This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Chemistry > Chemistry – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a valence electron? A) An electron that is found in the outermost orbital of an atom. B) An electron found in the innermost orbital of an atom. C) An electron found in the middle orbital. D) None of above. Show Answer Correct Answer: A) An electron that is found in the outermost orbital of an atom. 2. Given the reaction:H2SO4 + 2LiOH yields Li2SO4 + 2HOHWhich compound is a salt? A) HOH. B) Li2SO4. C) H2SO4. D) LiOH. Show Answer Correct Answer: B) Li2SO4. 3. What explains the very high melting and boiling point of water A) Strong dipole-dipole bonds between water molecules. B) Strong hydrogen bonds between water molecules. C) Dispersion forces which are present in all molecules. D) Asymmetrical shape of the polar bonds. Show Answer Correct Answer: B) Strong hydrogen bonds between water molecules. 4. Which biomolecule is made of nucleotides and contain you DNA? A) Protein. B) Lipids. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: C) Nucleic Acid. 5. Sulfur hexafluoride is an example of a ..... A) Monatomic ion. B) Binary compound. C) Polyatomic compound. D) Polyatomic ion. Show Answer Correct Answer: B) Binary compound. 6. Which has more molecules? This is a trick question! A) 2 mole NaCl. B) 3 mole NaF. C) 1 mole Cl2. D) They're are all the same. Show Answer Correct Answer: C) 1 mole Cl2. 7. Which of the following is found in the nucleus of an atom? A) Electrons. B) Neutrons. C) The center of an atom, composed of protons and neutrons. D) Molecules. Show Answer Correct Answer: C) The center of an atom, composed of protons and neutrons. 8. It refers to the ability to shine and to reflect light. A) Malleability. B) Ductility. C) Conductors of heat. D) Luster. Show Answer Correct Answer: D) Luster. 9. Balance the following: ..... H2SO4 + ..... NaNO2 $\rightarrow$ ..... HNO2 + ..... Na2SO4 A) 1, 2, 2, 1. B) 2, 3, 3, 2. C) 4, 3, 2, 1. D) 1, 1, 2, 1. Show Answer Correct Answer: A) 1, 2, 2, 1. 10. Which of the following gases is the most toxic? A) Acetic acid. B) Carbon monoxide. C) Sulphur dioxide. D) Carbon dioxide. Show Answer Correct Answer: B) Carbon monoxide. 11. What is the charge of a proton? A) Positive. B) Depends on the size. C) Neutral. D) Depends on the location. Show Answer Correct Answer: A) Positive. 12. Which statement about the alkali metals is correct A) Located on the left most column of the periodic table. B) Extremely nonreactive. C) Usually gases. D) Form negative ions. Show Answer Correct Answer: A) Located on the left most column of the periodic table. 13. Which of the following is not a carbon compound? A) Nucleic Acids. B) Lipids. C) Carbohydrates. D) Vitamins. Show Answer Correct Answer: D) Vitamins. 14. Adenosine triphosphate; gives energy to cells A) ATP. B) Sugar. C) Enzymes. D) Fats. Show Answer Correct Answer: A) ATP. 15. In which 0.01M solution is phenolphthalein pink? )) A) H2CO3 (aq). B) HCl (aq). C) KOH (aq). D) CH3COOH (aq). Show Answer Correct Answer: C) KOH (aq). 16. How many bananas in 3.5 moles of bananas? A) 3.5. B) 3.5 x 6.02 x 1023. C) 35 / 6.02 x 1023. D) None of above. Show Answer Correct Answer: B) 3.5 x 6.02 x 1023. 17. The major macromolecules of life are A) Lipids, proteins, carbohydrates, nucleic acids. B) Nucleic acid and water. C) Lipids and fats. D) DNA. Show Answer Correct Answer: A) Lipids, proteins, carbohydrates, nucleic acids. 18. Which of the following is a decomposition reaction? A) MgCo3 $\rightarrow$ MgO + CO2. B) SO3 + H2O $\rightarrow$ H2SO4. C) 2 Mg + O2 $\rightarrow$ 2MgO. D) None of above. Show Answer Correct Answer: A) MgCo3 $\rightarrow$ MgO + CO2. 19. The universal solvent A) Nitrogen. B) Salt water. C) Water. D) Oxygen. Show Answer Correct Answer: C) Water. 