This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry Basics > Chemistry – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. According to periodic trends, which element would have more valence electrons than oxygen? A) Selenium (Se). B) Carbon (C). C) Chlorine (Cl). D) Phosphorus (P). Show Answer Correct Answer: C) Chlorine (Cl). 2. Elements are found in the ..... A) Lithosphere, biosphere, hydrosphere, and the atmosphere. B) Lithosphere, elmentsphere, and the universe. C) Atmosphere, universe, and lithosphere. D) Periodic table of elements. Show Answer Correct Answer: A) Lithosphere, biosphere, hydrosphere, and the atmosphere. 3. What are Chemical Changes? A) Characteristics that can be observed/measured without changing the identity of the substance. B) Changes that do not affect the identity of the substance. C) A property that depends on the amount of matter in a sample. D) When one or more substances are converted into different substances. Show Answer Correct Answer: D) When one or more substances are converted into different substances. 4. A ..... can be used to help visualize microscopic structures and events. A) Variable. B) Theory. C) Hypothesis. D) Model. Show Answer Correct Answer: D) Model. 5. Can solid nitrogen conduct electricity? A) Yes, it consists of ions. B) Yes, it is ionic compound. C) No, it is covalent compound. D) No, it exist as neutral molecule. Show Answer Correct Answer: D) No, it exist as neutral molecule. 6. The use of mathematics and computers to understand the principles behind observed chemical behavior and to design and predict the properties of new compounds. A) Theoretical Chemistry. B) Organic Chemistry. C) Inorganic Chemistry. D) Biochemistry. Show Answer Correct Answer: A) Theoretical Chemistry. 7. Metals are malleable, this means they are ..... A) Shiny. B) Good conductors of heat and electricity. C) Can be hammered into sheets. D) Dull. Show Answer Correct Answer: C) Can be hammered into sheets. 8. A local water quality standard for a particular metal is 100 ppm. Which of the following describes what 100 ppm means? A) 1/1, 000, 000. B) 1, 000/1, 000, 000. C) 100/1, 000, 000. D) 10/1, 000, 000. Show Answer Correct Answer: C) 100/1, 000, 000. 9. Butter bean seeds were placed in dishes lined with moist paper towel for 5 days at different temperatures & germination was measured. Which of the following is the independent variable? A) Number of seeds. B) Time. C) Type of seed. D) Temperature. Show Answer Correct Answer: D) Temperature. 10. Which of the following are the benefits of using catalysts in industrial processes? (1)Needing higher temperatures for reactions(2) Lowering the operating temperature(3) Getting more product in a relatively shorter period oftime A) And (2) only. B) And (3) only. C) And (3) only. D) , (2) and (3). Show Answer Correct Answer: B) And (3) only. 11. In a neutral atom, the atomic number is also equal to which of the following? A) The number of protons. B) The number of electrons. C) The number of protons and neutrons. D) The number of neutrons. E) The number of protons and electrons. Show Answer Correct Answer: E) The number of protons and electrons. 12. Argon (proton number =18) is inert to any chemical reaction because A) It is light. B) It is located in Group 18. C) It has achieved stable octet electron arrangement. D) It has achieved stable duplet electron arrangement. Show Answer Correct Answer: C) It has achieved stable octet electron arrangement. 13. What is the charge of S? A) 0. B) +1. C) -1. D) -2. Show Answer Correct Answer: D) -2. 14. A substance that consists of only one type of atom A) Compound. B) Element. C) Mixture. D) Solute. Show Answer Correct Answer: B) Element. 15. Coordination No. = 6No. of Molecules = 1APF = 0.52Relationship (a to r) = a=2r A) Face Centered Cubic. B) Body Centered Cubic. C) Hexagonal Closed Pack. D) Simple Cubic. Show Answer Correct Answer: D) Simple Cubic. 16. Consider the reaction:2 H2O + energy $\rightarrow$ 2H2 + O2 A) Endothermic because releasing energy. B) Endothermic because absorbing energy. C) Exothermic because absorbing energy. D) Exothermic because releasing energy. Show Answer Correct Answer: B) Endothermic because absorbing energy. 