This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many degenerate orbitals does a d-sub shell contain? A) 3. B) 5. C) 7. D) 1. Show Answer Correct Answer: B) 5. 2. What does the atomic number of an atom represent? A) Number of Electrons. B) Number of Neutrons. C) Atomic Mass. D) Number of Protons. Show Answer Correct Answer: D) Number of Protons. 3. The no. of electrons gained, lost or shared, gives us directly the ..... A) Valency. B) Combining Power. C) Combining Capacity. D) All of the above. Show Answer Correct Answer: D) All of the above. 4. Protons have a negative electrical charge A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Which statement accurately describes the atoms of a specific element? A) An Oxygen (O) atom contains 8 protons inside the nucleus, and 8 neutrons outside the nucleus. B) A Beryllium (Be) atom contains 4 electrons outside the nucleus, and 5 neutrons inside the nucleus. C) An Aluminum (Al) atom contains 27 electrons and 27 protons inside the nucleus. D) A Zinc (Zn) atom contains 30 protons inside the nucleus, and 31 electrons outside the nucleus. Show Answer Correct Answer: B) A Beryllium (Be) atom contains 4 electrons outside the nucleus, and 5 neutrons inside the nucleus. 6. THE CONFIUGURATION OF CARBON (Z=6) is A) 2, 4. B) 3, 3. C) 2, 6. D) None. Show Answer Correct Answer: A) 2, 4. 7. The orbital having same no of spherical nodes are A) 3p, 4d. B) 6s, 5p. C) 4p, 3d. D) 2s, 3d. Show Answer Correct Answer: A) 3p, 4d. 8. First University established in India? A) Delhi University. B) Madras University. C) University of Calcutta. D) Banaras Hindu University. Show Answer Correct Answer: C) University of Calcutta. 9. These are the SMALLEST subatomic particles A) Proton. B) Neutron. C) Electron. D) None of the above. Show Answer Correct Answer: C) Electron. 10. Isotopes are atoms of the same element with different numbers of ..... A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: B) Neutrons. 11. Which element has 5 more protons than Oxygen (O)? A) Chlorine. B) Lithium. C) Aluminum. D) Silicon. Show Answer Correct Answer: C) Aluminum. 12. What is the typical units of measurement for the "E" in the following equation:E$_{}$$_{photon}$= h x f A) Joules. B) Meters/seconds. C) Hertz. D) Meters. Show Answer Correct Answer: A) Joules. 13. The angular momentum quantum number indicates the A) Main energy level of an orbital. B) Shape of an orbital. C) Direction of the spin of the electron in its orbital. D) Orientation an orbital around the nucleus. Show Answer Correct Answer: B) Shape of an orbital. 14. Which postulate is correct in J J Thomson model A) Neutrality of atom. B) Atom is positive sphere having electrons embedded in it. C) All the above. D) None of the above. Show Answer Correct Answer: A) Neutrality of atom. 15. Easy to shape or bend A) Malleable. B) Non-Metal. C) Play Doh. D) Lego. Show Answer Correct Answer: A) Malleable. 16. Which of the following series of hydrogen spectrum is present in visible region A) Lymann series. B) Balmer series. C) Brackett series. D) Paschen series. Show Answer Correct Answer: B) Balmer series. 17. In the Thomson's model of atom, which of the following statments are correct? (i) the mass of the atom is assumed to be uniformaly distributed over the atom (ii) the positive charge is assumed to be uniformaly distributed over the atom (iii) the electrons are uniformaly distributed in the positively charged sphere (iv) the electrons attract each other to stabilise the atom A) (i), (ii) and (iii). B) (i) and (iii). C) (i) and (iv). D) (i), (iii) and (iv). Show Answer Correct Answer: A) (i), (ii) and (iii). 18. To which orbit the electron will jump in hydrogen atom on absorbing 12.1 ev of energy? A) 2. B) 4. C) 3. D) 5. Show Answer Correct Answer: C) 3. 19. How many electrons are there in an atom of potassium with mass number 39 and atomic number 19? A) 20. B) 9. C) 39. D) 19. Show Answer Correct Answer: D) 19. 20. The negatively charged particles in an atom that orbit around the nucleus are called A) Protons. B) Neutrons. C) Electrons. D) None of these. Show Answer Correct Answer: C) Electrons. 