Science : Ch 05 – Periodic of Classification of Elements

This test is designed based on NCERT Syllabus for Class 10 Topics : Periodic of Classification of Elements

Each time random 15 questions will be displaced
So retake the quiz till you have mastered all the questions

1 / 15

Which of the following declaration about the modern periodic table is accurate?

It has 18 horizontal rows known as periods.

It has 7 vertical columns rows known as periods

It has 18 vertical columns known as groups.

It has 7 horizontal rows known as groups.

2 / 15

In Mendeleev’s periodic table, gaps were left for the elements to be discovered later. Which of the subsequent element found a place in the periodic table later?

Germanium

Chlorine

Oxygen

Silicon

3 / 15

As claimed by Mendeleev’s periodic law, the elements were arranged in the periodic table in the order of:

Increasing atomic number

Decreasing atomic number

Increasing atomic masses

Decreasing atomic masses

4 / 15

Which of the subsequent is the outermost shell for elements of period 2?

K shell

L shell

M shell

N shell

5 / 15

Which of the following are the characteristics of isotopes of an element?

Isotopes of an element have the same atomic masses.

Isotopes of an element have the same atomic number

Isotopes of an element show the same physical properties.

Isotopes of an element show the same chemical properties.

2 and 4

1 and 3

2 and 3

1 and 4

6 / 15

Arrange the following elements in sequence of their increasing non-metallic character Li, O, C, Be and F.

F < O < C < Be < Li

Li < Be < C < O < F

F < O < C < Be < Li

F < O < Be < C < Li

7 / 15

What type of oxide would Eka-aluminium form?

EO₃

E₃O₂

E₂O₃

EO

8 / 15

Arrange these elements in decreasing order of their atomic radii

Carbon Nitrogen Oxygen Fluorine

Fluroine oxygen carbon Nitrogen

Nitrogen Oxygen Carbon Fluroine

Oxygen Nitrogen Fluroine Carbon

9 / 15

Arrange these elements in increasing order of their atomic radii

Boron Lithuim Beryllium

Beryllum Lithium Boron

Lithium Beryllium Boron

Lithuim Boron Beryllium

10 / 15

Which one of the following does not increase while moving down in group of the periodic table?

Atomic radius

Metallic character

Valence

Number of shells in an element

11 / 15

Modern Periodic Law States that

Properties of elements are a periodic function of their atomic masses

Properties of elements are a periodic function of their atomic number

Properties of elements are a periodic function of their atomic size

Properties of elements are a periodic function of their Mass number

12 / 15

How many metals are present in second period of periodic table?

10

6

8

2

13 / 15

The atomic number of an element is 20, its electronic configuration.

2, 8, 4, 2,

2, 8, 8, 2,

4, 8, 8, 2,

8, 8, 2,2

14 / 15

The atomic number of an element is 20, its valency is

2

8

16

4

15 / 15

Arrange the following elements in the order of their increasing non-metallic character Li, O, C, Be and F

F < C < O < Be < Li

F < O < C < Be < Li

Li < Be < C < O < F

Li < Be < C < F < O

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Science : Ch 05 – Periodic of Classification of Elements

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