This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A certain atom has 11 electrons and 8 neutrons. What is its atomic mass? A) 19. B) 15. C) 11. D) 18. Show Answer Correct Answer: A) 19. 2. Subatomic particle which has a positive charge is A) Neutron. B) Proton. C) Electron. D) None of the above. Show Answer Correct Answer: B) Proton. 3. Valency of magnesium? A) 2. B) 1. C) 12. D) 8. Show Answer Correct Answer: A) 2. 4. J.J. Thomson proposed that the nucleus of an atom contains only nucleons. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 5. What is it called when two or more of the same element have a different number of neutrons? A) Ion. B) Solution. C) Isotope. D) Substance. Show Answer Correct Answer: C) Isotope. 6. How many protons are in Uranium atom ( at. no.-92) A) 92. B) 110. C) 78. D) 56. Show Answer Correct Answer: A) 92. 7. What is the mass of a proton? A) 0 amu. B) 1 amu. C) 1.5 amu. D) 2 amu. Show Answer Correct Answer: B) 1 amu. 8. Which spectra is known as fingerprint spectra? A) Continuous emission spectra. B) Line emission spectra. C) Absorption spectra. D) None of the above. Show Answer Correct Answer: B) Line emission spectra. 9. The electronic configuration of an element 'Z' is 2, 8, 8. Is 'Z' a metal or a non-metal? A) Metal. B) Non-Metal. C) All the above. D) None of the above. Show Answer Correct Answer: B) Non-Metal. 10. What is the mass of an electron? A) 0 amu. B) 1 amu. C) 1.5 amu. D) 2 amu. Show Answer Correct Answer: A) 0 amu. 11. Electrons travel in a circular path around the nucleus A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. What is the energy of an X-ray with a frequency of 1.0 x 10$^{17}$ Hz? A) 6.63 x 10$^{-34}$ J. B) 6.63 x 10$^{-17}$ J. C) 1.51 x 10$^{16}$ J. D) 1.51 x 10$^{-16 }$J. Show Answer Correct Answer: B) 6.63 x 10$^{-17}$ J. 13. Ratio of radius of 4$^{th}$ Bohr's orbit to the 7$^{th}$ orbit is A) 4:7. B) 7:4. C) 16:49. D) 49:16. Show Answer Correct Answer: C) 16:49. 14. The area around the nucleus where elections are located A) Nucleus. B) Decepticon. C) Electron cloud. D) Borh model. Show Answer Correct Answer: C) Electron cloud. 15. Which rule states that orbitals are filled singly first? A) Hund's Rule. B) Aufbau Principle. C) Pauli Exclusion. D) Dalton's Law. Show Answer Correct Answer: A) Hund's Rule. 16. What is the mass of Potassium (K) atom that has 20 neutrons A) 18. B) 19. C) 20. D) 39. Show Answer Correct Answer: D) 39. 17. What is the smallest particle of an element that retains the properties of that element? A) Atom. B) Molecule. C) Proton. D) Electron. Show Answer Correct Answer: A) Atom. 18. Said elements are composed of atoms and different elements have different types of atoms. Elements can combine together to form new things. A) Dalton. B) Thomson. C) Rutherford. D) Bohr. Show Answer Correct Answer: A) Dalton. 19. The electrons of the same orbitals can be distinguished by A) Principal quantum number. B) Azimuthal quantum number. C) Spin quantum number. D) Magnetic quantum number. Show Answer Correct Answer: C) Spin quantum number. 20. Frequency of infrared radiation having wavelength 3X10$^{6}$ nm? A) 10$^{2 }$sec$^{-1}$. B) 10$^{8 }$sec$^{-1}$. C) 10$^{9 }$sec$^{-1}$. D) 10$^{11 }$sec$^{-1}$. Show Answer Correct Answer: D) 10$^{11 }$sec$^{-1}$. 21. What model did J.J. Thompson propose? A) Plum pudding model. B) Nuclear model. C) Orbital model. D) Solid sphere model. Show Answer Correct Answer: A) Plum pudding model. 22. AN ATOM HAS MASS NUMBER 37 AND ATOMIC NO 17.FIND THE NO OF PROTONS A) 21. B) 22. C) 17. D) 20. Show Answer Correct Answer: D) 20. 23. The number of protons in an atom is its A) Atomic mass. B) Atomic number. C) Element name. D) Element symbol. Show Answer Correct Answer: B) Atomic number. 24. Which of the following sub levels correspond to n=3 l=2l = 0$\rightarrow$n-1 A) 2p. B) 3s. C) 3p. D) 3d. E) 3f. Show Answer Correct Answer: D) 3d. 25. The correct electronic configuration of Pd is A) [Ar]3d$^{10}$4s$^{0}$. B) [Kr]4d$^{9}$5s$^{1}$. C) [Kr]4d$^{10}$5s$^{0}$. D) [Kr]4d$^{8}$5s$^{2}$. Show Answer Correct Answer: C) [Kr]4d$^{10}$5s$^{0}$. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 1Class 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 10Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books