This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Periodic Classification Of Elements > Class 10 Science Chapter 5 Periodic Classification Of Elements – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 5 Periodic Classification Of Elements Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What group number are the halogens A) 18. B) 17. C) 1. D) 2. Show Answer Correct Answer: B) 17. 2. Horizontal rows of elements are known as? A) Periods. B) Groups. C) All the above. D) None of the above. Show Answer Correct Answer: A) Periods. 3. All the members in a group of long form of periodic table have the same ..... A) Valency. B) Number of valence electrons. C) Chemical properties. D) All of these. Show Answer Correct Answer: D) All of these. 4. Which of the following elements has maximum metallic character? A) N. B) P. C) Na. D) Li. Show Answer Correct Answer: C) Na. 5. What is the atomic number of element of period 3 and group 17 of the Periodic Table? A) 10. B) 17. C) 21. D) 4. Show Answer Correct Answer: B) 17. 6. A metal 'M' is in the first group of the Periodic Table. What will be the formula of its oxide? A) Mon. B) M2O. C) M2O3. D) MO2. Show Answer Correct Answer: B) M2O. 7. Electronic configuration of Al$^{+3}$ is A) 2, 8, 8, 3. B) 2, 8, 3,. C) 2, 8. D) 2, 8, 8. Show Answer Correct Answer: C) 2, 8. 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? A) Group 4. B) Group 2. C) Group 3. D) Group 1. Show Answer Correct Answer: D) Group 1. 9. How many elements did Newlands assume were present? A) 36. B) 46. C) 26. D) 56. Show Answer Correct Answer: D) 56. 10. Which one is correct about mendeleev's periodic law A) Properties of elements are periodic function of their atomic mass. B) The physical and chemical properties of elements are periodic function of their atomic number. C) Physical properties of elements are periodic function of their atomic weight. D) Chemical properties of elements are periodic function of their atomic number. Show Answer Correct Answer: A) Properties of elements are periodic function of their atomic mass. 11. Halogens belong to ..... group of periodic table A) 12. B) 13. C) 18. D) 17. Show Answer Correct Answer: D) 17. 12. In modern periodic table, as we move from left to right the metallic property ofthe elements ..... A) Increases. B) Does not change. C) Decreases. D) First increases and then decreases. Show Answer Correct Answer: C) Decreases. 13. The process of coating the surface of metalwith a thin layer of zinc is called ..... A) Painting. B) Electroplating. C) Galvanization. D) Thinning. Show Answer Correct Answer: C) Galvanization. 14. In modern periodic table, as we move from left to right along the period, the atomic sizeofthe elements ..... A) Increases. B) Does not change. C) Decreases. D) First increases and then decreases. Show Answer Correct Answer: C) Decreases. 15. The number of naturally occurring elements are A) 94. B) 118. C) 114. D) 86. Show Answer Correct Answer: A) 94. 16. What is the biggest group on the table A) Halogens. B) Nonmetals. C) Metals. D) Metaloids. Show Answer Correct Answer: C) Metals. 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: A) (b) Mg. B) (Q) Al. C) (a) you are. D) (d) Na. Show Answer Correct Answer: A) (b) Mg. 18. Which of the following metal shows similar properties with Magnesium A) Rubidium. B) Potassium. C) Lithium. D) Sodium. Show Answer Correct Answer: C) Lithium. 19. The number of groups and periods in the modern periodic and table respectively, are ..... A) 7 and 9. B) 18 and 7. C) 7 and 18. D) 9 and 7. Show Answer Correct Answer: B) 18 and 7. 20. 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? A) Oxygen. B) Germanium. C) Chloride. D) Silicon. Show Answer Correct Answer: B) Germanium. 