20. What are polar covalent bonds? A) Electrons are shared equally. B) Electrons are shared unequally. C) Electrons are transferred. D) None of above. Show Answer Correct Answer: B) Electrons are shared unequally. 21. Element X is a solid that is brittle, lacks luster, and has six valence electrons. In which group on the Periodic Table would element X be found. A) 1. B) 16. C) 15. D) 2. Show Answer Correct Answer: B) 16. 22. In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction? A) Energy is absorbed in the reaction. B) Energy is released in the reaction. C) There is no transfer of energy in the reaction. D) None of above. Show Answer Correct Answer: B) Energy is released in the reaction. 23. What term is given to a reaction which transfers heat energy from the surroundings, to the system? A) Activation energy. B) Exothermic. C) Reversible. D) Endothermic. Show Answer Correct Answer: D) Endothermic. 24. Steroids are a type of ..... A) Protein. B) Cholesterol. C) Nucleic Acid. D) Lipid. Show Answer Correct Answer: D) Lipid. 25. ..... refer to the body of knowledge. A) Science. B) Composition. C) Consumer products. D) Cost. Show Answer Correct Answer: A) Science. 26. A type of bond that gives 3-dimensional shapes to molecules like DNA A) Hydrogen. B) Ionic. C) Covalent. D) None of above. Show Answer Correct Answer: A) Hydrogen. 27. It is the properties that do not depend on the amount of the substance of the materials A) Intensive properties. B) Physical properties. C) Extensive properties. D) Chemical properties. Show Answer Correct Answer: C) Extensive properties. 28. For the Balanced Reaction:3 Mg + 1 Fe2O3 $\rightarrow$ 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe? A) 3 mol MgO / 2 mol Fe. B) 1 mol Fe/ 2 mol Fe. C) 2 mol Mg/ 3 mol Fe. D) 3mol Mg / 2 mol Fe. Show Answer Correct Answer: A) 3 mol MgO / 2 mol Fe. 29. Which is also called Stranger Gas? A) Argon. B) Neon. C) Xenon. D) Nitrous oxide. Show Answer Correct Answer: C) Xenon. 30. An atom of iodine has 7 valence electrons. What will an atom of iodine MOST likely do to be stable? A) Neither gain nor lose any valence electrons. B) Gain 1 electron. C) Lose 1 electron. D) Lost 7 electrons. Show Answer Correct Answer: B) Gain 1 electron. 31. The ore which is found in abundance in India is A) Fluorspar. B) Magnetite. C) Monazite. D) Bauxite. Show Answer Correct Answer: C) Monazite. 32. Bonds between atoms in a molecule form as a result of the sharing of? A) Chemicals. B) Formulas. C) Atoms. D) Electrons. Show Answer Correct Answer: D) Electrons. 33. Which biomolecule helps form muscles? A) Protein. B) Lipids. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: A) Protein. 34. Building blocks of proteins A) Monosaccharides. B) Glycerol and fatty acids. C) Neucleotides. D) Amino acids. Show Answer Correct Answer: D) Amino acids. 35. A sub-atomic particle that has a positive charge and that is found in the nucleus of an atom A) Protons. B) Neutrons. C) Ions. D) Electrons. Show Answer Correct Answer: A) Protons. 36. The octane number of zero is assigned to A) Iso-octane. B) 2-methyl octane. C) 3-methyl octane. D) N-heptane. Show Answer Correct Answer: D) N-heptane. 37. Hydrogen and carbon form A) Hydrogen bonds. B) Nonpolar covalent bonds. C) Polar covalent bonds. D) Ionic bonds. Show Answer Correct Answer: B) Nonpolar covalent bonds. 38. Calcium carbonate or calcite consists of ..... A) Calcium, carbon, hydrogen. B) Calcium, oxygen, hydrogen. C) Calcium, carbon, oxygen. D) None of above. Show Answer Correct Answer: C) Calcium, carbon, oxygen. 39. Vertical columns of elements that have similar chemical and physical properties due to their outermost electrons A) Symbols. B) Periods. C) Groups. D) Shells. Show Answer Correct Answer: C) Groups. 