

Image shows the answer figure placed in square box – Choice D

Image Shows the Answer Figure Placed in Square Box – Choice D

Question number: 777

» Chemistry » Structure of the Atom

Edit
MCQ▾

Question

The electronic configuration of Sulphur is 2,8, 6. Its valency is

Choices

Choice (4)Response

a.

4

b.

6

c.

8

d.

2

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