17. An example of a chemical property is ..... A) Change of State. B) Burning. C) Density. D) Flammability. Show Answer Correct Answer: D) Flammability. 18. When bromine water is shaken with a liquid organic compound, it is rapidly decolourized. What can be determined from this test? A) The compound is an alkene. B) The compound is an alkane. C) The compound is an iodoalkane. D) The compound is an alcohol. Show Answer Correct Answer: A) The compound is an alkene. 19. ..... is everything around us. It takes up space and has mass. A) Matter. B) Atom. C) Molecules. D) Chemistry. Show Answer Correct Answer: A) Matter. 20. Biochemistry deals with A) Chemical changes in non living things. B) Physical and chemical changes in humans. C) Physical changes. D) I don't know. Show Answer Correct Answer: B) Physical and chemical changes in humans. 21. Among are the characteristics of Polycrystalline materials except ..... A) Crystallographic orientation varies from grain to grain. B) Composed of a collection of small crystals or grains. C) There exists an atomic mismatch within region of grains. D) Everything in the list are characteristics of Polycrystalline materials. Show Answer Correct Answer: D) Everything in the list are characteristics of Polycrystalline materials. 22. How many atoms is in this formula? Na2 CO3 A) 5. B) 6. C) 4. D) 3. Show Answer Correct Answer: B) 6. 23. What is the name of the compound N2O3? A) Nitrous oxide. B) Dinitrogen trioxide. C) Dinitrogen oxide. D) Sodium dioxide. Show Answer Correct Answer: B) Dinitrogen trioxide. 24. A form of matter that has a definite composition and distinct properties. A) Element. B) Mixture. C) Compound. D) Pure Substance. Show Answer Correct Answer: D) Pure Substance. 25. Wood + oxygen $\rightarrow$ carbon dioxide + water +energy ; what are the products A) Wood and oxygen. B) Carbon dioxide and water. C) Oxygen and energy. D) Wood and energy. Show Answer Correct Answer: B) Carbon dioxide and water. 26. A mixture in which substances are not evenly mixed A) Chemical change. B) Physical change. C) Homogeneous mixture. D) Heterogeneous mixture. Show Answer Correct Answer: D) Heterogeneous mixture. 27. Wood burning is an example of ..... A) Physical intensive property. B) Physical extensive property. C) Physical change. D) Chemical change. Show Answer Correct Answer: D) Chemical change. 28. If an atom contains 4 protons, 4 neutrons, and 4 electrons. What is its mass number? A) 8. B) 2. C) 4. D) 16. Show Answer Correct Answer: A) 8. 29. Substances composed of two or more elements chemically combined in a fixed proportion. A) Compound. B) Vapor. C) Element. D) Mixture. Show Answer Correct Answer: A) Compound. 30. What is the correct name of the compound Mg(NO3)2? A) Magnesium nitride. B) Magnesium nitrate. C) Magnesium dinitrate. D) Monomagnesium dinitrate. Show Answer Correct Answer: B) Magnesium nitrate. 31. Propene is converted to propanone in a two stage process.Propene $\rightarrow$ X $\rightarrow$ PropanoneWhat is the formula of compound X? A) CH3CHBrCH3. B) CH3CHOHCH3. C) CH3CH2CH2OH. D) CH3CH2CH2Br. Show Answer Correct Answer: B) CH3CHOHCH3. 32. What is the molar mass of sodium? A) 22.990. B) 3. C) 45.98. D) 11. Show Answer Correct Answer: A) 22.990. 33. The valency of Chlorine in AlCl3 is A) 1. B) 3. C) 2. D) None of above. Show Answer Correct Answer: A) 1. 34. An electrophile is a Lewis ..... A) Base. B) Acid. C) Anion. D) Radical. Show Answer Correct Answer: B) Acid. 35. Bases, like soap, are ..... A) Carbon. B) Non-electrical. C) Slippery. D) Sour. Show Answer Correct Answer: C) Slippery. 36. The activation energy needed for a chemical reaction is decreased by a A) Product. B) Reactant. C) Catalyst. D) Substrate. Show Answer Correct Answer: C) Catalyst. 37. What is the value of x $ Cl^{-1}X$ A) 4. B) 0. C) 100000000000000000000000000. D) 1. Show Answer Correct Answer: D) 1. 38. An element is made up of only one kind of ..... A) Metal. B) Plastic. C) Atom. D) Isotope. Show Answer Correct Answer: C) Atom. 39. What is the difference between ionic and covalent bonding? A) Only ionic bonds can be polar. B) Only ionic bonds can make double bonds. C) Covalent bonds share electrons, ionic bonds transfer electrons. D) Ionic bonds share electrons, covalent bonds transfer electrons. Show Answer Correct Answer: C) Covalent bonds share electrons, ionic bonds transfer electrons. 