Test-MCQ Class 10-NCERT -Science-Chapter 5-Test-3

1. Upto which element, the Law of Octaves was found to be applicable. 

2. Which of the following statements about the Modern Periodic Table is correct:

3. Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?

4. Which of the following gives the correct increasing order of the atomic radii of O, F and N ?

5. Which of the following elements does not lose an electron easily.

6. Arrange the following elements in the order of their increasing nonmetallic character Li, O, C, Be, F

7. Three elements B, Si and Ge are

8. On moving from left to right in a period in the periodic table, the size of the atom.

 9. When we move from left to right across a period , the electron affinity.

10. Group 17 elements are also called as

11. Which of the following elements is a semi – metal ?

12. Which of the following is a dobereiner s triad?

13. The most metallic element in the fourth period is:

14. The longest and the shortest periods are:

15. Which of the following hydroxides are most basic:

16. The law of triads is not applicable on

17.Elements with atomic number 15 and mass number 31 is present in:

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