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Class 10 Science Chapter 5 Periodic Classification Of Elements Quiz 1 (25 MCQs)

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1. What group number are the halogens
2. Horizontal rows of elements are known as?
3. All the members in a group of long form of periodic table have the same .....
4. Which of the following elements has maximum metallic character?
5. What is the atomic number of element of period 3 and group 17 of the Periodic Table?
6. A metal 'M' is in the first group of the Periodic Table. What will be the formula of its oxide?
7. Electronic configuration of Al$^{+3}$ is
8. An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
9. How many elements did Newlands assume were present?
10. Which one is correct about mendeleev's periodic law
11. Halogens belong to ..... group of periodic table
12. In modern periodic table, as we move from left to right the metallic property ofthe elements .....
13. The process of coating the surface of metalwith a thin layer of zinc is called .....
14. In modern periodic table, as we move from left to right along the period, the atomic sizeofthe elements .....
15. The number of naturally occurring elements are
16. What is the biggest group on the table
17. Element 'X' forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:
18. Element X forms a chloride with the formula XCl$_{2}$, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as
19. Which of the following metal shows similar properties with Magnesium
20. The number of groups and periods in the modern periodic and table respectively, are .....
21. 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?
22. Eka-boron was named as
23. The law of octaves was found to be applicable to elements .....
24. Non metals are situated on the ..... side of the periodic table.
25. An atom has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?
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