40. Pure oxygen (O) is an example of ..... A) An element. B) A mixture. C) A compound. D) None of above. Show Answer Correct Answer: A) An element. 41. The rule that refers to polar molecules dissolving polar and nonpolar dissolving nonpolar is A) This dissolves that. B) Like dissolves like. C) Same dissolves same. D) Here dissolves there. Show Answer Correct Answer: B) Like dissolves like. 42. Subatomic particle that determines the identity of the atom A) Proton. B) Nucleus. C) Electron. D) Neutron. Show Answer Correct Answer: A) Proton. 43. A(n) ..... increases the reaction rate by lowering the activation energy needed. A) Activation energy. B) Chemical changes. C) Catalyst. D) Energy. E) Decomposition. Show Answer Correct Answer: C) Catalyst. 44. Water is a universal solvent because it ..... A) Floats when frozen. B) Dissolves most substances. C) It can be found anywhere. D) It freezes when it gets cold. Show Answer Correct Answer: B) Dissolves most substances. 45. The four main types of carbon-based molecules in organisms are carbohydrates, lipids, nucleic acids, and A) Starches. B) Monosaccharides. C) Fatty acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 46. The number of atoms, ions or molecules that a central atom or ion holds as its nearest neighbors in a complex or a coordination compound or in a crystal. A) Coordination number. B) Ligancy. C) Coordination. D) None of above. Show Answer Correct Answer: A) Coordination number. 47. What is the correct name for the following compound? HClO3 A) Hypochlorite. B) Hydrogen trichlorate. C) Chloric acid. D) Hydrogen chloroxide. Show Answer Correct Answer: C) Chloric acid. 48. What is the most dense metal? A) Nylon1.2 g/cm3. B) Aluminum 2.7 g/cm3. C) Steel7.14 g/cm3. D) Copper 8.14 g/cm3. Show Answer Correct Answer: D) Copper 8.14 g/cm3. 49. Identifies an unknown through by calculating its composition. A) Analytical. B) Organic. C) Biochemistry. D) Physical. Show Answer Correct Answer: A) Analytical. 50. What term describes a solid changing to a liquid? A) Melting. B) Deposition. C) Freezing. D) Sublimation. Show Answer Correct Answer: A) Melting. 51. What are the raw materials for the Haber process? A) Hydrogen and Oxygen. B) Hydrogen and Nitrogen. C) Water and Nitrogen. D) Oxygen and Nitrogen. Show Answer Correct Answer: B) Hydrogen and Nitrogen. 52. The branch of chemistry that would Identify an unknown material by determining its chemical composition or make-up. A) Organic. B) Analytical. C) Biochemistry. D) Physical. Show Answer Correct Answer: B) Analytical. 53. How many structural isomers exist with the formula C3H5Cl3? A) 5. B) 6. C) 4. D) 3. Show Answer Correct Answer: A) 5. 54. The attraction between two molecules DIFFERENT substances is called ..... A) Cohesion. B) Capillary action. C) Surface tension. D) Adhesion. Show Answer Correct Answer: D) Adhesion. 55. All elements in the same vertical column are referred to as: A) Column. B) Family. C) Group. D) All of the above. Show Answer Correct Answer: D) All of the above. 56. In the chemical name copper (II) sulphate the roman numeral is used to show A) The period the element belonged in. B) How the ion is used. C) The group the element belonged in. D) Which ion is used. Show Answer Correct Answer: D) Which ion is used. 57. Combination of 2 or more or more substances blended together without a chemical reaction. A) Compund. B) Atom. C) Density. D) Mixture. Show Answer Correct Answer: D) Mixture. 58. Type of matter that is made from 2 or more different types of atoms that are chemically combined. A) Heterogeneous mixture. B) Homogeneous mixture. C) Element. D) Compound. Show Answer Correct Answer: D) Compound. 59. ..... chemistry is directed to a practical goal or application. A) Physical chemistry. B) Pure chemistry. C) Analytical chemistry. D) Applied chemistry. Show Answer Correct Answer: D) Applied chemistry. 60. He was the Greek philosopher who added the fifth fundamental element-ether / aether. A) Democritus. B) Aristotle. C) Empedocles. D) Epicurus. Show Answer Correct Answer: B) Aristotle. ← PreviousNext →Related QuizzesChemistry QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books