This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 48 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the main difference between isotopes of the same element? A) Number of protons. B) Number of electrons. C) Number of neutrons. D) Atomic number. Show Answer Correct Answer: C) Number of neutrons. 2. A sub-shell with n = 6, l = 2 can accommodate a maximum of A) 12 electrons. B) 36 electrons. C) 10 electrons. D) 72 electrons. Show Answer Correct Answer: C) 10 electrons. 3. Rutherford's atomic model suggests the existence of A) Atom. B) Nucleus. C) Mesons. D) $\alpha$-particle. Show Answer Correct Answer: B) Nucleus. 4. A sub-atomic particle with a postive charge A) Proton. B) Neutron. C) Electron. D) Nucleus. Show Answer Correct Answer: A) Proton. 5. A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample whenpressure is applied to it.Based on this information, the element could NOT be a member of which group on theperiodic table? A) Group 2. B) Group 8. C) Group 12. D) Group 18. Show Answer Correct Answer: D) Group 18. 6. The radius of the second Bohr orbit for hydrogen atom is A) 1.65 Angstrom. B) 4.76 Angstrom. C) 0.529 Angstrom. D) 2.12 Angstrom. Show Answer Correct Answer: D) 2.12 Angstrom. 7. The temperature at which a substance changes from a solid to a liquid A) Melting Point. B) Boiling Point. C) 100$^{0}$ C. D) 212$^{0 }$F. Show Answer Correct Answer: A) Melting Point. 8. Where is the proton located? A) Nucleus. B) Energy shells. C) Electron cloud. D) The outside of an atom. Show Answer Correct Answer: A) Nucleus. 9. What was the source of alpha particles in the Rutherford scattering experiment? A) Hydrogen nucleus. B) Argon nucleus. C) Helium nucleus. D) None of these. Show Answer Correct Answer: C) Helium nucleus. 10. The maximum number of electrons in s, p and d-subshells are A) 2 in each. B) 2, 4 and 6. C) 2, 6 and 10. D) 2, 6 and 12. Show Answer Correct Answer: C) 2, 6 and 10. 11. What is the energy of light whose wavelength is 4.06 x 10$^{-11}$ m? A) 2.69 x 10$^{-44}$ J. B) 1.63 x 10$^{-23}$$^{}$ J. C) 4.90 x 10$^{-15}$ J. D) 8.97 x 10$^{-53 J}$. Show Answer Correct Answer: C) 4.90 x 10$^{-15}$ J. 12. Which set is correct A) N =1 l=1 m=0. B) N=5 l=2 m=0. C) N=2 l=0 m=1. D) N=3 l=-2 m=0. Show Answer Correct Answer: B) N=5 l=2 m=0. 13. How do you identify an element? A) By matching the number of protons to the atomic number. B) By matching the number of neutrons to the atomic number. C) By matching the number of electrons to the atomic number. D) None of the above. Show Answer Correct Answer: A) By matching the number of protons to the atomic number. 14. For which of the following sets of quantum numbers an electron will have the highest energy? A) 3, 2, 1, 1/2. B) 4, 2, -1, 1/2. C) 5, 1, 0, -1/2. D) 5, 0, 0, 1/2. Show Answer Correct Answer: C) 5, 1, 0, -1/2. 15. The symbol for CHLORINE is ..... A) Ch. B) Cl. C) C. D) Cn. Show Answer Correct Answer: B) Cl. 16. Assertion:There are 5 electrons in the 3d sub-shell of Cr.Reason:Half-filled sub-shells are more stable. A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is not the correct explanation of A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: A) Both A and R are true and R is the correct explanation of A. 17. The charge of an atom is determined by the- A) Shape of the electron cloud. B) Atomic mass of the element. C) Radius of the outermost electron. D) Number of protons and electrons. Show Answer Correct Answer: D) Number of protons and electrons. 18. The dense center region of an atom A) Electron cloud. B) Core. C) Nucleus. D) Centrino. Show Answer Correct Answer: C) Nucleus. 19. Nitrogen has variable valency A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 20. Which atomic model proposed that electrons move in fixed orbits around the nucleus? A) Rutherford's model. B) Bohr's model. C) Dalton's model. D) Thomson's model. Show Answer Correct Answer: B) Bohr's model. 21. The maximum number of electrons that can be accommodated in d$_{xy}$ orbital is A) 10. B) 4. C) 1. D) 2. Show Answer Correct Answer: D) 2. 22. How many electrons are in the element oxygen? A) 7. B) 10. C) 8. D) 9. Show Answer Correct Answer: C) 8. 23. Which of these are fundamental particles of atom?a; positronsb; mesons c ; protons A) A, b and c. B) B and c. C) A and b. D) A and c. Show Answer Correct Answer: A) A, b and c. 24. Which d-orbital does not have four lobes? A) D $_{x2-y2}$. B) D $_{xy}$. C) D $_{yz}$. D) D $_{z}$$^{2}$. Show Answer Correct Answer: D) D $_{z}$$^{2}$. 25. Which quantum number indicates orientation? A) Ml. B) L. C) N. D) Ms. Show Answer Correct Answer: A) Ml. ← 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