This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 40 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A substance made up of only one kind of atom A) Element. B) Elementary. C) Ellie. D) Elephant. Show Answer Correct Answer: A) Element. 2. Atoms of the same element that have different numbers of neutrons A) Ion. B) Isotope. C) Nucleus. D) Electron cloud. Show Answer Correct Answer: B) Isotope. 3. In an atom, electrons ..... A) Are found within the nucleus. B) Stay in a region called the electron cloud. C) Orbit the nucleus like planets around the Sun. D) None of the above. Show Answer Correct Answer: B) Stay in a region called the electron cloud. 4. The ionisation energy of 10 times ionised sodium atom is A) 13.6 eV. B) 13.6x11 eV. C) 13.6 /11 eV. D) 13.6 x (11)2 eV. Show Answer Correct Answer: D) 13.6 x (11)2 eV. 5. The number of atoms present in the molecules of an element is called A) Formula. B) Atomicity. C) Valency. D) None of the above. Show Answer Correct Answer: B) Atomicity. 6. "This result was almost as incredible as if you fire a 15-inch shell at a piece of tissue paper and it comes back and hits you."Identify the scientist who made the above statement A) John Dalton. B) J.J. Thomson. C) Ernest Rutherford. D) Niels Bohr. Show Answer Correct Answer: C) Ernest Rutherford. 7. Which quantum no. Predicts about the splitting of main lines of spectrum under magnetic field A) Magnetic quantum no. B) Azimuithal quantum no. C) Principal quantum no. D) Spin quantum no. Show Answer Correct Answer: A) Magnetic quantum no. 8. Ernest Rutherford discovered which part of the atom through the use of gold foil experiment? A) Electron cloud. B) Neutron. C) Electron. D) Positive nucleus. Show Answer Correct Answer: D) Positive nucleus. 9. Maximum number of electrons in each orbital is? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 10. How is the number of neutrons in the nucleus of an atom calculated? A) Add the number of e-and p+ together. B) Subtract the number of e-from p+. C) Subtract the number of p+ from the mass number. D) Add the mass number to the number of e-. Show Answer Correct Answer: C) Subtract the number of p+ from the mass number. 11. Chemical symbol for sodium A) So. B) No. C) S. D) Na. Show Answer Correct Answer: D) Na. 12. The presence of anode rays inside the discharge tube was shown by? A) J.J. Thomson. B) Goldstein. C) Chadwick. D) Newton. Show Answer Correct Answer: B) Goldstein. 13. Calculation used to find the number of neutrons in an atom A) Atomic Mass-Atomic Number. B) Atomic Number-Atomic Mass. C) Atomic Mass-Electrons. D) None of these. Show Answer Correct Answer: A) Atomic Mass-Atomic Number. 14. X was born in Copenhagen on 7 October, 1885. He got the Nobel Prize for his work on the structure of Atom in 1922? Who is X A) Ernest Rutherford. B) Neils Bohr. C) JJ Thomson. D) John Dalton. Show Answer Correct Answer: B) Neils Bohr. 15. The electronic configuration of chlorine is A) 2, 7. B) 2, 8, 8, 7. C) 2, 8, 7. D) 2, 7, 8. Show Answer Correct Answer: C) 2, 8, 7. 16. How many orbitals can have the following quantum numbers, n = 3, l = 1, ml = 0? A) (a) 4. B) B) 2. C) (c) 1. D) (d) 3. E) (c). Show Answer Correct Answer: C) (c) 1. 17. The region at the center of an atom that contains most of the atom's mass A) Ion. B) Isotope. C) Nucleus. D) Electron cloud. Show Answer Correct Answer: C) Nucleus. 18. Element X has 6p and 6n, whereas Element Y has 6p and 8n. The relation between both of them is? A) Isobars. B) Isotopes. C) Noble elements. D) None of the above. Show Answer Correct Answer: B) Isotopes. 19. No of unpaired e in Fe+3 A) 4. B) 5. C) 3. D) 0. Show Answer Correct Answer: B) 5. 20. Particles found within the atom, mainly protons, neutrons, and electrons. A) Subatomic Particles. B) Submarine Particles. C) Element. D) Nucleus. Show Answer Correct Answer: A) Subatomic Particles. 21. The electrons closest to an atom's nucleus have less ..... than those further away. A) Mass. B) Energy. C) Charge. D) Attraction. Show Answer Correct Answer: B) Energy. 22. The symbol for SILICON is ..... A) Sc. B) Sl. C) S. D) Si. Show Answer Correct Answer: D) Si. 23. $^{40 }$$_{18 }$Ar, the number of neutrons in this atom is A) 18. B) 40. C) 22. D) 58. Show Answer Correct Answer: C) 22. 24. How many electronic transitions are possible between the first five energy levels of a hydrogen atom? A) 5. B) 8. C) 10. D) 12. Show Answer Correct Answer: C) 10. 25. An electron is in 4f subshell ..... values of principal quantum number and azimuthal quantum number? A) 3, 4. B) 4, 3. C) 4, -3 to +3. D) 3, 0. Show Answer Correct Answer: B) 4, 3. ← 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