21. Although neutron and proton have nearly the same mass, yet on exact comparison, which of them have a greater mass? A) Proton. B) Neutron. C) All the above. D) None of the above. Show Answer Correct Answer: B) Neutron. 22. Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order A) (i) and (ii) and (iii). B) (ii), (iii) and (i). C) (ii), (i) and (iii). D) (iii), (ii) and (i). Show Answer Correct Answer: C) (ii), (i) and (iii). 23. How many electrons are in the element, Oxygen, with the atomic number of 8? A) 10. B) 7. C) 9. D) 8. Show Answer Correct Answer: D) 8. 24. Electrons occupying the same orbital must have opposite spin. This statement refers to ..... A) Hund's rule. B) The Aufbau Principle. C) Pauli's exclusion principle. D) The quantum theory. Show Answer Correct Answer: C) Pauli's exclusion principle. 25. Which series in the hydrogen spectrum lies in the visible region? A) Lyman. B) Paschen. C) Brackett. D) Balmer. Show Answer Correct Answer: D) Balmer. 26. In the ground state, an element has 13 electrons in its M-shell. The element is ..... A) Iron. B) Nickel. C) Copper. D) Chromium. Show Answer Correct Answer: D) Chromium. 27. Shape of d orbital is A) Spherical. B) Single dumble. C) Double dumble. D) None of these. Show Answer Correct Answer: C) Double dumble. 28. Which of the two will be chemically more reactive, Sulphur(S) with atomic number 16 or Chlorine (Cl) with atomic number 17? A) Chlorine. B) Sulphur. C) Both are equally reactive. D) Can't say. Show Answer Correct Answer: A) Chlorine. 29. Which element is represented by the symbol 'Fe'? A) Fermium. B) Fluorine. C) Iron. D) Francium. Show Answer Correct Answer: C) Iron. 30. The ratio of the frequencies of the long wavelength limits of Lyman and Balmer series of hydrogen spectrum is A) 4:1. B) 5:27. C) 1:4. D) 27:5. Show Answer Correct Answer: D) 27:5. 31. Total number of orbitals associated in shell will be calculated by formula ..... A) 2n$^{2}$. B) N$^{2}$. C) N. D) None of the above. Show Answer Correct Answer: B) N$^{2}$. 32. (-l to +l ) is the formula for which Quantum Number A) Principle quantum number. B) Azimuthal quantum number. C) Magnetic Quantum number. D) Spin quantum number. Show Answer Correct Answer: B) Azimuthal quantum number. 33. All the following are basic form of matter, except A) Chemical. B) Liquid. C) Gas. D) Solid. Show Answer Correct Answer: A) Chemical. 34. Which element in the compound Li$_{3}$SB$_{2 }$ would have the most protons in its nucleus? A) Li. B) S. C) B. D) None of the above. Show Answer Correct Answer: B) S. 35. Elements having valency 'one' are: A) Always metals. B) Always non-metals. C) Always metalloids. D) Either metals or non-metals. Show Answer Correct Answer: D) Either metals or non-metals. 36. The smallest particle into which an element can be divided and still be the same substance is called a(n) A) Electron. B) Nucleus. C) Neutron. D) Atom. Show Answer Correct Answer: D) Atom. 37. Atom X and atom Y have similar chemical properties. If the proton number of atom X is 12, what is the likely proton number of atom Y? A) 20. B) 10. C) 5. D) 14. Show Answer Correct Answer: A) 20. 38. The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is ..... A) 19. B) 10. C) 9. D) 28. Show Answer Correct Answer: C) 9. 39. Which of the following best describes an ion? A) An atom with a different number of neutrons. B) An atom with a different atomic number. C) An atom with a different number of protons. D) An atom with a different number of electrons. Show Answer Correct Answer: D) An atom with a different number of electrons. 40. What is the center of an atom containing protons and neutrons? A) Electron cloud. B) Neutron. C) Nucleus. D) Proton. Show Answer Correct Answer: C) Nucleus. 41. How many protons are in the element, "Sodium?" A) 13. B) 11. C) 23. D) 14. Show Answer Correct Answer: B) 11. 42. Which subatomic particle has a neutral or no charge? A) Protons. B) Neutrons. C) Electrons. D) All of them are neutral. Show Answer Correct Answer: B) Neutrons. 43. One of the lines in the spectrum of hydrogen atom has a wave number of 7.80 x 10$^{14}$ s$^{-1}$. What is the frequency of this line? (c = 3 x 10$^{8}$ ms$^{-1}$) A) 3.84 x 10$^{13}$ s$^{-1}$. B) 2.34 x 10$^{14}$ s$^{-1}$. C) 2.34 x 10$^{13}$ s$^{-1}$. D) 3.84 x 10$^{14}$ s$^{-1}$. Show Answer Correct Answer: B) 2.34 x 10$^{14}$ s$^{-1}$. 