This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For an element, Z = 9. The valency of this element will be: A) 4. B) 2. C) 1. D) 3. Show Answer Correct Answer: C) 1. 2. What is the common name for the group of elements known as Group 17 in the periodic table? A) Alkali metals. B) Noble gases. C) Halogens. D) Transition metals. Show Answer Correct Answer: C) Halogens. 3. It is the quantum number that describes the "shape" of the orbital. A) Principal Quantum Number. B) Angular Momentum Quantum Number. C) Magnetic Quantum Number. D) Spin Quantum Number. Show Answer Correct Answer: B) Angular Momentum Quantum Number. 4. Place the following atomic models in order, from earliest to latest:A) Rutherford B) Thomson C) Dalton A) B, C, A. B) C, A, B. C) A, C, B. D) C, B, A. Show Answer Correct Answer: D) C, B, A. 5. What did Thomson discover? A) Electron. B) Proton. C) Neutron. D) Electron cloud. Show Answer Correct Answer: A) Electron. 6. What is the threshold frequency? A) Minimum frequency for photoemission. B) Energy per photon. C) Minimum intensity for emission. D) Photoelectric current. Show Answer Correct Answer: A) Minimum frequency for photoemission. 7. The wavelength of the electron emitted, when in a hydrogen atom, electron falls from infinity to stationary state 1, would be [Rydberg's constant = 1.097 x 10$^{7}$ m$^{-1}$ ] A) 91 nm. B) 192 nm. C) 406 nm. D) 9.1 x 10$^{-8}$ nm. Show Answer Correct Answer: A) 91 nm. 8. Which of the following is a substance that can not be broken down into a simpler substance? A) Isotope. B) Element. C) Compound. D) Atomic Number. Show Answer Correct Answer: B) Element. 9. How many maximum number of electrons can accomodate 3rd shell/ M shell? A) 2. B) 8. C) 18. D) 32. Show Answer Correct Answer: C) 18. 10. Which is NOT unit of charge A) Esu. B) Ampere*second. C) Coulomb. D) Angstrom. Show Answer Correct Answer: D) Angstrom. 11. Most penetrating radiation of a radioactive element is A) $\beta$. B) $\alpha$. C) $\gamma$. D) None of these. Show Answer Correct Answer: C) $\gamma$. 12. What is the electron configuration for nitrogen? A) 1s$^{2}$ 2$^{}$s$^{2}$ 2p$^{3}$. B) 1s$^{2}$ 2$^{}$s$^{3}$ 2p$^{2}$. C) 1s$^{2}$ 2$^{}$s$^{3}$ 2p$^{1}$. D) 1s$^{2}$ 2$^{}$s$^{2}$ 2p$^{2 }$3s$^{1}$. Show Answer Correct Answer: A) 1s$^{2}$ 2$^{}$s$^{2}$ 2p$^{3}$. 13. What types of particles are found in the cloud surrounding the atom's nucleus? A) Positively charged particles and negatively charged particles. B) Negatively charged particles only. C) Neutral particles and positively charged particles. D) Positively charged particles only. Show Answer Correct Answer: B) Negatively charged particles only. 14. Which is true about 1st orbit of H and He+ A) H>He+. B) H=He+. C) H D) None. Show Answer Correct Answer: A) H>He+. 15. An ion with mass number 37 possesses one unit of negative charge. if the ion contains 11.1 % more neutrons than the electrons, find the symbol of the ion. A) $_{18}$Ar$^{37}$. B) $_{18}$Ar$^{37 (-1)}$. C) $_{17}$Cl$^{37 (-1)}$. D) $_{17}$Cl$^{37 }$. Show Answer Correct Answer: C) $_{17}$Cl$^{37 (-1)}$. 16. An electron has a ..... charge. A) Negative. B) Positive. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Negative. 17. The wavelength of a electron and a neutron will become equal when the velocity if a electrons is x time. The velocity of neutronthe value of x is ..... (nearest integer) A) 1758. B) 1578. C) 8571. D) 1758. Show Answer Correct Answer: A) 1758. 18. The temperature at which a substance changes from a liquid to a gas. A) Boiling Point. B) Melting Point. C) Ballpoint Pen. D) 32$^{0}$ F. Show Answer Correct Answer: A) Boiling Point. 19. What is the maximum number of electrons that can be associated with the following set ofquantum numbers n = 2, l = 1, m =-1 A) 1. B) 2. C) 6. D) 8. Show Answer Correct Answer: B) 2. 20. What is the mass number (A) of an atom? A) Number of electrons plus protons. B) Number of protons plus neutrons. C) Number of neutrons only. D) Number of protons only. Show Answer Correct Answer: B) Number of protons plus neutrons. 21. Electrons have this type of charge? A) Negative. B) Positive. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Negative. 22. Who originally proposed the atomic theory? A) Democritus. B) Ernest Rutherford. C) J.J. Thompson. D) John Dalton. Show Answer Correct Answer: A) Democritus. 23. A table that shows the elements arranged by their atomic numbers A) Periodic Table. B) Dining Room Table. C) Wooden Table. D) Occasional Table. Show Answer Correct Answer: A) Periodic Table. 24. The cathode ray experiments led to which particle being discovered? A) Nucleus. B) Proton. C) Neutron. D) Electron. Show Answer Correct Answer: D) Electron. 25. Rutherford's alpha-particle scattering experiment was responsible for the discovery of A) NEUTRON. B) PROTON. C) ELECTRON. D) ATOMIC NUCLEUS. Show Answer Correct Answer: D) ATOMIC NUCLEUS. ← 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 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