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….CLASS – 10…., , SONU CLASSES, 46, BHAIRAB DUTTA LANE NANDI BAGAN SALKIA, HOWRAH – 6, CLASS – 10 SUBJECT – PHYSICAL SCIENCE, M. – 8961678250, 7003499494, ______________________________________________, PHYSICAL AND CHEMICAL PROPERTIES OF MATTER, 1. Whose invention is the basis of modern periodic table?, a. Newland, b. Doberenier, c. Moseley, d. Reley, ans- c. Moseley, 2. Mendeleef’s periodic law is based on which property?, a. atomic number, b. atomic mass, c. molecular mass, d. in all these, ans- b. atomic number, 3. Long form of periodic table is based on which fundamental property?, a. atomic number, b. atomic mass, c. molecular mass, d. in all these, ans- a. atomic mass, 4. What are the radio-active elements collectively called ?, a. actinide, b. siderite, c. dolomite, d. lanthanide, ans- a. actinide, 5. Biggest atom according to size in the second period is?, a. lithium, b. carbon, c. oxygen d. flurine, ans- a. lithium, 6. Which is the smallest atom according to size in the third period?, a. sodium, , ….SONU CLASSES….

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….CLASS – 10…., b. magnesium, c. sulphur, d. chlorine, ans- d. chlorine, 7. Moving down along a group metallic property?, a. dose not change, b. decreases, c. increases continuously, d. remains same, ans- c. increases continuously, 8. From left to right in a period. Ionization energy, a. decreases, b. increases, c. some where increases some where decreases, d. remains same, ans- a. increases, 9. Going downwards along a group, ionization energy?, a. decreases, b. increases, c. some where increases some where decreases, d. do not change, ans- a. decreases, 10. Moving from left to right in a period, the metallic property?, a. increases, b. decreases, c. remains same, d. none of these, ans- b. decreases, 11. The number of group in Mendeleev’s modern periodic table is?, a. 6, b. 7, c. 8, d. 9, ans- b. 7, 12. Which one is the most electronegative element?, a. I, b. CI, c. F, d. Br, ans- c. F, 13. Which element are in liquid and solid states respectively in halogen group?, a. CI, F, , ….SONU CLASSES….

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….CLASS – 10…., b. F, I, c. I, Br, d. Br, CI, ans- c. I, Br [I – solid , Br – liquid], 14. Element present in the same group in periodic table have?, a. same atomic number, b. same atomic weight, c. same electronegativity, d. same number of valence electrons, ans- d. same number of valence electrons, 15. In long a form of periodic table the halogens are in the group?, a. 7th, b. 17th, c. 12th, d. 18th, ans- b. 17th, 16. In a same period elements if size decreases, ionization energy?, a. increases, b. decreases, c. remains same, d. may increases or may decreases, ans- a. increases, 17. Which of the following has the highest atomic radius?, a. K, b. H, c. Li, d. Na, ans- a. K, 18. How many group are there in the long periodic table?, a. 7, b. 8, c. 9, d. 18, ans- d. 18, , BEST OF LUCK, ….SONU CLASSES….