This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A substance that conducts heat and electricity well and is malleable A) Metal. B) Non-Metal. C) Element. D) Malleable. Show Answer Correct Answer: A) Metal. 2. An element has a mass number of 31 and an atomic number of 15. How many total particles are inside the nucleus and outside the nucleus? A) 15, 15. B) 15, 31. C) 31, 15. D) 16, 15. Show Answer Correct Answer: C) 31, 15. 3. Which of the following is the most penetrating. A) Protons. B) Neutrons. C) Electrons. D) Alpha particles. Show Answer Correct Answer: B) Neutrons. 4. An element's atomic number tells the number of ..... A) Isotopes it forms. B) Electrons in its nucleus. C) Protons in its nucleus. D) None of the above. Show Answer Correct Answer: C) Protons in its nucleus. 5. Maximum number of electrons present in 'N' shell is A) 18. B) 32. C) 2. D) 8. Show Answer Correct Answer: B) 32. 6. Which of the following has a positive charge? A) Protron. B) Neutron. C) Onion. D) None of ththe above. Show Answer Correct Answer: A) Protron. 7. The valency of sulphate group is A) 2. B) 4. C) 8. D) None of the above. Show Answer Correct Answer: A) 2. 8. True or False:An element's atomic number tells how many protons are in the nucleus of an atom of that element. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Which of the following statement is correct about the atom of an element? A) An atom can have only protons and neutrons but no electrons. B) An atom can have only electrons and neutrons but no protons. C) An atom can have only electron and proton but no neutron. D) An atom must always have a proton, neutron and electron. Show Answer Correct Answer: C) An atom can have only electron and proton but no neutron. 10. The concept of orbit was used by A) J.J. Thomson. B) Rutherford. C) Bohr. D) Plank. Show Answer Correct Answer: C) Bohr. 11. What is the formulae to find the no of electrons in a discrete orbit? A) $2n$. B) $\left(2n\right)^2$. C) $2n^2$. D) $2n^4$. Show Answer Correct Answer: C) $2n^2$. 12. A uncharged particle in the nucleus of an atom is a ..... A) Electron. B) Neutron. C) Proton. D) None of the above. Show Answer Correct Answer: B) Neutron. 13. For n=7, the value of l is A) L=6, 5, 4, 3, 2, 1. B) L= 6. C) L=7. D) L= 5. Show Answer Correct Answer: A) L=6, 5, 4, 3, 2, 1. 14. The nucleus of an atom is charged. A) Positively (+). B) Negatively (-). C) Variable. D) Not. Show Answer Correct Answer: A) Positively (+). 15. An electron is exited from the energy level n=2 to the energy n=6. Which of the following statements is correct? A) The electron will achieve a higher stability. B) The electron cannot return to the energy level n=1. C) This transition produces a dark line in the violet region of visible light. D) Energy with a frequency corresponding to that of green light is absorbed. Show Answer Correct Answer: C) This transition produces a dark line in the violet region of visible light. 16. Isobars having ..... physical properties and ..... chemical properties. A) Same, different. B) Different, same. C) Same, same. D) Different different. Show Answer Correct Answer: A) Same, different. 17. Wave length of an electron moving with velocity 2.05 x 10$^{7 }$m/s A) 3.55 x 10$^{-11 }$m. B) 4.55 x 10$^{-11 }$m. C) 3.55 x 10$^{-10 }$m. D) 3.00 x 10$^{-11 }$m. Show Answer Correct Answer: A) 3.55 x 10$^{-11 }$m. 18. Which model of the atom describes electrons orbiting the nucleus in fixed paths? A) Quantum mechanical model. B) Bohr model. C) Rutherford model. D) Thomson model. Show Answer Correct Answer: B) Bohr model. 19. According to Ernest Rutherford, an atom is made of mostly ..... A) Empty space. B) Electrons. C) The nucleus. D) Protons. Show Answer Correct Answer: A) Empty space. 20. What is the shape of d orbitals? A) Clover-shaped. B) Only two orbitals per shell. C) Orbit radius = constant. D) Spiral. Show Answer Correct Answer: A) Clover-shaped. 21. Which sign is used to indicate the direction of the chemical reaction? A) Less than sign. B) Greater than sign. C) Arrow sign. D) None of the above. Show Answer Correct Answer: C) Arrow sign. 22. ELECTRONIC CONFIGURATION OF CALCIUM IS A) 2, 8, 8, 2. B) 2, 8, 9. C) 2, 8, 7, 3,. D) 2, 7, 7, 4,. Show Answer Correct Answer: A) 2, 8, 8, 2. 23. If an atom has 3 electrons, how many protons does it have? A) 1. B) 2. C) 4. D) 3. Show Answer Correct Answer: D) 3. 24. What subatomic particles would you find in the nucleus of an atom? A) Protons only. B) Protons and Neutrons. C) Neutrons and Electrons. D) Protons and Electrons. Show Answer Correct Answer: B) Protons and Neutrons. 25. Which shape is associated with the orbital designated by n=2, l=1 A) Spherical. B) Tetrahedral. C) Dumb-bell. D) Pyramidal. Show Answer Correct Answer: C) Dumb-bell. ← 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