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

Oxidation state of boron, aluminium and gallium is:

Question # 2

Which group elements are the least metallic in nature?

Question # 3

Newland gave his law in the year:

Question # 4

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

Question # 5

E.N. Value of fluorine is:

Question # 6

Modern Periodic table is based upon periodic function:

Question # 7

Newland said, every eight element repeats properties of element:

Question # 8

the element not known till Mandleev tabulated his periodic table:

Question # 9

Electron affinity value from higher to heavier element:

Question # 10

Dobriener's was a scientist:

Question # 11

Mark the correct statement:

Question # 12

Newland's was scientist:

Question # 13

The periodic function of properties of elements is their atomic number

Question # 14

Newland's gave law:

Question # 15

Hydrides are:

Question # 16

Dobereiner gave his law in the year:

Question # 17

Sodium belongs to block of periodic table:

Question # 18

Alkali and alkaline earth metals are basic oxides except:

Question # 19

Period Number 6 contains elements in it:

Question # 20

Ionization energy of sodium is (Kj/mol)

Question # 21

Mendeleev was a scientist:

Question # 22

Binary compounds of hydrogens are called:

Question # 23

Oxidation state of an element in free state is:

Question # 24

Properties of metal are:

Question # 25

Mendeleev gave his periodic law in the year:

Question # 26

Law of triads was given by:

Question # 27

There were seven groups in periodic table proposed by:

Question # 28

Element with higher oxidation state form oxides:

Question # 29

Hydration energy depends upon:

Question # 30

Periodic law was given by:

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