21. Eka-boron was named as A) Scandium. B) Titanium. C) Carbon. D) Gallium. Show Answer Correct Answer: A) Scandium. 22. The law of octaves was found to be applicable to elements ..... A) Calcium. B) Potassium. C) Cobalt. D) Oxygen. Show Answer Correct Answer: A) Calcium. 23. Non metals are situated on the ..... side of the periodic table. A) Left. B) Right. C) Centre. D) None of the above. Show Answer Correct Answer: B) Right. 24. An atom has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar? A) P(15). B) F(9). C) Ar(18). D) N(7). Show Answer Correct Answer: B) F(9). 25. Newland classified ..... elements. A) 65. B) 63. C) 118. D) 56. Show Answer Correct Answer: D) 56. 26. Which of the following statements is not a correct statement about the trends when goingfrom left to right across the periods of periodic table ..... ? A) The oxides become more acidic. B) The atoms lose their electrons more easily. C) The number of valence electrons increases. D) The elements become less metallic in nature. Show Answer Correct Answer: B) The atoms lose their electrons more easily. 27. 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 ..... A) Na. B) Mg. C) Al. D) And. Show Answer Correct Answer: B) Mg. 28. According to Mendeleev's periodic law which properties of the elements are the periodic function of their atomic masses? A) Physical properties only. B) Chemical properties only. C) Physical and chemical properties both. D) None of these. Show Answer Correct Answer: C) Physical and chemical properties both. 29. Pick out the chemically most reactive elements from the given triads. A) Li and F. B) Li and Br. C) K and F. D) K and Br. Show Answer Correct Answer: C) K and F. 30. Which of the following set of elements is written in order of their increasing metallic character? A) Be Mg Ca. B) The l. C) C Q N. D) Mg al si si. Show Answer Correct Answer: A) Be Mg Ca. 31. Three elements B, Si and Ge are ..... A) Metals. B) Non-metals. C) Metalloids. D) Metals, non-metals and metalloids. Show Answer Correct Answer: C) Metalloids. 32. Eka silicone is now called A) Germanium. B) Aluminium. C) Gallium. D) Scandium. Show Answer Correct Answer: A) Germanium. 33. 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? A) Oxides become more acidic. B) The atom gains electrons readily. C) The element becomes more metallic. D) There is increase in no of valence electrons. Show Answer Correct Answer: C) The element becomes more metallic. 34. Pick out the correct statement regarding Mendeleev's periodic table. A) Mendeleev predicted periodicity based on the similarities of physical properties of the elements only. B) All the elements fit the classification with increasing atomic weight. C) The elements in a group are not similar in their properties. D) Mendeleev predicted the existence of Eka-Aluminium and Eka-Silicon. Show Answer Correct Answer: D) Mendeleev predicted the existence of Eka-Aluminium and Eka-Silicon. 35. Which is not a metal (a) Na (b) Mg (c) Cs (d) C A) Cs. B) Mg. C) C. D) Na. Show Answer Correct Answer: C) C. 36. The scientist who proposed the modern periodic table ..... A) Newland. B) Henry Moseley. C) Dobereiner. D) Mendeleev. Show Answer Correct Answer: B) Henry Moseley. 37. In mendeleev's periodic table, gap was not left for one of the following elements A) Gallium. B) Beryllium. C) Germanium. D) Scandium. Show Answer Correct Answer: B) Beryllium. 38. An element X has electronic configuration 2, 8, 7. which group and period does it belong to? A) G-16 P-1. B) G-15 P-2. C) G-18 P-4. D) G-17 P-3. Show Answer Correct Answer: D) G-17 P-3. 39. What is the name of group number 1 A) Noble gases. B) Alkaline earth. C) Alkali. D) Halogens. Show Answer Correct Answer: C) Alkali. 