Question # 1

Positively charged particle of an atom is called.

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Electron

Proton

Atom

Neutron

Atomic number of element presetnin period 2 and group 15 of the periodic table.

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4

5

6

7

Letter K is used to express theshell around the nucleus of an atom.

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1st

2nd

3rd

4th

The maximum numebr of electrons that N-Shell accomodate are.

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2

8

18

32

--------------- are fundamental particles of an atom.

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Electron

Proton

Neutron

All of these

There are ............ groups in periodic table.

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2

8

18

32

The central part of an atom is called.

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Electron

Proton

Neutron

Nucleus

How many periods are there is the Periodic table.

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Five

Six

Seven

Eight

Formula showing maximum number of electrons in a shell.

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n2

2n2

3n2

4n2

The mass of an atom is almost due to the.

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Electron

Proton

Nucleus

Neutrons

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Science 7th Class English Medium Chapter 4 Online Test MCQs With Answers

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