This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part Ii > Class 12 Physics (Part Ii) Chapter 12 Atoms – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part Ii) Chapter 12 Atoms Quiz 3 (40 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If we increase the charges of two particles, the force between them ..... A) Potato. B) Stays the same. C) Increases. D) Decreases. Show Answer Correct Answer: C) Increases. 2. The smallest common particle in the atom ..... A) Electron. B) Nucleus. C) Neutron. D) Proton. Show Answer Correct Answer: A) Electron. 3. Which chart should you reference for information about elements? A) Elemental Map. B) Periodic Table. C) Table of Atoms. D) None of these. Show Answer Correct Answer: B) Periodic Table. 4. If we increase the distance two charges are separated by, the force between them ..... A) Tomato. B) Increases. C) Decreases. D) Stays the same. Show Answer Correct Answer: C) Decreases. 5. Which of the following best describes a chemical bond? A) A mixture of elements. B) A type of atom. C) A molecule with a charge. D) A force that holds atoms together. Show Answer Correct Answer: D) A force that holds atoms together. 6. What is the mass of one mole of aluminum? A) 27 g. B) 14 g. C) 13 g. D) 54 g. Show Answer Correct Answer: A) 27 g. 7. The ratio of radii of orbits corresponding to first and second excited state of hydrogen atom is A) 4:9. B) 2:3. C) 1:2. D) 1. Show Answer Correct Answer: A) 4:9. 8. What is formed when two or more atoms bond together? A) Isotope. B) Ion. C) Element. D) Molecule. Show Answer Correct Answer: D) Molecule. 9. Which of the following states of matter has a definite volume and a definite shape? A) Solid. B) Plasma. C) Liquid. D) Gas. Show Answer Correct Answer: A) Solid. 10. This is where electrons hang out ..... it goes around the nucleus of an atom. A) Cumulus. B) Apple Icloud. C) Electron cloud. D) Stratus. Show Answer Correct Answer: C) Electron cloud. 11. $^{}$$^{}$$_{}$$^{}$ ..... with specific characteristics and is made up of only one atom A) 8. B) Element. C) Protron. D) Chemical. Show Answer Correct Answer: B) Element. 12. The molar mass of an element is the mass of one ..... of the element. A) Atom. B) Gram. C) Mole. D) Molecule. Show Answer Correct Answer: C) Mole. 13. The unit of charge is: A) The Coulomb. B) The kilogram. C) The meter. D) The Newton. Show Answer Correct Answer: A) The Coulomb. 14. Protons and neutrons are found in the center of the atom called the: A) Shell. B) Cell. C) Neutron. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 15. Protons and neutrons clump together to form the ..... of an atom. A) Centrosome. B) Outer Shell. C) Orbits. D) Nucleus. Show Answer Correct Answer: D) Nucleus. 16. What is the main field of science that studies atoms and molecules? A) Biology. B) Chemistry. C) Physics. D) Geology. Show Answer Correct Answer: B) Chemistry. 17. What mass of Oxygen Gas will be needed to completely react with 6g of Hydrogen Gas? A) 54. B) 9. C) 42. D) 48. Show Answer Correct Answer: D) 48. 18. What is the RATIO of Mass of Hydrogen to the Mass of Oxygen in any given source of water A) 1:8. B) 1:1. C) 8:1. D) 4:1. Show Answer Correct Answer: A) 1:8. 19. When an electron revolves round the nucleus, A) Its electrostatic potential energy is zero and kinetic energy is positive. B) Its electrostatic potential energy is negative and kinetic energy is positive. C) Its electrostatic potential energy is negative and kinetic energy is zero. D) Its electrostatic potential energy and kinetic energy, both are zero. Show Answer Correct Answer: B) Its electrostatic potential energy is negative and kinetic energy is positive. 20. What is the charge of a shirt that has 9 electrons, 3 protons, and 6 neutrons? A) -15. B) +6. C) 0. D) -6. Show Answer Correct Answer: D) -6. 21. Element or compound?O$_{2}$ A) Element. B) Compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) Element. 22. In the standard model, the particle considered to be an elementary particle is a(n) A) Neutron. B) Proton. C) Alpha particle. D) Electron. Show Answer Correct Answer: D) Electron. 