This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What mass does a neutron have? A) 1 amu. B) 0 amu. C) 11 amu. D) 2 amu. Show Answer Correct Answer: A) 1 amu. 2. A subatomic particle that has a positive charge is known as a(n) A) Electron. B) Neutron. C) Proton. D) Isotope. Show Answer Correct Answer: C) Proton. 3. All the substances are made up of tiny particles called A) Protons. B) Electrons. C) Atoms. D) Nucleus. Show Answer Correct Answer: C) Atoms. 4. ISOTOPES OF ELEMENTS HAVE SAME A) PHYSICAL PROPERTIES. B) CHEMICAL PROPERTIES. C) MASS NO. D) NO OF NEUTRONS. Show Answer Correct Answer: B) CHEMICAL PROPERTIES. 5. The second energy level can hold up to, how many electrons? A) 2. B) 8. C) 10. D) 12. Show Answer Correct Answer: B) 8. 6. What is the MOST important subatomic particle when it comes to identifying the name of an atom? A) Electron. B) Proton. C) Nucleus. D) Neutron. Show Answer Correct Answer: B) Proton. 7. Of the atom's mass is located in the A) Electrons. B) Nucleus. C) Protons. D) Neutrons. Show Answer Correct Answer: B) Nucleus. 8. Balmer series of the hydrogen spectrum lies in the ..... region A) UV. B) Visible. C) Far Infrared. D) Near Infrared. Show Answer Correct Answer: B) Visible. 9. How many number of shells are in nitrogen? A) 2. B) 4. C) 3. D) 1. Show Answer Correct Answer: A) 2. 10. An element with a mass number of 11 and an atomic number of 5 has how many neutrons? A) 11. B) 5. C) 6. D) 16. Show Answer Correct Answer: C) 6. 11. What numbers on the Periodic Table tell you how many valence electrons an element has? A) The numbers attached to the A's and B's at the top of each group. B) The numbers attached to the periods on the left side of the Periodic Table. C) The numbers located inside each box on the Periodic Table. D) None of the above. Show Answer Correct Answer: A) The numbers attached to the A's and B's at the top of each group. 12. 1s$^{2}$, 2s$^{2}$, 2p$^{3}$ represents A) Na. B) N. C) O. D) F. Show Answer Correct Answer: B) N. 13. The revolution of the electron in a circular orbit is not expected to be stable, this is because A) There is no acceleration in a uniform circular motion. B) During acceleration, charged particles would radiate energy. C) Charged particles can never undergo circular motion. D) None. Show Answer Correct Answer: B) During acceleration, charged particles would radiate energy. 14. Which element in the compound Li$_{3}$HMg$_{4 }$ would have the most protons in its nucleus? A) Li. B) H. C) Mg. D) None of the above. Show Answer Correct Answer: C) Mg. 15. The lightest particle in the atom is A) Proton. B) Neutron. C) Electron. D) None of the above. Show Answer Correct Answer: C) Electron. 16. What do carbon-12 and carbon-14 have in common? A) They have same number of protons. B) They have the same number of neutrons. C) They have the same atomic mass. D) They have the same atomic weight. Show Answer Correct Answer: A) They have same number of protons. 17. What is the total number of protons, neutrons, and electrons in a Cadmium atom if that has a mass number of 112 A) 112. B) 48. C) 64. D) 160. Show Answer Correct Answer: D) 160. 18. How many protons, neutrons, and electrons are present in an atom of Barium (Ba) with a mass number of 138? A) 56 protons, 82 neutrons, and 56 electrons. B) 56 protons, 138 neutrons, 82 electrons. C) 56 protons, 81 neutrons, and 56 electrons. D) 56 protons, 56 neutrons, and 56 electrons. Show Answer Correct Answer: A) 56 protons, 82 neutrons, and 56 electrons. 19. He found the positively charged protons in the nucleus and said that electrons moved around the nucleus A) J.J. Thomson. B) Ernest Rutherford. C) Niels Bohr. D) James Chadwick. Show Answer Correct Answer: B) Ernest Rutherford. 20. Nucleus was discovered by ..... in ..... A) Ernest Rutherford, 1920. B) James Chadwick, 1920. C) James Chadwick, 1911. D) Ernest Rutherford, 1911. Show Answer Correct Answer: D) Ernest Rutherford, 1911. 21. This particle determines the element's identity. A) Electron. B) Proton. C) Neutron. D) Valence shell. Show Answer Correct Answer: B) Proton. 22. What sub-atomic particle is this?-Outside the Nucleus-Negatively Charged A) Proton. B) Electron. C) Neutron. D) None of the above. Show Answer Correct Answer: B) Electron. 23. Transition of electron from an excited state to a ground state of n = 5 formed a photon. Which of the following series belongs to this respective transition? A) Balmer. B) Pfund. C) Brackett. D) Lyman. E) Paschen. Show Answer Correct Answer: B) Pfund. 24. Any process where light photons are generated is known as luminescence. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. 13-Electronic configuration of Al$^{+3}$ is A) 2, 8, 3. B) 2, 8, 8. C) 2, 8. D) 2, 8, 8, 3. Show Answer Correct Answer: C) 2, 8. ← 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