This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The principal quantum number, n, represents the: A) Spin value. B) Suborbital value. C) Energy level. D) Magnetic value. Show Answer Correct Answer: C) Energy level. 2. Canal Rays travel from A) Anode to cathode. B) Cathode to anode. C) Remain stationary. D) None of the above. Show Answer Correct Answer: B) Cathode to anode. 3. The region surrounding the center of the atom that is mostly empty space A) Ion. B) Isotope. C) Nucleus. D) Electron cloud. Show Answer Correct Answer: D) Electron cloud. 4. A subatomic particle that orbits an atom's nucleus, has a negative charge, and has very little mass A) Proton. B) Neutron. C) Electron. D) Isotope. Show Answer Correct Answer: C) Electron. 5. Rutherford's planet-like structure was defective and unsatisfactory because A) Moving e-accelerate towards the nucleus. B) Continuous spectrum. C) The behaviour of electron remain unexplained. D) All Are Correct. Show Answer Correct Answer: D) All Are Correct. 6. Neutrons are found in ..... except ..... A) Nucleus, kripton. B) Nucleus, hydrogen. C) Outer shells, kripton. D) Everywhere, nucleus. Show Answer Correct Answer: B) Nucleus, hydrogen. 7. What did Rutherford's gold foil experiment demonstrate? A) Electrons are embedded in a positive sphere. B) Atoms have a dense nucleus. C) Atoms are indivisible. D) Atoms are made of protons and neutrons only. Show Answer Correct Answer: B) Atoms have a dense nucleus. 8. Rutherford's 'alpha ($\alpha$) particles scattering experiment' resulted in the discovery of(a) electron(b) proton(c) nucleus in the atom(d) atomic mass A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 9. He proposed the particle theory of matter and called nature's most basic particle the "atomos" A) Aristotle. B) Democritus. C) Chadwick. D) Millikan. Show Answer Correct Answer: B) Democritus. 10. Based on the model above, students can conclude all the following valid claims EXCEPT A) Each neutron is electrically neutral. B) The nucleus carries a positive electrical charge. C) Electrons are continuously orbiting the nucleus. D) Electrons are negatively charged particles. Show Answer Correct Answer: C) Electrons are continuously orbiting the nucleus. 11. Mass minus Atomic Number Equals (M-A=?) A) Neutrons. B) Protons. C) Nucleus. D) Atom. Show Answer Correct Answer: A) Neutrons. 12. Which of the following quantum number have both positive and negative values A) Principle Quantum Number. B) Azimuthal Quantum Number. C) Magnetic Quantum Number. D) None of these. Show Answer Correct Answer: C) Magnetic Quantum Number. 13. Electron dot notation is ..... A) A representation of an element in which only valence electrons of an atom are shown. B) A representation of how compounds are formed. C) All the above. D) None of the above. Show Answer Correct Answer: A) A representation of an element in which only valence electrons of an atom are shown. 14. Which model of the atom is also known as the 'plum pudding model'? A) Bohr's model. B) Rutherford's model. C) Thomson's model. D) Dalton's model. Show Answer Correct Answer: C) Thomson's model. 15. An electron is approximately 0.05% of the mass of a proton. Protons and neutrons each have a mass of 1 amu. Which of the following best describes the relationship between mass and subatomic particles? A) The mass of an electron is equal to that of a neutron. B) Atomic mass is the total number of protons and electrons. C) A neutron has 0.05% more mass than an electron. D) The nucleus comprises over 99% of the atom's mass. Show Answer Correct Answer: D) The nucleus comprises over 99% of the atom's mass. 16. Which of the following statements is true regarding the line spectrum of hydrogen? A) The first line in each series has the longest wavelength. B) The ionisation energy of hydrogen can be calculated using the line with the lowest frequency in the ultra-violet region. C) The lines are all equally spaced. D) The lines converge when the wavelength increases. Show Answer Correct Answer: A) The first line in each series has the longest wavelength. 17. The number of orbitals present in the shell with principal quantum number n=3 is ..... A) 6. B) 9. C) 18. D) 36. Show Answer Correct Answer: C) 18. 18. What does the 1 in "1s" stand for? A) Energy level. B) S orbitals. C) P orbitals. D) The number of electrons. Show Answer Correct Answer: A) Energy level. 19. Which particle is responsible for creating ions? A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: C) Electrons. 20. Which of the following best describes the Bohr model atom? A) It shows that electrons are evenly scattered in the atom. B) Electrons are in the nucleus of an atom. C) Electrons are in orbits around the nucleus. D) It showed that electrons can be found anywhere in the atom. Show Answer Correct Answer: C) Electrons are in orbits around the nucleus. 21. How is an element identified? A) By its number of neutrons and protons. B) By its number of protons. C) By its number of electrons. D) By its number of neutrons. Show Answer Correct Answer: B) By its number of protons. 22. Which of the following would give you the number of neutrons in an atom? A) Atomic number. B) Mass number. C) Mass number-atomic number. D) Mass number + atomic number. Show Answer Correct Answer: C) Mass number-atomic number. 23. He discovered the neutron in the nucleus and completed the current atomic model. A) J.J. Thomson. B) Ernest Rutherford. C) Niels Bohr. D) James CHadwick. Show Answer Correct Answer: D) James CHadwick. 24. How many electrons can be present in n=4 shell? A) 32. B) 18. C) 12. D) 20. Show Answer Correct Answer: A) 32. 25. Atoms can gain or lose what? A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: C) Electrons. ← PreviousNext →Related 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 3Class 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 9Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books