MCQ Class 11 Chemistry Chapter 3 Classification Of Elements And Periodicity In Properties

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MCQ’s For All Chapters – Chemistry Class 11th

1. Who was the first scientist to propose the Law of Triads?

Question 1 of 20

2. According to Newlands’ Law of Octaves, every eighth element had properties similar to the:

Question 2 of 20

3. What was the main basis of Mendeleev’s original Periodic Law?

Question 3 of 20

4. Which element did Mendeleev place in Group VII despite having a lower atomic weight than tellurium?

Question 4 of 20

5. Which scientist established that atomic number is a more fundamental property than atomic mass?

Question 5 of 20

6. According to the Modern Periodic Law, the physical and chemical properties of elements are periodic functions of their:

Question 6 of 20

7. How many groups are present in the modern long form of the Periodic Table?

Question 7 of 20

8. How many elements are present in the fourth period?

Question 8 of 20

9. Which element is placed separately at the top of the Periodic Table because of its special behaviour?

Question 9 of 20

10. Which block contains the elements of Groups 3 to 12?

Question 10 of 20

11. Which block contains the lanthanoids and actinoids?

Question 11 of 20

12. Which of the following is a characteristic property of noble gases?

Question 12 of 20

13. Which property generally increases as we move down a group?

Question 13 of 20

14. Which species is smaller than its parent atom?

Question 14 of 20

15. What does ionization enthalpy measure?

Question 15 of 20

16. How does ionization enthalpy generally change across a period from left to right?

Question 16 of 20

17. Which group generally has very high negative electron gain enthalpies?

Question 17 of 20

18. Which element was assigned an electronegativity value of 4.0 on the Pauling scale?

Question 18 of 20

19. What is the general trend of electronegativity across a period from left to right?

Question 19 of 20

20. Which of the following elements is classified as a metalloid?

Question 20 of 20


 

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