NCERT Class 10 Chapter 4 Classification of Elements CBSE Board Sample Problems Multiple Choice Question (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question

The electronic configuration of an element M is 2,8, and 4. In modern periodic table, the element M is placed in

4th group

2nd group

14th group

18th group

Question

Element (forms a chloride with the formula w4iich is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as

1. Na

2. Mg

3. AI

4. Si

Question

Elements P, Q, R and S have atomic numbers 11,15, 17 and 18 respectively, which of them are reactive non-metals?

1. P and Q

2. P and R

3. Q and R

4. R and S

Question

Which of the following elements will form an acidic oxide?

1. An element with atomic number 7

2. An element with atomic number 3

3. An element with atomic number 12

4. An element with atomic number 19

Question

Three elements B, Si and Ge are:

1. Metal

2. non - metals

3. Metalloids

4. Metals, non-metals and metalloids

Question

The valency of an element with atomic number 8 is

7

6

2

1

Question

An element X makes an oxide with the formula . This element will be in the same group as:

Na

Mg

AI

CI

Question

For the given question, two statements are given — one labeled Assertion (A) and the other labeled Reason (R) . Select the correct answer to these questions from codes (i) , (ii) , (iii) and (iv) as given below:

Assertion: Potassium has a bigger atomic radius than Lithium

Reason: Atomic radius decreases along a period

Both A and R are true and R is correct explanation of the assertion.

Both A and R are true but R is not the correct explanation of the assertion.

A is true but R is false.

A is false but R is true.

Question

An element lies in third period and second group of the periodic table.

Select the false statement about the atom of this element.

It has three shells

It has two valence electrons

It has three Valence electrons

It has 12 electron,

Question

Which of the following statement about modern periodic table is correct?

It has 18 horizontal rows called Periods

It has 7 vertical columns called Periods

It has seven horizontal rows called groups.

It has 18 vertical columns called groups

Question

For the given question numbers, two statements are given one labeled Assertion (A) and the other the labeled Reason (R) . Select the correct answer to these questions from codes (i) . (ii) , (iii) and (iv) as given below-

Assertion: Elements belonging to the same group show similarity in chemical properties.

Reason: Elements of the same group have same number of valence electrons.

Both A and R are true and R is correction explanation of the assertion.

Both A and R are true and R is not the correct explanation of the assertion

A is true but R is false

A is false but R is true

Question

Arrange the following atoms in the ascending order of atomic radius

F, CI, O, C

C, O, F, CI

O, C, F, CI

F, O, C, CI

Question

Which of the following elements does not lose an electron easily?

(a) Na

(b) F

(c) Mg

(d) AI

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