ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity

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  • Chapter NameCH-12.Periodic classification of elements & periodicity

ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity

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ECAT Chemistry Chapter 12 Periodic Classification of Elements and Periodicity

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Question # 1

Hydrides are:

Question # 2

the element not known till Mandleev tabulated his periodic table:

Question # 3

Law of octaves was given by:

Question # 4

First of all, idea of groups and periods was introduced by:

Question # 5

There were seven groups in periodic table proposed by:

Question # 6

Electron affinity value from higher to heavier element:

Question # 7

Binary compounds of hydrogens are called:

Question # 8

Mendeleev was a scientist:

Question # 9

Newland's gave law:

Question # 10

Properties of metal are:

Question # 11

Modern Periodic table is based upon periodic function:

Question # 12

Dobereiner gave his law in the year:

Question # 13

Mendeleev gave his periodic law in the year:

Question # 14

Newland's was scientist:

Question # 15

Mosley gave his periodic law in the year:

Question # 16

Newland gave his law in the year:

Question # 17

Atomic radius changes from top to bottom in a group.:

Question # 18

All facts of chemistry must be in simple logical patterns because chemistry is a subject:

Question # 19

Element with higher oxidation state form oxides:

Question # 20

Dobriener's was a scientist:

Question # 21

Scientist(s) made contributions in the field designing a periodic table

Question # 22

Oxidation state of an element in free state is:

Question # 23

Hydration energy depends upon:

Question # 24

Which group elements are the least metallic in nature?

Question # 25

Alkali and alkaline earth metals are basic oxides except:

Question # 26

Mark the correct statement:

Question # 27

The periodic function of properties of elements is their atomic number

Question # 28

Sodium belongs to block of periodic table:

Question # 29

Ionization energy of sodium is (Kj/mol)

Question # 30

Oxidation state of boron, aluminium and gallium is:

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