23. Where do electrons travel in an atom? A) Outside the atom. B) Inside the nucleus. C) Inside the protons. D) Around the nucleus. Show Answer Correct Answer: D) Around the nucleus. 24. All atoms consist of mostly empty space. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. Which statement best explains how the mass of an atom is organized? A) The mass is spread evenly throughout the electron cloud. B) Most of the mass is contained in the electron cloud. C) The mass is spread evenly throughout the whole atom. D) Most of the mass is contained in the nucleus. Show Answer Correct Answer: D) Most of the mass is contained in the nucleus. 26. The order of velocity of electron in ground state of hydrogen atom is A) $10^{-6}$. B) 10 m/s. C) $10^7$. D) $10^6$. Show Answer Correct Answer: D) $10^6$. 27. This is any combination of two or more atoms from different elements that are chemically combined. A) Pure substance. B) Molecule. C) Compound. D) Element. Show Answer Correct Answer: C) Compound. 28. What is needed to turn a solid into a liquid? A) Cold/taking heat away. B) Heat/adding heat. C) Increasing the amount of the solid. D) Gas. Show Answer Correct Answer: B) Heat/adding heat. 29. . The columns on the periodic table that are color coded and describe the number of electrons in the outer shell of the atomic structure of the element: A) Families. B) Groups. C) Periods. D) None of the above. Show Answer Correct Answer: B) Groups. 30. What are the three main parts of an atom? A) Protons, neutrons, and electrons. B) Protons, electrons, and molecules. C) Neutrons, electrons, and ions. D) Protons, ions, and molecules. Show Answer Correct Answer: A) Protons, neutrons, and electrons. 31. What is the sum of an atom's protons and neutrons called? A) Atomic mass. B) Atom. C) Atomic number. D) Atomic theory. Show Answer Correct Answer: A) Atomic mass. 32. This is a one or two letter representation of each element that is generally close to the element's name. The first letter of this will ALWAYS be capitalized. A) Chemical symbol. B) Chemical number. C) Atomic number. D) Atomic mass. Show Answer Correct Answer: A) Chemical symbol. 33. What name is given to the number of protons in an atom? A) Mass number. B) Atomic number. C) Chemical symbol. D) Symbol. Show Answer Correct Answer: B) Atomic number. 34. In Physics, Opposites ..... A) Repel. B) Attract. C) All the above. D) None of the above. Show Answer Correct Answer: B) Attract. 35. This is the central region of an atom and where protons and neutrons hang out (but the protons and neutrons still follow proper social distancing rules!). A) The Periodic Table of Elements. B) Nucleus. C) Atomic number. D) Electron cloud. Show Answer Correct Answer: B) Nucleus. 36. This subatomic particle of an atom has a NEGATIVE charge. A) Neutron. B) Proton. C) Electron. D) Atom. Show Answer Correct Answer: C) Electron. 37. Who invented the simplified version of the atom? A) Sir Isaac Newton. B) Niels Bohr. C) Albert Einstein. D) Dmitri Mendeleev. Show Answer Correct Answer: B) Niels Bohr. 38. Which of the following is a molecule? A) Oxygen (O2). B) Iron (Fe). C) Helium (He). D) Gold (Au). Show Answer Correct Answer: A) Oxygen (O2). 39. The chemical formula of ammonium dichromate is A) (NH$_{4}$)$_{2}$Cr$_{2}$O$_{7}$. B) NH$_{4}$(Cr$_{2}$O$_{7}$)$_{2}$. C) (NH$_{4}$)$_{3}$Cr$_{2}$O$_{7}$. D) NH$_{4}$Cr$_{2}$O$_{7}$. Show Answer Correct Answer: A) (NH$_{4}$)$_{2}$Cr$_{2}$O$_{7}$. 40. Atoms can be seen with the naked eye A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← PreviousRelated QuizzesScience QuizzesClass 12 QuizzesClass 12 Physics (Part Ii) Chapter 12 Atoms Quiz 1Class 12 Physics (Part Ii) Chapter 12 Atoms Quiz 2Class 12 Physics (Part Ii) Chapter 10 Wave Optics QuizClass 12 Physics (Part Ii) Chapter 11 Dual Nature Of Radiation And Matter QuizClass 12 Physics (Part Ii) Chapter 13 Nuclei QuizClass 12 Physics (Part Ii) Chapter 14 Semiconductor Electronics Materials QuizClass 12 Physics (Part Ii) Chapter 9 Ray Optics And Optical Instruments Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books