This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Bohr's model of atom is not in agreement with A) Line spectra of hydrogen atom. B) Pauli's principle. C) Planck's theory. D) Heisenberg's principle. Show Answer Correct Answer: D) Heisenberg's principle. 2. What are the 3 subatomic particles of an atom? A) Carbon atom, proton, electron. B) Quarks, neutrons, protons. C) Nucleus, protons, electrons. D) Protons, neutrons, electrons. Show Answer Correct Answer: D) Protons, neutrons, electrons. 3. A joining together A) Fusion. B) Fission. C) Frustration. D) Furious. Show Answer Correct Answer: A) Fusion. 4. If energy is added to an electron, the electron move to the new orbit known as A) Lower energy level. B) Excited state. C) Ground state. D) None of the above. Show Answer Correct Answer: B) Excited state. 5. J . J Thomson's atomic model didn't have any drawbacks A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. Hydrogen has 1 proton. It's atomic number is: A) 0. B) 1. C) 2. D) Cannot be determined. Show Answer Correct Answer: B) 1. 7. What property of an element determines its chemical behaviour? A) Size of an element. B) Valency of an element. C) Molar mass of the element. D) None of these. Show Answer Correct Answer: B) Valency of an element. 8. What is the number of radial nodes in 3s orbital? A) 2. B) 1. C) 3. D) 0. Show Answer Correct Answer: A) 2. 9. How can we find the atomic no of an element? A) No. of neutrons. B) No. of protons. C) No. of electrons. D) No. of shells. Show Answer Correct Answer: B) No. of protons. 10. How many paired electrons are in an atom of Chlorine? A) 8. B) 7. C) 16. D) 2. Show Answer Correct Answer: C) 16. 11. N=5 l=2 A) 3d. B) 2s. C) 5d. D) 7f. Show Answer Correct Answer: C) 5d. 12. What are neutrons characterized by? A) Negative charge. B) Double charge. C) No charge. D) Positive charge. Show Answer Correct Answer: C) No charge. 13. The electrons acquiring same orbital are distinguished by A) Azimuthal quantum number. B) Spin quantum number. C) Principal quantum number. D) Magnetic quantum number. Show Answer Correct Answer: B) Spin quantum number. 14. What are the three subatomic particles that make up an atom? A) Protons, electrons, and quarks. B) Protons, neutrons, and electrons. C) Electrons, photons, and neutrinos. D) Protons, neutrons, and positrons. Show Answer Correct Answer: B) Protons, neutrons, and electrons. 15. The p sub shell has A) One orbital. B) Two orbitals. C) Three orbirals. D) Four orbitals. Show Answer Correct Answer: C) Three orbirals. 16. In which of the following pairs, the ions are iso-electronic?(i) Na+, Mg$^{2+}$(ii) Al$^{3+}$, O-(iii) Na+, O$^{2-}$(iv) N$^{3-}$, Cl- A) (i), (ii). B) (i), (iii). C) (ii), (iv). D) (ii), (iv). Show Answer Correct Answer: B) (i), (iii). 17. Which subatomic particle is the heaviest? A) Electron. B) Proton. C) Neutron. D) Positron. Show Answer Correct Answer: C) Neutron. 18. An alpha particle contains A) 4 positive charge and 2 mass unit. B) 2 positive charge and 4 mass unit. C) 2 positive charge and 2 mass unit. D) 4 positive charge and 4 mass unit. Show Answer Correct Answer: B) 2 positive charge and 4 mass unit. 19. Emission of light from an atom occurs when an electron A) Drops from a higher to a lower energy level. B) Jumps from a lower to a higher energy level. C) Moves within its atomic orbital. D) Falls into the nucleus. Show Answer Correct Answer: A) Drops from a higher to a lower energy level. 20. Protons was discovered in the year 1886 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Who discovered anode rays A) J J Thomson. B) E Goldstein. C) Rutherford. D) Bohr. Show Answer Correct Answer: B) E Goldstein. 22. The highest Cricket ground in the world is located in India. Where is it located? A) Chail, Himachal Pradesh. B) Dharamshala, Himachal Pradesh. C) Nainital, Uttarakhand. D) Dehradun, Uttarakhand. Show Answer Correct Answer: A) Chail, Himachal Pradesh. 23. Orbital angular momentum depends on ..... A) L. B) L and m. C) M and s. D) N and l. Show Answer Correct Answer: A) L. 24. Which of the following elements does not exhibit electrovalency? A) Calcium. B) Chromium. C) Carbon. D) Cadmium. Show Answer Correct Answer: C) Carbon. 25. Carbon valency is? A) +4. B) -4. C) +4 and-4. D) 8. Show Answer Correct Answer: C) +4 and-4. ← 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 10Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books