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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 affirmation about the modern periodic table are inappropriate?

  1. The elements in the modern periodic table are arranged on the basis of their decreasing atomic numbers
  2. The elements in the modern periodic table are arranged on the basis of their increasing atomic masses.
  3. Isotopes are placed in adjoining group(s) in the periodic table.
  4. The elements in the modern periodic table are arranged on the basis of their increasing atomic number

2 / 15

An element X is forming acidic oxide. Its most expected position in the modern periodic table is:

3 / 15

On the basis of electronic confguration of X9 5 , the group number and period of the element ‘X‘ is:

4 / 15

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the identical group?

5 / 15

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

6 / 15

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

7 / 15

Which of the following gives the accurate increasing order of the atomic radii of O, F and N?

8 / 15

Which among the following elements has the largest atomic radii?

9 / 15

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

  1. Isotopes of an element have the same atomic masses.
  2. Isotopes of an element have the same atomic number
  3. Isotopes of an element show the same physical properties.
  4. Isotopes of an element show the same chemical properties.

10 / 15

What type of oxide would Eka-aluminium form?

11 / 15

Arrange these elements in decreasing order of their atomic radii

12 / 15

Arrange these elements in increasing order of their atomic radii

13 / 15

Arrange these elements in increasing order of their atomic radii

14 / 15

The formulae of chlorides of Eka-aluminium, the elements predicted by Mendeleev.

15 / 15

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

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