This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 29 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does the intensity affect the photoelectric current? A) As intensity increases, the photoelectric effect increases. B) As the intensity increases, the photoelectric effect decreases. C) As the intensity decreases, the photoelectric effect becomes twice. D) No effect. Show Answer Correct Answer: A) As intensity increases, the photoelectric effect increases. 2. An element's identity is determined by the number of A) Electrons. B) Protons. C) Neutrons. D) Valence. Show Answer Correct Answer: B) Protons. 3. Atoms that have the same number of protons but different numbers of neutrons is known as A) Isotope. B) Isotone. C) Isobar. D) Isomer. Show Answer Correct Answer: A) Isotope. 4. Electron moves around nucleus of atom which contain proton. true or false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Which region does the Lyman series belong to? A) Infrared. B) Visible. C) Ultraviolet. D) X-rays. Show Answer Correct Answer: C) Ultraviolet. 6. Identify an element with three shells and zero valency. A) Argon. B) Neon. C) Helium. D) Kyrpton. Show Answer Correct Answer: A) Argon. 7. What is the maximum number of electrons that can occupy the first shell of an atom? A) 2. B) 8. C) 18. D) 32. Show Answer Correct Answer: A) 2. 8. How many electrons are present in M-shell of an element with atomic number 20? A) 5. B) 8. C) 12. D) 18. Show Answer Correct Answer: B) 8. 9. Which of the following is a property of isotope? A) They have the same number of electrons. B) They have the same number of protons. C) They have different chemical properties. D) They have the same mass number. Show Answer Correct Answer: A) They have the same number of electrons. 10. How was the electron discovered? A) Gold Foil Experiment. B) Double-Slit experiment. C) Cathode Ray Tube. D) Newton's prism experiment. Show Answer Correct Answer: C) Cathode Ray Tube. 11. The line with the shortest wavelength is produced in the hydrogen spectrum when electron moves A) From n=2 to n=1. B) From n=4 to n=1. C) From n=3 to n=1. D) From n=4 to n=3. Show Answer Correct Answer: B) From n=4 to n=1. 12. Subsidiary Quantum Number is given by which formula A) N$^{2}$. B) 0 to (n-1). C) 2n$^{2}$. D) +1/2. Show Answer Correct Answer: B) 0 to (n-1). 13. 1) For hydrogen atom, the minimum excitation energy (of n=2) is ..... A) 3.4 e V. B) 10.2 e V. C) 13.6 e V. D) -10.2 e V. Show Answer Correct Answer: B) 10.2 e V. 14. Which of the following has frequencies higher than ultraviolet rays? A) Visible light. B) Infrared rays. C) X-rays. D) None of the above. Show Answer Correct Answer: C) X-rays. 15. Which of the following isotope is used in the treatment of blood cancer?(a) P-32(b) I-131(c) Co-60(d) C-14 A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 16. In a model of an atom, what particle is responsible for the identity of an atom? A) Protons. B) Valence electrons. C) Neutrons. D) Nucleus. Show Answer Correct Answer: A) Protons. 17. Elements with valency 1 are A) Always metals. B) Always metalloids. C) Either metals or non-metals. D) Always non-metals. Show Answer Correct Answer: C) Either metals or non-metals. 18. Al is the symbol for ..... A) Silver. B) Gold. C) Aluminum. D) Arsenic. Show Answer Correct Answer: C) Aluminum. 19. G-subshell start from A) 2nd energy level. B) 3rd energy level. C) 4th energy level. D) 5th energy level. Show Answer Correct Answer: D) 5th energy level. 20. Electron was discovered by A) J.J thomson. B) E. Goldstein. C) Rutherford. D) None of the above. Show Answer Correct Answer: A) J.J thomson. 21. Calculate the energy of a gamma ray photon whose frequency is 5.02 x 10$^{20}$ Hz? A) 7.57 x 10$^{53 }$$^{J}$. B) 3.33 x 10$^{-13}$J. C) 1.32 x 10$^{-54}$J. D) 6.63 x 10$^{-34}$$^{}$ J. Show Answer Correct Answer: B) 3.33 x 10$^{-13}$J. 22. Which quantum number is not required to describe an orbital? A) Ms. B) N. C) L. D) Ml. Show Answer Correct Answer: D) Ml. 23. H$_{2 }$+ Cl$_{2 }$gives out A) Two atoms of Chlorine. B) Two molecules of Hydrochloric acid. C) Two molecules of water. D) None of the above. Show Answer Correct Answer: B) Two molecules of Hydrochloric acid. 24. This neutrally charged subatomic particle is found in the nucleus. A) Proton. B) Neutron. C) Electron. D) None of the above. Show Answer Correct Answer: B) Neutron. 25. What is the smallest unit of an element that retains the properties of that element? A) Molecule. B) Atom. C) Electron. D) Proton. Show Answer Correct Answer: B) Atom. ← 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