This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 2 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is true about glacial ethanoic acid? A) It contains free mobile ions. B) It turns dry blue litmus paper red. C) It has a molecular formula of HCOOH. D) It is unable to conduct electricity. Show Answer Correct Answer: D) It is unable to conduct electricity. 2. What kind of bond cleavage yields charged fragments? A) Heterolysis. B) Homolysis. C) Substitution. D) Unifrom. Show Answer Correct Answer: A) Heterolysis. 3. Malleability and ductility are characteristic of substances with A) Covalent bonds. B) Ionic bonds. C) Lewis structures. D) Metallic bonds. Show Answer Correct Answer: D) Metallic bonds. 4. What is the correct formula for aluminum sulfide? A) Al3S2. B) Al2S. C) AlS2. D) Al2S3. Show Answer Correct Answer: D) Al2S3. 5. A single water molecule is made up of ..... A) One atom of hydrogen and one atom of oxygen. B) One atom of sodium and one atom of chlorine. C) One atom of hydrogen and two atoms of oxygen. D) Two atoms of hydrogen and one atom of oxygen. Show Answer Correct Answer: D) Two atoms of hydrogen and one atom of oxygen. 6. What happens when a few drops of bromine water are added to excess hex-1-ene and the mixture is shaken? I. The colour of the bromine water disappears.II. The organic product formed does not contain any carbon-carbon double bonds.III. 2-bromohexane is formed. A) I and II only. B) I and III only. C) II and III only. D) I, II and III. Show Answer Correct Answer: A) I and II only. 7. What is the monomer of polyethene? A) Ethene. B) Propene. C) Chloroethene. D) Styrene. Show Answer Correct Answer: A) Ethene. 8. What information do you need to write a chemical equation? A) Reactants. B) Products. C) Chemical formulas. D) All of the above. Show Answer Correct Answer: D) All of the above. 9. The molecular formula for Ammonium carbonate is A) (NH4 )2CO3. B) (NH4 )CO3. C) (NH4 )2CO. D) None of above. Show Answer Correct Answer: A) (NH4 )2CO3. 10. When heat is added to matter, the molecules tend to A) Move faster and farther apart. B) Slow down. C) Nothing, heat has no impact on the state of matter. D) Freeze. Show Answer Correct Answer: A) Move faster and farther apart. 11. This rule states that the energy cannot be gained or lost in a chemical reaction ..... A) Law of Conservation of Mass. B) Theory of Relativity. C) Law of Conservation of Energy. D) Theory of Energy Saving. Show Answer Correct Answer: C) Law of Conservation of Energy. 12. Property that can be measured and observed without changing the composition or identity of a substance. A) Extensive Property. B) Chemical Property. C) Physical Property. D) Intensive Property. Show Answer Correct Answer: C) Physical Property. 13. Why is ammonia used to test for copper in a solution? Choose the best answer. A) Different people see colors differently. B) The ammonia test can detect smaller amounts of copper than the human eye can detect. C) The odor of ammonia is easily detected by most people. D) All chemical tests are superior to relying on information provided by the senses. Show Answer Correct Answer: B) The ammonia test can detect smaller amounts of copper than the human eye can detect. 14. In which of the following process a chemical reaction has taken place? A) Ice melts into water. B) A wet shirt got dried in sunlight. C) A brown layer is formed over iron rod kept in air. D) Sugar getting dissolved in water. Show Answer Correct Answer: C) A brown layer is formed over iron rod kept in air. 15. What is the ground state electron configuration for an atom of tin? A) [Kr] 5s24d105p2. B) [Kr] 5s25d105p2. C) [Kr] 5s24d95p3. D) [Kr] 5s25d105p2. Show Answer Correct Answer: A) [Kr] 5s24d105p2. 16. The gaseous state of a substance that is generally a liquid or solid at room temperature. A) Liquid. B) Vapor. C) Volume. D) Oxgyen. Show Answer Correct Answer: B) Vapor. 17. A gas is a form of matter that A) Has a definite volume. B) Is generally a liquid or solid at room temperature. C) Takes the shape and volume of its container. D) Is difficult to compress. Show Answer Correct Answer: C) Takes the shape and volume of its container. 18. A branch of chemistry that is concerned with how and why chemicals interact is ..... A) Analytical chemistry. B) Biochemistry. C) Theoretical chemistry. D) Physical chemistry. Show Answer Correct Answer: C) Theoretical chemistry. 19. How does the structure of the cell membrane help the cell regulate water? A) Phospholipid molecules form a double layer of the cell membrane. B) The heads of one layer face outside, the heads of the other face inside the cell. C) The heads attract water, tails repel water. D) All of the above. Show Answer Correct Answer: D) All of the above. 20. Calculate the formula mass of $ KCl$ . (Atomic mass of $ K=39$, $ Cl=35.5$ ) A) 74.5. B) 4.5. C) 90. D) None of above. Show Answer Correct Answer: A) 74.5. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books