This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Most of the mass of an atom is found in the ..... A) Nucleus. B) Proton. C) Electron cloud. D) Isotope. Show Answer Correct Answer: A) Nucleus. 2. For the hydrogen atom, the electron transition with the longest wavelenght is A) N$_{3 }$to n$_{1}$. B) N$_{4 }$to n$_{2}$. C) N$_{5 }$to n$_{1}$. D) N$_{7 }$to n$_{5}$. Show Answer Correct Answer: D) N$_{7 }$to n$_{5}$. 3. Nucleus of heavy elements do not have- A) Protons. B) Neutrons. C) Electrons. D) Nucleons. Show Answer Correct Answer: C) Electrons. 4. The spectral line in hydrogen spectrum obtained when the electron jumps from n=5 to n=2 energy level belongs to: A) Lyman series. B) Balmer series. C) Paschen series. D) Pfund series. Show Answer Correct Answer: B) Balmer series. 5. What can be found from the total of the subatomic particles in the nucleus? A) Atomic number. B) Atomic mass. C) Number of electrons. D) Charge of the nucleus. Show Answer Correct Answer: B) Atomic mass. 6. Magnetic Quantum Numbers is given by A) -l to +l. B) (2l + 1). C) Both of these. D) None of these. Show Answer Correct Answer: C) Both of these. 7. Which subatomic particle was discovered by Thomson? A) Electrons. B) Protons. C) Neutrons. D) Quarks. Show Answer Correct Answer: A) Electrons. 8. Who was the first one to propose a model for the structure of an atom? A) J.J.Thomson. B) Dalton. C) Rutherford. D) None of the above. Show Answer Correct Answer: A) J.J.Thomson. 9. An element has 16 protons. The number of electrons present in the valence shell of this element are ..... A) 6. B) 2. C) 8. D) 4. Show Answer Correct Answer: A) 6. 10. Which of the following statements about the electron is incorrect? A) It is a negatively charged particles. B) The mass of an electron is equal to the mass of a neutron. C) It is a basic constituent of all-atom. D) It is a constituent of cathode rays. Show Answer Correct Answer: B) The mass of an electron is equal to the mass of a neutron. 11. What was JJ Thompson's model of an atom called? A) The plum pudding model. B) The plum cake model. C) The dry fruit pudding model. D) None of the above. Show Answer Correct Answer: A) The plum pudding model. 12. Atomic number is denoted by? A) A. B) N. C) Z. D) K. Show Answer Correct Answer: C) Z. 13. Which of the following statements about Rutherford's model of atom are correct?(i) considered the nucleus as positively charged(ii) established that the $\alpha$-particles are four times as heavy as a hydrogen atom(iii) can be compared to solar system(iv) was in agreement with Thomson's model A) (i) and (iii). B) (ii) and (iii). C) (i) and (iv). D) Only (i). Show Answer Correct Answer: A) (i) and (iii). 14. Protons and neutrons are found in the ..... A) Energy levels. B) Nucleus. C) Space. D) Bohr Model. Show Answer Correct Answer: B) Nucleus. 15. Which of the following has the largest de-Broglie wavelength, provided all have equal velocity? A) CO2 molecule. B) Electron. C) NH4 molecule. D) Proton. Show Answer Correct Answer: B) Electron. 16. The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is A) 6, 0, 0. +1/2. B) 5, 0, -1, +1/2. C) 5, 1, 0. +1/2. D) 5, 0, 0. +1/2. Show Answer Correct Answer: D) 5, 0, 0. +1/2. 17. Science Day in Switzerland is dedicated to an Indian. Who is this great personality? A) C. V. Raman. B) Vikram Sarabhai. C) Homi Bhabha. D) A. P. J. Abdul Kalam. Show Answer Correct Answer: D) A. P. J. Abdul Kalam. 18. If the nitrogen atom had electronic configuration 1s$^{7}$, it would have energy lower than that of the normal ground state configuration 1s$^{2}$ 2s$^{2}$ 2p$^{3}$ because the electrons would be closer to the nucleus. Yet, 1s$^{7}$ is not observed because it violates. A) Heisenberg uncertainty principle. B) Hund's rule. C) Pauli's exclusion principle. D) Bohr postulates of stationary orbits. Show Answer Correct Answer: C) Pauli's exclusion principle. 19. Which of the following are found in the orbitals? A) Proton. B) Electron. C) Neutron. D) All of the above. Show Answer Correct Answer: B) Electron. 20. The mass of an electron is A) 9.1 x 10$^{-31}$ kg. B) 9.1 x 10$^{-28}$ g. C) Both. D) None. Show Answer Correct Answer: C) Both. 21. The chemical symbol for Argon is A) Ar. B) A. C) Ag. D) Au. Show Answer Correct Answer: A) Ar. 22. Which of the following orbitals in a multielectron atom has highest enegy A) 4s. B) 3d. C) 3p. D) 3s. Show Answer Correct Answer: A) 4s. 23. Found in the nucleus of an atom, this subatomic particle has a neutral (or no ) charge A) Neutron. B) Proton. C) Electron. D) Whattheheckatron. Show Answer Correct Answer: A) Neutron. 24. What is the (n + l) value for 4s orbital? A) 4. B) 5. C) 6. D) 7. Show Answer Correct Answer: A) 4. 25. To find the number of neutrons, we ..... A) Add protons and neutrons. B) Subtract protons and electrons. C) Subtract the mass number and atomic number. D) Subtract atomic number and electrons. Show Answer Correct Answer: C) Subtract the mass number and atomic number. ← 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