eVidyarthi

Modern Periodic Law Quizz

1. Lothar Meyer arranged the elements in order of increasing:
 
 
 
 

Question 1 of 20

2. Law of Octaves was proposed by:
 
 
 
 

Question 2 of 20

3. Law of Triads is applicable to which set of elements?
 
 
 
 

Question 3 of 20

4. In Mendeleev’s periodic table, the groups were divided into how many subgroups?
 
 
 
 

Question 4 of 20

5. Modern periodic table is divided into:
 
 
 
 

Question 5 of 20

6. Moseley performed experiments and studied the frequencies of which radiations emitted from the elements?
 
 
 
 

Question 6 of 20

7. Among the following statements the one that is not true about Mendeleev’s Periodic Table is:
 
 
 
 

Question 7 of 20

8. Which scientist proposed that atomic number is more fundamental property of an element than its atomic mass?
 
 
 
 

Question 8 of 20

9. Johann Dobereiner classified elements in group of three elements called as
 
 
 
 

Question 9 of 20

10. In the modern periodic table, which period contains 32 elements?
 
 
 
 

Question 10 of 20

11. Horizontal rows in the periodic table are called:
 
 
 
 

Question 11 of 20

12. The second and third period of the modern periodic table contains how many elements?
 
 
 
 

Question 12 of 20

13. Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:
 
 
 
 

Question 13 of 20

14. According to Dobereiner’s law of triads the number of elements present in each group is:
 
 
 
 

Question 14 of 20

15. Lothar Meyer proposed that on arranging the elements in order of increasing atomic weights; similarities appear in which type of properties?
 
 
 
 

Question 15 of 20

16. Eka silicon predicted by Mendeleev is which element:
 
 
 
 

Question 16 of 20

17. Eka aluminium predicted by Mendeleev is which element?
 
 
 
 

Question 17 of 20

18. The basis of long form of periodic table is:
 
 
 
 

Question 18 of 20

19. Mendeleev predicted the existence of which element/elements in the periodic table?
 
 
 
 

Question 19 of 20

20. At present how many elements are known?
 
 
 
 

Question 20 of 20