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Question 1 of 31
1. Question
Which of the following statements about the Modern Periodic Table is correct?
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Question 2 of 31
2. Question
Modern Periodic law is based upon:
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Question 3 of 31
3. Question
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later ?
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Question 4 of 31
4. Question
Which of the following set of elements is written in order of their increasing metallic character?
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Question 5 of 31
5. Question
The non-metals are present:
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Question 6 of 31
6. Question
An element has 12 protons. The group and period to which this element belongs to is
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Question 7 of 31
7. Question
Which one of the following statements is not correct about the trends in the properties of the elements of a group on going down in a group?
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Question 8 of 31
8. Question
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. Write the formula of the compound formed when X reacts with chlorine.
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Question 9 of 31
9. Question
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
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Question 10 of 31
10. Question
Which of the following is the outermost shell for elements of second period?
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Question 11 of 31
11. Question
Dobereiner’s triad arranged the elements with similar properties into:
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Question 12 of 31
12. Question
Element X forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be:
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Question 13 of 31
13. Question
Pick out the chemically most reactive elements from the given triads.
Li, Na, K F, Cl, BrCorrectIncorrect -
Question 14 of 31
14. Question
What is the atomic number of element of period 3 and group 17 of the Periodic Table?
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Question 15 of 31
15. Question
Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?
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Question 16 of 31
16. Question
An atom of an element has the electronic configuration 2,8,2. To which group does it belong?
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Question 17 of 31
17. Question
New lands relation is called
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Question 18 of 31
18. Question
At the time of Mendeleev, the number of elements known was
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Question 19 of 31
19. Question
According to IUPAC recommendations, the number of groups in the long form of the periodic table is:
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Question 20 of 31
20. Question
The most distinctive property of the noble gases is that they are:
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Question 21 of 31
21. Question
Upto which element, the Law of Octaves was found applicable?
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Question 22 of 31
22. Question
As we move from left to right in a period in modern periodic table, Atomic sizes of the elements generally
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Question 23 of 31
23. Question
The arrangement of elements in the Modem Periodic Table is based on their
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Question 24 of 31
24. Question
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If atomic number of carbon is 6, the atomic number of silicon is
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Question 25 of 31
25. Question
In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
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Question 26 of 31
26. Question
The law of the modern periodic table was proposed by:
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Question 27 of 31
27. Question
The elements A, B and C belong to groups 1, 14 and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?
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Question 28 of 31
28. Question
Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right?
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Question 29 of 31
29. Question
Name the neutral atom in the Periodic Table which has the same number of electrons as K+ and Cl–.
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Question 30 of 31
30. Question
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
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Question 31 of 31
31. Question
How many elements are placed in lanthanide and actinide series?
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