40. Newlands relation is called A) A) Musical Law. B) (d) Atomic Mass Law. C) (c) Periodic Law. D) (b) Law of Octaves. Show Answer Correct Answer: D) (b) Law of Octaves. 41. The electronic configuration of an element M is 2, 8, 4. In modern periodic table, the element M is placed in group number ..... A) 2. B) 4. C) 18. D) 14. Show Answer Correct Answer: D) 14. 42. The first periodic table was given by A) Mendeleev. B) Newland. C) Dobernier. D) Moseley. Show Answer Correct Answer: B) Newland. 43. 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. A) Masses, column. B) Masses, rows. C) Numbers, column. D) Numbers, rows. Show Answer Correct Answer: C) Numbers, column. 44. 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. A) 23. B) 47. C) 33. D) 37. Show Answer Correct Answer: A) 23. 45. An element 'A' belongs to the third period and group 16 of the Periodic Table. Find out the valency of A. A) Valency = 2. B) Valency = 1. C) Valency = 6. D) Valency = 3. Show Answer Correct Answer: A) Valency = 2. 46. Name the element whose properties were predicted on the basis of their positions in Mendeleev's periodic table A) Silver. B) Gallium. C) Aluminium. D) Magnesium. Show Answer Correct Answer: B) Gallium. 47. EKABORON, EKA ALUMINIUM AND EKA SILICON REPRESENT WHICH OF THE FOLLOWING SETS OF ELEMENTS? A) Scandium, Gallium, Germany. B) Germany, Scandium, Gallium,. C) Gallium, Scandium, Germany. D) Gallium, Germany, Scandium. Show Answer Correct Answer: A) Scandium, Gallium, Germany. 48. Which of the following have inert gases2 electrons in the outermost shell. A) Ar. B) It is. C) He. D) Kr. Show Answer Correct Answer: C) He. 49. Up to which element, law of octaves found to be applicable A) Cobalt. B) Calcium. C) Potassium. D) Oxygen. Show Answer Correct Answer: B) Calcium. 50. Which is a halogen? A) Uranium. B) Helium. C) Chlorine. D) Oxygen. Show Answer Correct Answer: C) Chlorine. 51. The most abundant noble gas in earth's atmosphere is A) Neon. B) Helium. C) Argon. D) Krypton. Show Answer Correct Answer: C) Argon. 52. In the modern periodic table, what is the classification of elements based on? A) Atomic number. B) Atomic mass. C) Valency. D) None of the above. Show Answer Correct Answer: A) Atomic number. 53. In the modern periodic table elements are arranged by ..... A) Valence electrons. B) Number of isotopes. C) Atomic mass. D) Atomic number. Show Answer Correct Answer: D) Atomic number. 54. Elements of which group are also known as Chalcogens A) Gr 15. B) Gr 16. C) Gr 17. D) Gr 14. Show Answer Correct Answer: B) Gr 16. 55. ..... group contains the member ofhalogen family. A) 15th. B) 18th. C) 16th. D) 17th. Show Answer Correct Answer: D) 17th. 56. Which of the following elements are placed separately at the bottom of the periodic table? A) Inert gases. B) Inner transition elements. C) Transition elements. D) Halogens. Show Answer Correct Answer: B) Inner transition elements. 57. The atomic numbers of elements A, B, C and D are 3, 9, 4 and 8 respectively. Elementshavingmetallic nature among these are ..... A) B and D. B) A and C. C) A and C. D) B and C. Show Answer Correct Answer: B) A and C. 58. How many periods are there in Modern Periodic table? A) 8. B) 7. C) 6. D) 5. Show Answer Correct Answer: B) 7. 59. An atom of an element has the electronic confi-guration 2, 8, 2. To which group does it belong? A) 2nd group. B) 3rd group. C) 6th group. D) 4th group. Show Answer Correct Answer: A) 2nd group. 60. The 'law of octaves' was enunciated by ..... A) Lother Meyer. B) Mendeleev. C) Dobereiner. D) Newlands. Show Answer Correct Answer: D) Newlands. Next →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 5 Periodic Classification Of Elements Quiz 2Class 10 Science Chapter 5 Periodic Classification Of Elements Quiz 3 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books