Question # 1

The mass of an atom is almost due to the.

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Electron

Proton

Nucleus

Neutrons

The central part of an atom is called.

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Electron

Proton

Neutron

Nucleus

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

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1st

2nd

3rd

4th

The charge present on atom is

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Positive

Negative

Both a and b

Neutral

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

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2

8

18

32

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

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Electron

Proton

Neutron

All of these

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

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4

5

6

7

The elements of group 18 are called.

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Alkali metals

Noble gases

Alkaline metals

Transition metals

The particle of an atom having negative charge on it.

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Electron

Proton

Neutron

Nucleus

The particles of an element having different mass numbers.

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Proton

Neutrons

Isotopes

Atoms

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

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