This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This subatomic particle has a negative charge. A) Proton. B) Neutron. C) Electron. D) None of the above. Show Answer Correct Answer: C) Electron. 2. A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass A) Electron Shells. B) Orbitals. C) Electron Cloud. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 3. What does Bohr's model fail to explain? A) Multi-electron atoms. B) Spectra of hydrogen. C) Only hydrogen atom. D) Electron cloud. Show Answer Correct Answer: A) Multi-electron atoms. 4. The atomic number tells you what? A) Number of electrons. B) Number of protons. C) Number of neutrons. D) Both electrons and protons in an atom. Show Answer Correct Answer: B) Number of protons. 5. How did Rutherford discover the proton? A) Cathode tube ray experiment. B) Gold Foil Experiment. C) Planetary Model. D) Plum Pudding Model. Show Answer Correct Answer: B) Gold Foil Experiment. 6. The ..... contains the protons and neutrons of an atom, and is most of the mass of an atom A) Nucleus. B) Atomic Number. C) Atomic Mass. D) Electrons. Show Answer Correct Answer: A) Nucleus. 7. What has no charge (neutral), mass of 1 amu, and located in the nucleus? A) Proton. B) Electron. C) Neutron. D) Valence electron. Show Answer Correct Answer: C) Neutron. 8. What is the mass of a neutron? A) 0 amu. B) 1 amu. C) 1.5 amu. D) 2 amu. Show Answer Correct Answer: B) 1 amu. 9. What shell represents the lowest energy level of an atom? A) The 1st shell. B) The 3rd shell. C) The 2nd shell. D) The 4th shell. Show Answer Correct Answer: A) The 1st shell. 10. The X-ray was invented by A) William Crookes. B) Wilhelm Roentgen. C) Eugen Goldstein. D) Julius Plucker. Show Answer Correct Answer: B) Wilhelm Roentgen. 11. All of the mass of the atom is found in the ..... A) Protons. B) Electrons. C) Nucleus. D) Electron Clouds. Show Answer Correct Answer: C) Nucleus. 12. The number of valence electrons in a graphite atom is: A) 2. B) 4. C) 3. D) 5. Show Answer Correct Answer: B) 4. 13. What is the charge and location of an electron? A) Electrons have a positive charge and are in the electron cloud. B) Electrons have a negative charge and are in the nucleus. C) Electrons have a positive charge and are in the electron cloud. D) Electrons have a negative charge and are in the electron cloud. Show Answer Correct Answer: D) Electrons have a negative charge and are in the electron cloud. 14. Elements after actinium is called A) Lanthanides. B) Actinides. C) D-block elements. D) P-block elements. Show Answer Correct Answer: B) Actinides. 15. He claimed that matter was made of small, hard particles that he called "atomos." A) Democritis. B) Dalton. C) Moseley. D) Einstein. Show Answer Correct Answer: A) Democritis. 16. The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of: A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 17. Which of the following people said the atom was a solid sphere? A) Dalton. B) Thompson. C) Rutherford. D) Bohr. Show Answer Correct Answer: A) Dalton. 18. A gas absorbs a photon of 355nm and emits at two wavelengths. If one of the emission is at 680nm, the other is at A) 1035nm. B) 325nm. C) 743nm. D) 518nm. Show Answer Correct Answer: C) 743nm. 19. In the ground state of the atoms, the orbital's are filled with electronsin the ..... order of energies A) Decreasing. B) Increasing. C) Same. D) Parallel. Show Answer Correct Answer: B) Increasing. 20. A sub-atomic particle with a negative charge A) Proton. B) Neutron. C) Electron. D) Nucleus. Show Answer Correct Answer: C) Electron. 21. The isotope deuterium of hydrogen has A) I. No neutrons and one proton. B) II. One neutrons and two protons. C) III. One electron and two neutron. D) IV. One proton and one neutron. Show Answer Correct Answer: D) IV. One proton and one neutron. 22. The electron first fills singlybefore pairing in any orbital's is applicable when orbital are having ..... energy A) More. B) Less. C) Equal. D) No. Show Answer Correct Answer: C) Equal. 23. Indicate the number of unpaired electrons in the Cl atom. A) 0. B) 5. C) 3. D) 1. Show Answer Correct Answer: A) 0. 24. The total number of protons and neutrons in an atom is called the ..... A) Atomic number. B) Proton number. C) Mass number. D) Weight number. Show Answer Correct Answer: C) Mass number. 25. The ion of an element has 2 positive charges. The mass number of atom of this element is 26 and the number of neutrons is 13. What is the number of electrons in the ion? A) 10. B) 11. C) 12. D) 13. Show Answer Correct Answer: B) 11. ← 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