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ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity Online Test MCQs With Answers

Question # 1

The structure of complex hydrides is

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Tetrahedal

Trigonal

Octahedral

Square planar

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Question # 2

In the periodic table, the element with atomic number 16 will be placed in the group

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Fourteen

Sixteen

Thirteen

Fifteen

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Question # 3

Which of the following statement about electron affinity of two elements is correct

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Carbon has greater than oxygen

Sulphur has less than oxygen

Iodine has greater than bromine

Bromine has less than chlorine

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Question # 4

Which of the following elements should be the least metallic in character

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Question # 5

The valency of noble gases, in general, is

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Zero

One

Three

Two

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Question # 6

The electropositive elements from

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Acidic oxides

Basic oxides

Neutral oxides

None

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Question # 7

Which is the longest period of the periodic table

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5th

7th

6th

2nd

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Question # 8

According to Mendeleev, the properties of the elements are periodic function of their

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Atomic number

Atomic volumes

Atomic masses

Atomic densities

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Question # 9

All the elements belongs to the 2nd period are

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Normal elements

Transition elements

Stable elements

Halogens

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Question # 10

The lA elements are called

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Alkaline earth metal

Alkaline metals

The halogens

The inert gases

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Question # 11

Ionic hydrides are generally

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Liquid at room temperature

Good electrical conductors

Good reducing agents

Easily reduced

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Question # 12

The correct order of electron affinity among the following is

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F > Cl > Br

Br > Cl > F

Cl > F > Br

F > Br > Cl

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