This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Magnetic moment of N A) Square root of 15. B) Suarez root of 3. C) Square root of 8. D) 0. Show Answer Correct Answer: A) Square root of 15. 2. How do you calculate the number of neutrons in an atom? A) Mass Number-Atomic Number. B) Number of Protons-Number of Electrons. C) Mass Number + Atomic Number. D) None of the above. Show Answer Correct Answer: A) Mass Number-Atomic Number. 3. The radii of Bohr orbit are directly proportional to ..... A) Principal quantum number. B) Square of principal quantum number. C) Cube of principal quantum number. D) Independent of principal quantum number. Show Answer Correct Answer: B) Square of principal quantum number. 4. Give designation to an electron having following set of quantum numbersn=3, l=2 A) 3s. B) 2p. C) 3d. D) 2d. Show Answer Correct Answer: C) 3d. 5. Select the incorrect statement about anode rays A) Anode rays are positively charged gaseous ions. B) The charge to mass ratio of anode rays does not depend on the nature of gas. C) Anode rays travel towards cathode. D) Anode rays travel in straight lines in the absence of electric and magnetic field. Show Answer Correct Answer: B) The charge to mass ratio of anode rays does not depend on the nature of gas. 6. A proton is ..... A) A negatively charged subatomic particle. B) A positively charged subatomic particle. C) A neutrally charged subatomic particle. D) The only subatomic particle located in the nucleus. Show Answer Correct Answer: B) A positively charged subatomic particle. 7. Which of the following is not a property of cathode rays? A) They travel in straight lines. B) They possess kinetic energy. C) They get deflected towards the negative plate in an electric field. D) They move in a circular manner if a perpendicular magnetic field is applied. Show Answer Correct Answer: C) They get deflected towards the negative plate in an electric field. 8. K SHELL-2, L SHELL-7, M SHELL-2 IS ELECTRONIC CONFIGURATION OF: A) HYDROGEN. B) SODIUM. C) MAGNESIUM. D) NONE. Show Answer Correct Answer: D) NONE. 9. What is maximum number of possible lines formed for all the transitions involving the first six energy levels in the emission spectrum for the hydrogen atom? A) 15. B) 11. C) 6. D) 5. Show Answer Correct Answer: A) 15. 10. The symbol for ALUMINUM is ..... A) Al. B) A. C) Am. D) An. Show Answer Correct Answer: A) Al. 11. An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus? A) +25. B) +30. C) -25. D) -30. Show Answer Correct Answer: A) +25. 12. Which of the following orbital have dumbell shape A) S. B) P. C) D. D) F. Show Answer Correct Answer: B) P. 13. Which of the following has variable valency? A) Sodium. B) Potassium. C) Iron. D) None of the above. Show Answer Correct Answer: C) Iron. 14. Most of the atom is filled with A) Electrons. B) Empty space. C) The nucleus. D) Protons. Show Answer Correct Answer: B) Empty space. 15. In the Bohr model of the atom, electrons orbit the nucleus in specific paths. What are these paths called? A) Orbits. B) Shells. C) Clouds. D) Levels. Show Answer Correct Answer: B) Shells. 16. The isotope C-12 is present in abundance A) 96.9%. B) 98.9%. C) 99.7%. D) None of these. Show Answer Correct Answer: B) 98.9%. 17. Which subatomic particle was discovered by James Chadwick? A) Proton. B) Electron. C) Neutron. D) Positron. Show Answer Correct Answer: C) Neutron. 18. Which of the following has six valence electrons? A) Sodium. B) Iodine. C) Oxygen. D) Neon. Show Answer Correct Answer: C) Oxygen. 19. Protons and neutrons are made up of A) Quarks. B) Neutrinos. C) Antineutrinos. D) Muon. Show Answer Correct Answer: A) Quarks. 20. What does the mass number of an element represent? A) The number of protons in an atom. B) The number of neutrons in an atom. C) The number of electrons in an atom. D) The number of protons and neutrons in an atom. Show Answer Correct Answer: D) The number of protons and neutrons in an atom. 21. What is the valency of an atom with an electron configuration of $1s^2 2s^2 2p^6 3s^2 3p^5$ A) 1. B) 2. C) 3. D) 7. Show Answer Correct Answer: A) 1. 22. The nucleus of the atom contains 8 protons and 9 neutrons. The atom is electrically neutral. How many electrons does this atom have? A) 4. B) 8. C) 9. D) 15. Show Answer Correct Answer: B) 8. 23. How many total orbitals are in 4f subshell? A) 7. B) 5. C) 9. D) 14. Show Answer Correct Answer: C) 9. 24. TYPE OF ION FORMED BY ALUMINIUM IS: A) AL3+. B) AL2+. C) AL3-. D) AL2-. Show Answer Correct Answer: A) AL3+. 25. Which statement is accurate regarding subatomic particles? A) Electrons are the heaviest particle, with a positive charge. B) Protons and electrons are equal in mass with positive charges. C) Electrons are neutral with the least mass. D) Protons have a positive charge with a mass of 1 amu and neutrons are neutral with the same mass as a proton. Show Answer Correct Answer: D) Protons have a positive charge with a mass of 1 amu and neutrons are neutral with the same mass as a proton. ← 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