Question # 1

Which element is the most reactive element?

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Florine

Oxygen

Chlorine

Nitrogen

Metals are teh elements which have.

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Electronegative character

Electropositive character

Both a and b

None of the above

Which is strongest oxidizing agent.

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Cholorine

Iodine

Fluorine

Bromine

The vertical columns present in the priodic table are called.

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Group

Period

Both a and b

None of these

Atomic number of lanthanum is

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57

58

59

60

How many periods are present in the modern periodic table

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7

8

10

12

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

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

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No effect

Decreases

Increases

None of these

How many elements are present in 6th period.

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2

8

18

32

Actinidws belong to period.

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4th

5th

6th

7th

When we mvoe from top to bottom in a group atomic size.

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Decrease

Increases

First increases then decreases

None of the above

How many elements are present in each 4th and 5th period.

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2

8

32

18

Which of the following grops contain alkaline earth metals.

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I A

II A

VII A

VIII A

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

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