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Class 10 Science Chapter 5 Periodic Classification Of Elements Quiz 2 (25 MCQs)

Quiz Instructions

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1. Newland classified ..... elements.
2. Which of the following statements is not a correct statement about the trends when goingfrom left to right across the periods of periodic table ..... ?
3. Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the periodic table as .....
4. According to Mendeleev's periodic law which properties of the elements are the periodic function of their atomic masses?
5. Pick out the chemically most reactive elements from the given triads.
6. Which of the following set of elements is written in order of their increasing metallic character?
7. Three elements B, Si and Ge are .....
8. Eka silicone is now called
9. 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?
10. Pick out the correct statement regarding Mendeleev's periodic table.
11. Which is not a metal (a) Na (b) Mg (c) Cs (d) C
12. The scientist who proposed the modern periodic table .....
13. In mendeleev's periodic table, gap was not left for one of the following elements
14. An element X has electronic configuration 2, 8, 7. which group and period does it belong to?
15. What is the name of group number 1
16. Newlands relation is called
17. The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in group number .....
18. The first periodic table was given by
19. Periodic law states that the elements are arranged according to their atomic ..... so that elements with similar chemical properties are in the same ..... and properties repeat periodically.
20. A, B and C are elements of Dobereiner's triad. If the atomic mass of A is 7 and that of C is 39, what should be the atomic mass of B.
21. An element 'A' belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
22. Name the element whose properties were predicted on the basis of their positions in Mendeleev's periodic table
23. EKABORON, EKA ALUMINIUM AND EKA SILICON REPRESENT WHICH OF THE FOLLOWING SETS OF ELEMENTS?
24. Which of the following have inert gases2 electrons in the outermost shell.
25. Up to which element, law of octaves found to be applicable
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