44. Anode rays/ positive rays were discovered by a German scientist in 1886 in a discharge tube; The name of the scientist and the cathode used was: A) Eugene Goldstein, a solid disc placed opposite to anode. B) William Crooke, a solid disc placed opposite to anode. C) Eugene Goldstein, a perforated disc placed opposite to anode. D) William Crooke, a perforated disc placed opposite to anode. Show Answer Correct Answer: C) Eugene Goldstein, a perforated disc placed opposite to anode. 45. True or False:The electron cloud is the lightest part of an atom because it is made up mostly of empty space. A) True. B) False. C) Maybe. D) None of the above. Show Answer Correct Answer: A) True. 46. If an electron jumps from 1st orbital to 3rd orbital, then it will A) Absorb energy. B) Release energy. C) No gain of energy. D) None of these. Show Answer Correct Answer: A) Absorb energy. 47. Atomic number means A) No of electrons or no of protons. B) Just no of protons. C) Just no of electrons. D) None. Show Answer Correct Answer: A) No of electrons or no of protons. 48. A substance made up of atoms of two or more elements that are chemically combined. A) Atom. B) Compound. C) Element. D) Nucleus. Show Answer Correct Answer: B) Compound. 49. Plum pudding model is given by A) J J Thomson. B) E Goldstein. C) Rutherford. D) Bohr. Show Answer Correct Answer: A) J J Thomson. 50. In the nucleus of an atom, the mass is the greatest because ..... A) Electrons and protons are located inside, and they are the largest subatomic particles. B) Protons and Neutrons are located inside, and they are the smallest subatomic particles. C) Protons and Neutrons are located inside, and they are the largest subatomic particles. D) None of the above. Show Answer Correct Answer: C) Protons and Neutrons are located inside, and they are the largest subatomic particles. 51. How many subatomic particles does an atom contain? A) 1. B) 2. C) 4. D) 3. Show Answer Correct Answer: D) 3. 52. Objects that are electrically neutral become when they lose electrons. A) Neutral. B) Positive. C) Doubly charged. D) Negative. Show Answer Correct Answer: B) Positive. 53. Number of shells are given by the formula: A) N. B) N$^{2}$. C) -l to +l. D) 2n$^{2}$. Show Answer Correct Answer: A) N. 54. What is the overall charge of an atom? A) Zero. B) Positive. C) Neutral. D) Negative. Show Answer Correct Answer: C) Neutral. 55. Where are the electrons located? A) Outside the nucleus in the proton cloud. B) Inside the nucleus. C) Outside the nucleus in the electron cloud. D) Inside the nucleus in the electron cloud. Show Answer Correct Answer: C) Outside the nucleus in the electron cloud. 56. Which of the following statements about Rutherford's model of atom are correct? A) The nucleus is neutral from protons. B) The nucleus is negatively charged by electrons. C) The nucleus is positively charged by protons. D) There is no nucleus. Show Answer Correct Answer: C) The nucleus is positively charged by protons. 57. What is the value of Planck's constant? A) $6.63\times10^{-34}$. B) $3\times10^8$. C) $6.63\times10^{34}$. D) $3\times10^{-8}$. Show Answer Correct Answer: A) $6.63\times10^{-34}$. 58. Which element was chosen as the standard reference for measuring atomic masses A) Carbon. B) Oxygen. C) Carbon-12 isotope. D) None of these. Show Answer Correct Answer: C) Carbon-12 isotope. 59. What is the symbol for BORON? A) Bn. B) Bo. C) B. D) Br. Show Answer Correct Answer: C) B. 60. The first person to propose a theory about an atom called the Atomic Theory was A) Dalton. B) Aristotle. C) Democritus. D) Rutherford. Show Answer Correct Answer: A) Dalton. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 1Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 2Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 4Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 5Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 6Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 7Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 8Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books