Unit 6 Structure of Atoms – General Science online quiz class 7 Leave a Comment / All Quiz Class 7 General Science, Chapter # 6, online quiz, test with answers Click here to prepare for Quiz 0% 0 votes, 0 avg 11 Unit 6 Structure of Atoms Class 7 General Science, Chapter # 6, Online Quiz 1 / 67 Category: General Science 1. Atom is electrically ____ A. negative B. Positive C. consumer D. Neutral 2 / 67 Category: General Science 2. Atoms of same element having same number of protons but different number of neutrons are called: A. ION B. Valency C. Chemical formula D. Isotopes 3 / 67 Category: General Science 3. ____ are the basic building block of matter and can take part in a chemical reaction. A. Molecule  B. Atom C. Sun light D. Soil 4 / 67 Category: General Science 4. ______ have a positive (+) charge A. Protons   B. Neutrons C. Electrons D. Atom 5 / 67 Category: General Science 5. With the help of chemical formula we can find: A. Name of elements present in the molecule. B. Number of atoms of each element. C. Composition of a compound. D. All of these 6 / 67 Category: General Science 6. Electron revolve around the nucleus in particular paths called A. orbit B. shells C. Both A & B D. None of these 7 / 67 Category: General Science 7. The number of protons and the number of electrons are ___ A. Opposite B. Invisible C. Close D. Equal 8 / 67 Category: General Science 8. The first orbit near the nucleus is: A. L-shell B. K-shell C. M-shell D. N-shell 9 / 67 Category: General Science 9. ____ isotopes are used to detect the leakage of pipelines. A. Cobalt B. iodine C. Carbon (C-14) D. Radio 10 / 67 Category: General Science 10. Atomic number is denoted by _____ A. âAâ B. âKâ C. âMâ D. âZâ 11 / 67 Category: General Science 11. These have same number of protons in each atom but the neutron number can vary: A. Isotopes B. Molecules C. Ions D. Isobars 12 / 67 Category: General Science 12. _____ reside in the nucleus. A. Protons B. Neutrons  C. Both A & B D. None of these 13 / 67 Category: General Science 13. Heavy hydrogen is: A. Protium âHâ B. Deuterium âDâ C. Tritium âTâ D. None of these 14 / 67 Category: General Science 14. Law of constant composition was presented by: A. Sir john Martial B. Democritus C. Alfarabi D. Joseph Proust 15 / 67 Category: General Science 15. The maximum number of electrons in fourth orbit N= A. 18 B. 25 C. 32 D. 42 16 / 67 Category: General Science 16. ____ revolve in orbits around the nucleus. A. Protons  B. Neutrons C. Electrons D. None of these 17 / 67 Category: General Science 17. Sub-atomic or fundamental particles of atom have ____ types: A. 3 B. 6 C. 9 D. 2 18 / 67 Category: General Science 18. The particle that carries a negative electrical charge. A. Proton B. Neutron C. Nucleus D. Electron 19 / 67 Category: General Science 19. The maximum number of electrons in first orbit K= A. 1 B. 3 C. 2 D. 4 20 / 67 Category: General Science 20. The maximum number of electrons in second orbit L= A. 2 B. 4 C. 6 D. 8 21 / 67 Category: General Science 21. The general formula for electrons distribution is: A. 2n B. 2+n C. 2n2  D. 2n4 22 / 67 Category: General Science 22. The representation of a molecule of a compound in the form of symbols is called: A. Cation B. Anion C. Valency D. Chemical formula 23 / 67 Category: General Science 23. Physical properties of some isotopes may be: A. Different B. Same C. Few D. Many 24 / 67 Category: General Science 24. Each sample of carbon dioxide contains: A. 72.72% Oxygen B. 27.27% carbon C. Both of the above D. None of the above 25 / 67 Category: General Science 25. For treatment of goiter, an isotope of ____ is used: A. Cobalt B. iodine C. Carbon D. Uranium 26 / 67 Category: General Science 26. Atoms containing less than four electrons in its outermost shell, its valency is equal to the number of: A. Electrons present in K-shell B. Electrons present in valence shell C. Electrons present in M-shell D. Electrons present in L-shell 27 / 67 Category: General Science 27. ____ depends upon the number of electrons present in the outermost shell. A. ION B. Isotopes C. Valency D. Chemical formula 28 / 67 Category: General Science 28. Every simple of pure substance always contains same elements in fixed proportion regardless of: A. Its source and method of preparation B. Its physical and chemical change C. Both of the above D. None of the above 29 / 67 Category: General Science 29. Protons and neutrons reside in the nucleus, thus they are also known as: A. Element  B. Nucleus  C. Neutral D. Nucleons  30 / 67 Category: General Science 30. Deuterium âDâ has one proton, ____ neutron and one electron A. 1 B. 2 C. 3 D. no 31 / 67 Category: General Science 31. Radioactive isotope of hydrogen is: A. Protium âHâ B. Deuterium âDâ C. Tritium âTâ D. None of these 32 / 67 Category: General Science 32. If an electron or more than one electrons are added to an atom, it becomes a negative ion which is also known as: A. Cation B. Anion C. Valency D. Chemical formula 33 / 67 Category: General Science 33. An atom of carbon contains 6 protons and 6 neutrons, its mass number