This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the mass number of an element? A) Incorrect option 3. B) Incorrect option 2. C) Incorrect option 1. D) Correct answer for the question. Show Answer Correct Answer: D) Correct answer for the question. 2. Which gas is liberated when Zinc reacts with hydrochloric acid A) No gas. B) Hydrogen. C) Chlorine. D) None of the above. Show Answer Correct Answer: B) Hydrogen. 3. How many periods or rows are there on the periodic table? A) 6. B) 7. C) 17. D) 18. Show Answer Correct Answer: B) 7. 4. Which of the following elements is a noble gas? A) Hydrogen. B) Oxygen. C) Neon. D) Nitrogen. Show Answer Correct Answer: C) Neon. 5. According to Bohr's model, the radius of the second orbit of helium atom is A) 0.53 A. B) 1.06 A. C) 2.12 A. D) 0.265 A. Show Answer Correct Answer: B) 1.06 A. 6. Which transition in the hydrogen atomic spectrukbwill have the same wavelength as the transition n=4 to n= 2 of He+ spectrum? A) N=4 to n=3. B) N=4 to n=2. C) N=2 to n=1. D) N=3 to n=1. Show Answer Correct Answer: C) N=2 to n=1. 7. Identify an element with twice the number of electrons in its L shell as in its K shell. A) Sulfur. B) Aluminium. C) Carbon. D) Silicon. Show Answer Correct Answer: C) Carbon. 8. Be is the symbol for the element ..... A) Barium. B) Bromine. C) Boron. D) Beryllium. Show Answer Correct Answer: D) Beryllium. 9. Proton was discovered by A) Thomson. B) Rutherford. C) Chadwick. D) Goldstein. Show Answer Correct Answer: D) Goldstein. 10. WHO DISCOVERED PROTONS? A) JAMES CHADWICK. B) E.RUTHERFORD. C) DALTON. D) E.GOLDSTEIN. Show Answer Correct Answer: D) E.GOLDSTEIN. 11. HOW MANY ELECTRONS ARE PRESENT IN OXIDE ION? A) 8. B) 9. C) 10. D) 11. Show Answer Correct Answer: C) 10. 12. Which particle does not contribute mass to the atom? A) Proton. B) Neutron. C) Electron. D) Nucleus. Show Answer Correct Answer: C) Electron. 13. "It is impossible to determine simultaneously, the exactposition and exact momentum (or velocity) of an electron." This is the statement of A) Hund's Rule. B) Pauli's Exclusion Principle. C) Aufbau Principle. D) Heisenberg's Uncertainty Principle. Show Answer Correct Answer: D) Heisenberg's Uncertainty Principle. 14. What is the uncertainty in the position of a particle if the uncertainty is its momentum is 3.3 x 10$^{-2}$ kg ms$^{-1}$ . A) 1.6 x 10$^{-35}$ m. B) 3.2 x 10$^{-33}$ m. C) 3.2 x 10$^{-34}$ m. D) 1.6 x 10$^{-33}$ m. Show Answer Correct Answer: D) 1.6 x 10$^{-33}$ m. 15. What is the charge and location of a neutron? A) Neutrons have a positive charge and are in the nucleus. B) Neutrons have no charge and are in the electron cloud. C) Neutrons have no charge and are in the nucleus. D) Neutrons have a negative charge and are in the nucleus. Show Answer Correct Answer: C) Neutrons have no charge and are in the nucleus. 16. 1-Which one will have the highest 2$^{nd}$ ionisation energy? A) 1s$^{2}$ 2s$^{2}$ 2p$^{6}$ 3s$^{1}$. B) 1s$^{2}$ 2s$^{2}$ 2p$^{4}$. C) 1s$^{2}$ 2s$^{2 }$2p$^{6}$. D) 1s$^{2}$ 2s$^{2}$ 2p$^{6}$ 3s$^{2}$. Show Answer Correct Answer: A) 1s$^{2}$ 2s$^{2}$ 2p$^{6}$ 3s$^{1}$. 17. Which of the following led to the discovery of neutrons? A) Discharge tube experiment. B) Alpha ray scattering experiment. C) Chadwick's experiment. D) Oil drop experiment. Show Answer Correct Answer: C) Chadwick's experiment. 18. What did John Dalton describe atoms as? A) Plum pudding models. B) Orbiting electrons. C) Solid spheres. D) Nuclear models. Show Answer Correct Answer: C) Solid spheres. 19. How many orbitals can have the following set of quantum numbers, n = 3, l = 1, ml = +1? A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: B) 1. 20. AN ATOM DIFFERS FROM ION WITH RESPECT TO: A) NO OF PROTONS. B) NO OF NEUTRONS. C) NO OF ELECTRONS. D) MASS NO. Show Answer Correct Answer: C) NO OF ELECTRONS. 21. Electrons have less mass than protons do A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. Mass number of an atom is 27 and no.of neutrons is 14. What is the no. of protons? A) 14. B) 13. C) 15. D) 17. Show Answer Correct Answer: B) 13. 23. Atoms having same atomic number but different mass numbers are called A) Isotopes. B) Topes. C) Isobars. D) Both. Show Answer Correct Answer: A) Isotopes. 24. What is the nickname for Thomson's model? A) Plum pudding model. B) Electron cloud model. C) Billiard ball model. D) Nuclear model. Show Answer Correct Answer: A) Plum pudding model. 25. Which of the following correctly represents the electronic distribution in the Mg atom?(a) 3, 8, 1(b) 2, 8, 2(c) 1, 8, 3(d) 8, 2, 2 A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. ← 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