40. What is an electron cloud? A) The center of an atom. B) The location of electrons circling the nucleus of an atom. C) A gathering of people who want to vote. D) Water vapor in the sky that drops rain onto the earth. Show Answer Correct Answer: B) The location of electrons circling the nucleus of an atom. 41. Which biomolecule includes fats, such as triglycerides, oils, waxes, and steroids (cholesterol); insoluble in water; provides energy storage, insulation, part of cell membrane, and hormones A) Carbohydrate. B) Nucleic Acid. C) Protein. D) Lipids. Show Answer Correct Answer: D) Lipids. 42. Which is the strongest interaction? A) Ionic bonds. B) Hydrogen bonds. C) Covalent bonds. D) Van der Waals forces. Show Answer Correct Answer: C) Covalent bonds. 43. Sharing electrons happens during A) The formation of ions. B) Ionic bonding. C) Covalent bonding. D) Metallic bonding. Show Answer Correct Answer: C) Covalent bonding. 44. What are the number of moles of CO2 which contains 16 g of oxygen? A) 0.2 mole. B) 0.4 mole. C) 0.5 mole. D) 0.25 mole. Show Answer Correct Answer: C) 0.5 mole. 45. What is the chemical name of table salt? A) Sodium nitrate. B) Sodium chloride. C) Calcium chloride. D) Ammonium chloride. Show Answer Correct Answer: B) Sodium chloride. 46. What is the hardest form of carbon? A) Charcoal. B) Graphite. C) Diamond. D) Coke. Show Answer Correct Answer: C) Diamond. 47. How many moles of silver atoms are in 1.8 X 1020 atoms of silver? A) 3.0 X 102. B) 3.3 X 10-3. C) 1.1 X 1044. D) 3.0 X 10-4. Show Answer Correct Answer: D) 3.0 X 10-4. 48. How many moles are 2.85 x 1018 atoms of iron? A) 1.72 x 1042 moles. B) 1.72 x 10-42 moles. C) 4.73 x 106 moles. D) 4.73 x 10-6 moles. Show Answer Correct Answer: D) 4.73 x 10-6 moles. 49. Hydrogen and nitrogen form A) Ionic bonds. B) Polar covalent bonds. C) Nonpolar covalent bonds. D) None of above. Show Answer Correct Answer: B) Polar covalent bonds. 50. What is two or more atoms held together by chemical bonds? A) Adenosine triphosphate (ATP). B) Molecule. C) Carbon. D) Compound. Show Answer Correct Answer: B) Molecule. 51. If an atom has 3 electrons, how many protons does it have? A) 3. B) 4. C) 1. D) 2. Show Answer Correct Answer: A) 3. 52. What electron configuration matches an oxygen ion? A) 1s22s22p63s23p64s23d1. B) 1s22s22p6. C) 1s22s22p63s2, 3p64s23d104p5. D) 1s22s22p4. Show Answer Correct Answer: B) 1s22s22p6. 53. What electron configuration matches an oxygen atom? A) 1s22s22p63s23p64s23d1. B) 1s22s22p63s2, 3p64s23d104p5. C) 1s22s22p4. D) 1s22s22p6. Show Answer Correct Answer: C) 1s22s22p4. 54. Elements in Group 18 do not normally form chemical bonds because ..... A) They are not found on the Earth. B) They do not have any valence electrons. C) They have a complete set of valence electrons. D) They are all gases. Show Answer Correct Answer: C) They have a complete set of valence electrons. 55. What are the four biological molecules? A) Proteins, carbohydrates, lipids, nucleic acids. B) A, T, C, G. C) Water, air, earth, and fire. D) Joe, Nick, and Kevin Jonas. Show Answer Correct Answer: A) Proteins, carbohydrates, lipids, nucleic acids. 56. The atomic number of an element is equal to the number of A) Protons and electrons. B) Protons. C) Electrons. D) Electrons and neutrons. Show Answer Correct Answer: A) Protons and electrons. 57. What is the country that contains 7, 641 island? A) Japan. B) Thailand. C) Malaysia. D) Philippines. Show Answer Correct Answer: D) Philippines. 58. What element is located in group 13, period 5 A) Cd. B) In. C) Sn. D) Ti. Show Answer Correct Answer: B) In. 59. Which type of intermolecular force may be present between amine molecules? i. hydrogen bondii. Van der Waalsiii. covalent A) I only. B) I and ii only. C) I and iii only. D) I, ii and iii. Show Answer Correct Answer: B) I and ii only. 60. Bonus Question:What color is blood inside your body? A) Blue. B) Red. C) Pink. D) Black. Show Answer Correct Answer: A) Blue. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books