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

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  • Chapter NameCh 10 - Periods
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ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity Online Test

  • Total Questions30

  • Time Allowed30

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

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Question # 1

Who gave the concept of atomic number

Question # 2

The oxides of electronegative elements are

Question # 3

Which of the following pair of atomic numbers represents s-block elements?

Question # 4

From left to right, atomic radii of transition elements

Question # 5

Which of the following does not exhibit the periodicity in properties of the elements?

Question # 6

The valency of noble gases, in general, is

Question # 7

The most distinctive character among the elements is their division into

Question # 8

The valence shell electronic structure of an element is ns2np5. The element will along to the group of

Question # 9

Among the following elements which one has the highest value of first ionization potential?

Question # 10

Which of the following ion has the highest value of ionic radius?

Question # 11

The electropositive elements from

Question # 12

The attraction that an atom exerts on a pair of electrons that are being shared with another atom for forming covalent bond is referred to as its

Question # 13

The melting point is lowest for

Question # 14

Which of the following is an inert gas?

Question # 15

The elements of group lA are called

Question # 16

The lA elements are called

Question # 17

Which of the following isoelectronic ions has the lowest ionization energy?

Question # 18

Na2O is

Question # 19

In the modern long form of the periodic table elements are arranged in the increasing order of

Question # 20

Which has highest 1st I.E.

Question # 21

Electron affinity depends on

Question # 22

Which is not interstitial hydride

Question # 23

In a group form top to bottom, the hardness of alkali metals

Question # 24

The classify the elements, Newland gave the idea of

Question # 25

The element with atomic number 26 will be found in group

Question # 26

The atomic radius increases as we move down a group because

Question # 27

The fourth period contains elements

Question # 28

The elements of sub-group A are called

Question # 29

Rare earth elements are

Question # 30

All the elements belongs to the 2nd period are

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