This quiz works best with JavaScript enabled. Home > Science > Chemistry – Quiz 62 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 62 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which would have a greater mass, 10 atoms of H or 10 atoms of He? A) 10 atoms of H. B) 10 atoms of He. C) They are the same. D) 6.02 x 1023. Show Answer Correct Answer: B) 10 atoms of He. 2. Atoms have equal number of A) Protons & electrons. B) Protons & neutrons. C) Electrons & neutrons. D) None of above. Show Answer Correct Answer: A) Protons & electrons. 3. Molecules that store genetic information are A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: B) Nucleic acids. 4. What is extracted from Bauxite? A) Tin. B) Mica. C) Copper. D) Aluminium. Show Answer Correct Answer: D) Aluminium. 5. What is an atomic group? A) All the elements on the periodic table. B) Elements in the same vertical column on the periodic table. C) Elements in the same horizontal column on the periodic table. D) A group of scientists who study atoms. Show Answer Correct Answer: B) Elements in the same vertical column on the periodic table. 6. Which of the following is not one of the 4 main elements found in all macromolecules? A) Carbon. B) Hydrogen. C) Oxygen. D) Sodium. Show Answer Correct Answer: D) Sodium. 7. What precipitate forms when you mix barium nitrate with sodium sulfate? A) Sodium nitrate. B) Barium nitrate. C) Barium sulfate. D) Sodium sulfate. Show Answer Correct Answer: C) Barium sulfate. 8. Pure substance made of only 1 type of atom A) Molecule. B) Element. C) Compond. D) Atom. Show Answer Correct Answer: B) Element. 9. Which is NOT true about atom? A) It is electrically neutral. B) Its central part contains protons and neutrons. C) It has an equal number of protons and neutrons. D) The number of protons determines the chemical property of an element. Show Answer Correct Answer: C) It has an equal number of protons and neutrons. 10. Long-term storage of energy A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 11. What SI unit is used to measure the number of representative particles in a substance? A) Kilogram. B) Ampere. C) Kelvin. D) Mole. Show Answer Correct Answer: D) Mole. 12. Which of the following is not a major function of protein? A) Provides structure for the body. B) Acts as a catalyst for chemical reactions in the form of enzymes. C) Provides energy for the body. D) All of the above are functions of protein. Show Answer Correct Answer: C) Provides energy for the body. 13. Diagrams that represent the valence electrons of atoms or molecules ..... A) Periodic table. B) Bohr diagrams. C) Lewis Dot structures. D) Atomic theory. Show Answer Correct Answer: C) Lewis Dot structures. 14. Which of the following changes is a physical change of matter? A) Water evaporating. B) Paper burning. C) A nail rusting. D) A silver spoon tarnishing. Show Answer Correct Answer: A) Water evaporating. 15. Acid rain is due to air pollution by? A) Methane. B) Carbon dioxide. C) Carbon monoxide. D) Nitrous oxide and Sulphur dioxide. Show Answer Correct Answer: D) Nitrous oxide and Sulphur dioxide. 16. Negatively charged particles found outside of the nucleus of an atom are called ..... A) Protons. B) Neutrons. C) Electrons. D) None of above. Show Answer Correct Answer: C) Electrons. 17. According the the modern atomic theory, it is nearly impossible to determines an electrons exact A) Color. B) Position. C) Charge. D) Mass. Show Answer Correct Answer: B) Position. 18. The single acid which dissolves gold is? A) Nitric acid. B) Aqua regia. C) Selenic acid. D) Hydrochloric acid. Show Answer Correct Answer: B) Aqua regia. 19. Which element in period four is a metalloid? A) Silicon. B) Gallium. C) Arsenic. D) Titanium. Show Answer Correct Answer: C) Arsenic. 20. Energy stored inside chemical bonds is known as. A) Radiant Energy. B) Potential Energy. C) Kinetic Energy. D) Mechanical Energy. Show Answer Correct Answer: B) Potential Energy. ← PreviousNext →Related QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books