This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 4 Structure Of The Atom – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 4 Structure Of The Atom Quiz 15 (18 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Protons are A) Negative. B) Positive. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Positive. 2. Mass no.of an atom is 27 and the no.of neutrons is 14. What is the no.of electrons in that atom? A) 10. B) 14. C) 16. D) 13. Show Answer Correct Answer: D) 13. 3. Whose numerous writing was the atomic theory A) Rutherford. B) Bohr. C) Thomson. D) Chadwick. Show Answer Correct Answer: B) Bohr. 4. A pure form of matter that cannot be broken into other elements. A) Atomic Number. B) Mass Number. C) Element. D) None of the above. Show Answer Correct Answer: C) Element. 5. What is the maximum number of electrons that can occupy the second energy level of an atom? A) 2. B) 8. C) 18. D) 32. Show Answer Correct Answer: B) 8. 6. Which Is Carbon A) C. B) Ca. C) Ch. D) Jk. Show Answer Correct Answer: A) C. 7. A neutral, subatomic particle in an atom's nucleus that has a mass nearly equal to that of a proton A) Neutron. B) Proton. C) Electron. D) Nucleus. Show Answer Correct Answer: A) Neutron. 8. ..... have a negligible mass. A) Protons. B) Neutrons. C) Electrons. D) +1. E) -1. Show Answer Correct Answer: C) Electrons. 9. While making his model of an atom, what structure did Rutherford discover (containing protons and neutrons)? A) The Nucleus. B) The Electron Cloud. C) The quarks. D) The atomic mass. Show Answer Correct Answer: A) The Nucleus. 10. A particle that moves around the nucleus is called an A) Proton. B) Electron. C) Neutron. D) None of the above. Show Answer Correct Answer: B) Electron. 11. Which of the following elements contains the least amount of electrons? A) Aluminum. B) Fluorine. C) Calcium. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 12. The smallest particle of an element that still represents that element. A) Nucleus. B) Electron. C) Proton. D) Atom. Show Answer Correct Answer: D) Atom. 13. Which is the correct sequence of the scientists who made major changes in the model of the atom?1-JJ Thomson2-James Chadwick3-John Dalton4-Niels Bohr5-Ernest Rutherford A) 2, 1, 4, 3, 5. B) 5, 3, 2, 1, 4. C) 3, 1, 5, 4, 2. D) 4, 3, 2, 1, 5. Show Answer Correct Answer: C) 3, 1, 5, 4, 2. 14. If an atom has 10 electrons, how many protons does it have? A) 0. B) 1. C) 10. D) 5. Show Answer Correct Answer: C) 10. 15. The smallest particle of an element that retains all the properties of that element; is electrically neutral, spherically shaped and composed of electrons, protons, and neutrons A) Atom. B) Electron. C) Nucleus. D) Neutron. Show Answer Correct Answer: A) Atom. 16. Most of the atom is empty space. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Which subatomic particle determines the identity of an element? A) Electron. B) Neutron. C) Proton. D) Photon. Show Answer Correct Answer: C) Proton. 18. Electrons have a ..... charge A) Positive. B) Negative. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Negative. ← PreviousRelated QuizzesClass 9 Science Chapter 4 Structure Of The Atom Quiz 1Class 9 Science Chapter 4 Structure Of The Atom Quiz 2Class 9 Science Chapter 4 Structure Of The Atom Quiz 3Class 9 Science Chapter 4 Structure Of The Atom Quiz 4Class 9 Science Chapter 4 Structure Of The Atom Quiz 5Class 9 Science Chapter 4 Structure Of The Atom Quiz 6Class 9 Science Chapter 4 Structure Of The Atom Quiz 7Class 9 Science Chapter 4 Structure Of The Atom Quiz 8Class 9 Science Chapter 4 Structure Of The Atom Quiz 9Class 9 Science Chapter 4 Structure Of The Atom Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books