will be A. 12 B. 6 C. 18 D. 24 34 / 67 Category: General Science 34. The combining capacity of the atoms to form molecules either with same or different elements is known as A. ION B. Valency C. Chemical formula D. Isotopes 35 / 67 Category: General Science 35. The atoms of same elements which have same atomic number but different mass number are called: A. ION B. Valency C. Chemical formula D. Isotopes 36 / 67 Category: General Science 36. The sum of the number of protons and number of neutrons A. Mass number B. Atomic mass C. Both of them D. None of these 37 / 67 Category: General Science 37. ____ is a charged particle that is formed by the removal or addition of one or more electrons from an atom or molecule. A. ION B. Valency C. Chemical formula D. Isotopes 38 / 67 Category: General Science 38. The outermost orbit cannot have more than _____ electrons A. 18 B. 8 C. 32 D. 2 39 / 67 Category: General Science 39. Water always contain: A. 11.11% hydrogen B. 88.88% oxygen C. Both of the above D. None of the above 40 / 67 Category: General Science 40. Protons and neutrons are responsible for most of the _____ A. Atomic number B. Atomic Mass C. Both A & B D. None of these 41 / 67 Category: General Science 41. Sodium has one electron in its outermost shell, so the valency of sodium is: A. 2 B. 0 C. 1 D. 3 42 / 67 Category: General Science 42. Tritium isotope has one proton, ____ neutron and one electron. A. 1 B. 2 C. 3 D. no 43 / 67 Category: General Science 43. ____ have a negative charge. A. Protons B. Neutrons C. Electrons D. None of these 44 / 67 Category: General Science 44. The word atom is derived from the Greek word âatomosâ which means: A. Small B. Smallest C. Things D. Indivisible 45 / 67 Category: General Science 45. The idea of atoms was first proposed by the Greek philosopher Democritus in A. 3rd century BC B. 5th Century AD C. 3rd century AD D. 5th Century BC 46 / 67 Category: General Science 46. ______ no charge. A. Protons  B. Neutrons C. Electrons D. Atom  47 / 67 Category: General Science 47. Ions have ____ types: A. 1 B. 2 C. 3 D. 4 48 / 67 Category: General Science 48. Some isotopes are radioactive i.e they âradiateâ: A. water B. Energy  C. Light D. Air 49 / 67 Category: General Science 49. The center or core of an atom is called: A. Orbital B. Nucleus C. Proton D. Neutron 50 / 67 Category: General Science 50. _____ is the number of protons or electrons A. Atomic mass B. Atomic number C. Atom D. Neutrons 51 / 67 Category: General Science 51. Mass number is nearly equal to atomic mass of an atom and is denoted by: A. âAâ B. âKâ C. âMâ D. âZâ 52 / 67 Category: General Science 52. An isotope of ____ is used to determine the age of old material like trees. A. Cobalt B. iodine C. Carbon (C-14) D. Uranium 53 / 67 Category: General Science 53. The chemical properties of isotopes are the: A. Different B. Same C. Few D. Many 54 / 67 Category: General Science 54. Chlorine has seven electrons in its outermost shell, so the valency of chlorine is: A. 1 B. 2 C. 3 D. 4 55 / 67 Category: General Science 55. Hydrogen has ____ isotopes: A. 1 B. 2 C.  3 D.  4 56 / 67 Category: General Science 56. The idea that all matter is made up of atoms was first proposed by the ____ philosopher. A. Latin B. British C. Greek D. French  57 / 67 Category: General Science 57. ____ has mass and occupies space A. Matter B. Atom C. Action and reaction D. Inertia 58 / 67 Category: General Science 58. If the outermost shell has more than four electrons, its valency will be equal to 8 minus the number of: A. Electrons present in K-shell B. Electrons present in the outermost shell C. Electrons present in M-shell D. Electrons present in L-shell 59 / 67 Category: General Science 59. Ordinary naturally occurring hydrogen contains the largest percentage of: A. Protium âHâ B. Deuterium âDâ C. Tritium âTâ D. None of these 60 / 67 Category: General Science 60. An isotope of ____ is used as fuel in a nuclear reactor. A. Cobalt B. Goiter C. Carbon D. Uranium 61 / 67 Category: General Science 61. The number of tritium isotope is one in ____ millions. A. 10 B. 15 C. 20 D. 25 62 / 67 Category: General Science 62. An isotope of ____ is used in the treatment of cancer. A. Cobalt B. Goiter C. Carbon D. Uranium 63 / 67 Category: General Science 63. Atoms of different elements with different atomic numbers but have the same mass number are called: A. Isobars B. Valency C. Chemical formula D. Isotopes 64 / 67 Category: General Science 64. The maximum number of electrons in third orbit M= A. 18 B. 14 C. 10 D. 8 65 / 67 Category: General Science 65. An element has seven electrons in its valence shell. Its valency is: A. 7 B. 0 C. 1 D. 8 66 / 67 Category: General Science 66. Protium hydrogen has one proton, ____ neutron and one electron. A. 1 B. 2 C. 3 D. no 67 / 67 Category: General Science 67. If an electron or more than one electrons are removed from an atom, it become a positive ion which is also known as: A. Cation B. Anion C. Valency D. Chemical formula Your score is The average score is 62% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
