Question # 1

How many blocks are presnt in modern periodic table

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2

3

4

5

The ability of an atom to attract the shared pair of electons towards itself in a molecule is called

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Ionization energy

Electronietativity

Shielding effect

Electron affinity

The vertical columns present in the priodic table are called.

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Group

Period

Both a and b

None of these

Whcih element is presnet in 2nd period.

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Lithium

Beryllium

Boron

All of these

Which of the following elemens is presnet in 1st period.

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Hydrogen

Helium

Both a and b

None of these

Whcih period of the modern periodic table is considered as incomplete period.

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4th

5th

6th

7th

How many elements are present in 7th period.

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2

8

18

23

Elements o group 13 to 18 have thier valence electrons is subshell

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s

p

f

d

When we mvoe from left to right in a period, ionization energy.

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No effect

Decreases

Increases

None of these

A yellow solid element exists in allotropic forms whic is also present in fossil fuel. Indicate the name

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Iodine

Carbon

Sulphur

Aluminium

The elements of a group show properties.

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Same

Different

Both a and b

None of these

Which element is the most reactive element?

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Florine

Oxygen

Chlorine

Nitrogen

Metals can form ions carrying carges.

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Uni positive

Di positive

Tri postive

All of these

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Chemistry 9th Class English Medium Unit 8 Online Test MCQs With Answers

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