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# Periodic Classification Of Elements - Class 10 Science (Compulsory Test)

## 30 Questions MCQ Test | Periodic Classification Of Elements - Class 10 Science (Compulsory Test)

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This mock test of Periodic Classification Of Elements - Class 10 Science (Compulsory Test) for Class 10 helps you for every Class 10 entrance exam. This contains 30 Multiple Choice Questions for Class 10 Periodic Classification Of Elements - Class 10 Science (Compulsory Test) (mcq) to study with solutions a complete question bank. The solved questions answers in this Periodic Classification Of Elements - Class 10 Science (Compulsory Test) quiz give you a good mix of easy questions and tough questions. Class 10 students definitely take this Periodic Classification Of Elements - Class 10 Science (Compulsory Test) exercise for a better result in the exam. You can find other Periodic Classification Of Elements - Class 10 Science (Compulsory Test) extra questions, long questions & short questions for Class 10 on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

Solution:
QUESTION: 3

### How does the valency vary in going down a group?

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QUESTION: 4

An element P belongs to the second period and group 13. What is the formula of its oxide?

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QUESTION: 5

What is the nature of an element having atomic number 20?

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QUESTION: 6

Which group elements are called transition metals?

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QUESTION: 7

What property of all elements in the column of the periodic table as fluorine have in common?

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QUESTION: 8

Which group of periodic table does Ge belongs to ?

Solution:
QUESTION: 9

Match the following with correct response.
(1) Alkali metals
(2) Alkaline earth metal
(3) Halogen
(4) Inert gas

(A) Magnesium
(B) Krypton
(C) chlorine
(D) Sodium

Solution:
QUESTION: 10

In Newlands law of octaves elements are arranged in order of

Solution:
QUESTION: 11

How many elements did Mendeleev classify?

Solution:
QUESTION: 12

How many elements are placed in lanthanide and actinide series?

Solution:
QUESTION: 13

Match the following with correct response.
(1) Dobereiner
(2) Newland
(3) Mendeleev
(4) Modern Periodic law

(A) Atomic mass
(C) Atomic number
(D) Octaves

Solution:
QUESTION: 14

In the modern periodic table which are the metals among the first 10 elements?

Solution:
QUESTION: 15

Nitrogen and phosphorus belong to the group 15 of the periodic table. Which of these will be more electronegative?

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QUESTION: 16

Metallic character ____________ down a group

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QUESTION: 17

Arrange the following elements in the decreasing order of their atomic radii

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QUESTION: 18

What is the number of valence electrons in the last element of 3rd period?

Solution:
QUESTION: 19

Match the following with correct response.
(1) Periods
(2) Groups
(3) Eight groups
(4) Eighteen groups

(A) Vertical rows
(B) Mendeleev's Periodic table
(C) Horizontal rows
(D) Modern periodic table

Solution:
QUESTION: 20

Statement A : Electron affinity of fluorine is more than that of chlorine.

Statement B : Carbon monoxide is an acidic oxide.

Solution:
QUESTION: 21

What is the atomic number of the first element of the lanthanide series?

Solution:
QUESTION: 22

Which of the following is not the limitation of Mendeleev’s periodic table?

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QUESTION: 23

Which of the following element forms dipositive ion very easily?

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QUESTION: 24

Which one has the bigger size?

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QUESTION: 25

Give the symbol for the most reactive non-metal of group 17

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QUESTION: 26

Which type of compound is formed by the elements of group 1 and group 17 ?

Solution:
QUESTION: 27

The second ionization energy is greater than the first because

Solution:
QUESTION: 28

Elements having same valence electrons are placed in same group but there is an exception with -

Solution:
QUESTION: 29

P, Q, R are elements of Dobereiner’s triads. If the atomic mass of P is 7 and that of Q is 23, What will be the atomic mass of R?

Solution:
QUESTION: 30

Which element was discovered after Mendeleev gave the periodic table?

Solution: