This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Science Chapter 4 Structure Of The Atom – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 4 Structure Of The Atom Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Who was known as the 'Father of nuclear physics' A) Bohr. B) Rutherford. C) Dalton. D) Thomson. Show Answer Correct Answer: B) Rutherford. 2. Who discovered that the atom has a nucleus? A) Marie Curie. B) Dmitri Mendeleev. C) Niels Bohr. D) Ernest Rutherford. Show Answer Correct Answer: D) Ernest Rutherford. 3. Which of the following substances is made up of ions? Which of the following materials is made up of ions? A) Zinc / Zink. B) Sodium chloride / Natrium klorida. C) Naphthalene / Naftalena. D) Oxygen gas / Gas oksigen. Show Answer Correct Answer: B) Sodium chloride / Natrium klorida. 4. Two isotopes of an element will have different numbers of WHAT subatomic particle? A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: B) Neutrons. 5. Charge on Proton is A) No charge. B) Positive. C) Negative. D) Can be positive or negative. Show Answer Correct Answer: B) Positive. 6. An atom of element X has a nucleon number of 14. The electron arrangement of this atom is 2.4.Which of the following statements is true about an atom of element X that has a nucleon number of 13? A) The atoms has 7 protons. B) The electron arrangement of the atom is 2.4. C) The atom has 8 neutrons. D) The atoms has 3 valence electrons. Show Answer Correct Answer: B) The electron arrangement of the atom is 2.4. 7. If a neutral atom has 8 protons, how many electrons does it have? A) 7. B) 8. C) 9. D) 10. Show Answer Correct Answer: B) 8. 8. Which of these are parts of the atom? A) Protons, ProAthletes, Neutrons. B) Neutrons, Protons, Electrons. C) Mitochondria, Electrons, Protons. D) Oxygen. Show Answer Correct Answer: B) Neutrons, Protons, Electrons. 9. What does amu stand for? A) Atom matter unit. B) Atomic mass unit. C) All mighty unicorn. D) None of the above. Show Answer Correct Answer: B) Atomic mass unit. 10. Isobars have different number of? A) Protons. B) Electrons. C) Neutrons. D) Protons and Neutrons. Show Answer Correct Answer: D) Protons and Neutrons. 11. Which two particles make up the nucleus of an atom? A) Protons and Electrons. B) Protons and Neutrons. C) Molecules and Compounds. D) Neutrons and Electrons. Show Answer Correct Answer: B) Protons and Neutrons. 12. A chemical symbol represents the ..... of an element. A) Name. B) Structure. C) Reaction. D) Type. Show Answer Correct Answer: A) Name. 13. Which particle has almost no mass? A) Protons. B) Neutrons. C) Electrons. D) None of the above. Show Answer Correct Answer: C) Electrons. 14. 7 smallest part of an element that has all of the properties of that element. A) Nucleus. B) Gem. C) Mineral. D) Atom. Show Answer Correct Answer: D) Atom. 15. What is Carbons Atomic Number A) 8. B) 89. C) 6. D) 50. Show Answer Correct Answer: C) 6. 16. What is the maximum number of electrons that the second energy level of an atom can fit? A) Eight. B) Two. C) Four. D) Six. Show Answer Correct Answer: A) Eight. 17. How many electrons can the first energy level hold? A) 2. B) 8. C) 16. D) 32. Show Answer Correct Answer: A) 2. 18. How many electrons can the first energy level/shell hold? A) 1. B) 2. C) 4. D) 8. Show Answer Correct Answer: B) 2. 19. How would you calculate the number of neutrons in an atom A) Mass number-Total weight. B) Atomic number-Mass number. C) Mass number-Atomic Number. D) Positive charge-Negative charge. Show Answer Correct Answer: C) Mass number-Atomic Number. 20. The subatomic particles that make up neutrons and protons are called ..... A) Groupons. B) Mendelev. C) Nucleus. D) Quarks. Show Answer Correct Answer: D) Quarks. 21. If a carbon atom has six protons and has a mass of 13 amu, how many neutrons are in that carbon atom? A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: C) 7. 22. Neils Bohr's atomic theory is similar to the concept of the A) Solar system. B) Circles with dots. C) Spinning wheel. D) None of the above. Show Answer Correct Answer: A) Solar system. 23. Which of the following represents the electron configuration of a metallic element? A) 2.5. B) 2.8. C) 2.8.3. D) 2.8.7. Show Answer Correct Answer: C) 2.8.3. 24. When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element ..... A) Remains the same. B) Decreases by one. C) Increases by one. D) Increases by two. Show Answer Correct Answer: A) Remains the same. 25. Where are protons and neutrons located in an atom? A) In the atomic orbitals. B) In the electron energy levels. C) In the electron cloud. D) In the center or nucleus. Show Answer Correct Answer: D) In the center or nucleus. ← PreviousNext →Related 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books