Chemistry-Structure of the Atom (NSTSE (National Science Talent Search Exam- Unified Council) Class 9): Questions 1 - 8 of 25

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Question number: 1

» Chemistry » Structure of the Atom

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Question

Which of the following species contain the least number of neutrons?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2

» Chemistry » Structure of the Atom

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Question

The particle with 13 protons and electrons in?

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 3

» Chemistry » Structure of the Atom

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Question

An unipositive ion of an element has electronic structure then what is the atomic number of ?

Choices

Choice (4) Response

a.

18

b.

17

c.

16

d.

19

Question number: 4

» Chemistry » Structure of the Atom

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Question

Which of the following is mass of a proton;

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 5

» Chemistry » Structure of the Atom

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Question

The radius of an atomic nucleus is the order of?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 6

» Chemistry » Structure of the Atom

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Question

Which of the following has completed shell completed in electronic configuration?

Choices

Choice (4) Response

a.

Magnesium

b.

Calcium- Ca

c.

d.

Aluminium

Question number: 7

» Chemistry » Structure of the Atom

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Question

Calculate the frequency and wave number of radiation with wavelength ?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 8

» Chemistry » Structure of the Atom

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Question

The mass of photon having wavelength in?

Choices

Choice (4) Response

a.

b.

c.

d.

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