General Chemistry for Engineers MCQ

1. What is Henry's law?

Answer

Correct Answer: The solubility of a gas is directly proportional to the partial pressure of the gas above the solution

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2. Henderson-Hasselbalch equation is an equation relating pH of a buffer to what?

Answer

Correct Answer: Concentrations of conjugate acid and base

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3. What is the enthalpy of vaporization?

Answer

Correct Answer: The heat needed for the vaporization of a liquid

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4. What is heat of solution?

Answer

Correct Answer: The heat absorbed when an ionic substance dissolves in water.

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5. What is the definition of heat of solution?

Answer

Correct Answer: The heat absorbed (or evolved) when an ionic substance dissolves in water

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6. What equals the heat of reaction?

Answer

Correct Answer: The heat required to return the chemical system to a given temperature at the completion of the reaction.

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7. What is the heat of fusion?

Answer

Correct Answer: The heat needed for the melting of a solid

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8. Heat capacity is the quantity of heat needed to raise the temperature of a sample of substance by what amount?

Answer

Correct Answer: One degree Celsius (or one kelvin)

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9. What causes heat to flow into or out of a system?

Answer

Correct Answer: A difference in temperature between the thermodynamic system and its surroundings

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10. What is HCO3-?

Answer

Correct Answer: Hydrogen carbonate ion (or bicarbonate ion)

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11. What is the chemical name for Hydrogen carbonate ion?

Answer

Correct Answer: Bicarbonate ion

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12. What is the group name for the halogens?

Answer

Correct Answer: Group VIIA

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13. Which of the following is not a halogen?

Answer

Correct Answer: Argon

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14. What is the commercial method for producing aluminum?

Answer

Correct Answer: Hall–Héroult process

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15. What is one of two parts of an oxidation?reduction reaction?

Answer

Correct Answer: Half-reaction

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16. What is the other part of an oxidation?reduction reaction?

Answer

Correct Answer: It involves a gain of electrons.

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17. What is Half-life?

Answer

Correct Answer: The time it takes for one-half of the nuclei in a sample to decay

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18. What is a half-cell?

Answer

Correct Answer: The portion of an electrochemical cell in which a half-reaction takes place.

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19. Which of the following is a reactant in the Haber process?

Answer

Correct Answer: Nitrogen

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20. What is the Haber process?

Answer

Correct Answer: An industrial process for the preparation of ammonia from nitrogen and hydrogen

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21. What is the charge of the dihydrogen phosphate ion?

Answer

Correct Answer: -1

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22. What is the chemical formula for dihydrogen phosphate ion?

Answer

Correct Answer: H2PO4-

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23. Elements in the same column of the periodic table

Answer

Correct Answer: Have the same chemical properties

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24. What do the elements in any one column of the periodic table have in common?

Answer

Correct Answer: They all have the same number of valence electrons.

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25. What is the ground state?

Answer

Correct Answer: A quantum-mechanical state of an atom or molecule associated with the lowest energy level.

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26. Which of the following is NOT an excited state?

Answer

Correct Answer: Ground state

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27. What type of analysis is gravimetric analysis?

Answer

Correct Answer: Quantitative

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28. What is the Goldschmidt process?

Answer

Correct Answer: A method of preparing a metal by reduction of its oxide with powdered aluminum

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29. What is the correct term for proteins that fold into compact, roughly spherical shapes?

Answer

Correct Answer: Globular proteins

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30. What is the alternate name for Globular proteins?

Answer

Correct Answer: Spherical proteins

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31. What is glass electrode used for?

Answer

Correct Answer: To determine pH by cell potential measurements

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32. Geometric isomers differ from one another because

Answer

Correct Answer: Some atoms occupy different relative positions in space

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33. What is a gene?

Answer

Correct Answer: A sequence of nucleotides in a DNA molecule that codes for a given protein

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34. What does a Geiger counter count?

Answer

Correct Answer: Particles emitted by radioactive nuclei

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35. What is a Geiger counter used for?

Answer

Correct Answer: To count particles emitted by radioactive nuclei

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36. What is gas chromatography used for?

Answer

Correct Answer: Separating a gaseous mixture of vaporized substances

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37. What is gas?

Answer

Correct Answer: A form of matter that is an easily compressible fluid

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38. What is the wavelength of a gamma photon?

Answer

Correct Answer: 1 pm

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39. What is the unit of measurement for a gamma photon?

Answer

Correct Answer: Pm

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40. What is the wavelength of gamma radiation?

Answer

Correct Answer: 10-12 m

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41. What is a functional group?

Answer

Correct Answer: A reactive portion of a molecule that undergoes predictable reactions

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42. What is the process of fractional distillation?

Answer

Correct Answer: Process which separates components of a mixture according to their boiling points.

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43. What is fractional distillation?

Answer

Correct Answer: A process which separates components of a mixture according to their boiling points.

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44. What is the sum of the atomic weights of the atoms in a compound's empirical formula called?

Answer

Correct Answer: Formula mass or formula weight

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45. What is a formation reaction?

Answer

Correct Answer: Reaction in which one mole of a product is formed.

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46. How is the formal charge of an atom calculated?

Answer

Correct Answer: By subtracting the number of valence electrons from the number associated electrons

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47. What is a force?

Answer

Correct Answer: A push or pull on a mass, with both magnitude and direction (vector).

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48. What is foam?

Answer

Correct Answer: A substance containing gas bubbles trapped within a liquid or solid

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49. What is fluorescence?

Answer

Correct Answer: When an atom absorbs electromagnetic radiation and emits a photon when the electron falls to a lower energy state.

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50. What is a liquid?

Answer

Correct Answer: A fluid that flows under applied shear stress

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51. What is the definition of fluid?

Answer

Correct Answer: A substance that flows under applied shear stress, including liquids, gases, and plasma.

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52. What does the word "flammable" mean?

Answer

Correct Answer: Easily ignited or capable of sustained combustion

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53. What does it mean when a material is described as "flammable?"

Answer

Correct Answer: Easily ignited or capable of sustained combustion.

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54. Which of the following is not a valid color that can be observed in a flame test?

Answer

Correct Answer: Green

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55. What is a flame test used for?

Answer

Correct Answer: An analytical technique used to identify ions based on their emission spectrum in a flame.

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56. What is fission?

Answer

Correct Answer: The splitting of an atomic nucleus, which results in two or more lighter nuclei and a release of energy.

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57. What is the fire point?

Answer

Correct Answer: The lowest temperature a vapor will initiate and sustain combustion.

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58. What does the first law of thermodynamics state?

Answer

Correct Answer: The total energy of a system and its surroundings is a constant value

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59. What is the name for the element with atomic number 100?

Answer

Correct Answer: Fermium

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60. What is the atomic number of the element fermium?

Answer

Correct Answer: 100

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61. What does the term "feedstock" mean?

Answer

Correct Answer: Any unprocessed material used as a supply for a manufacturing process.

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62. What does the term 'feedstock' refer to?

Answer

Correct Answer: Any unprocessed material used as a supply for a manufacturing process

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63. What is a fatty acid?

Answer

Correct Answer: A carboxylic acid with a long hydrocarbon side chain.

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64. What are triesters of glycerol and fatty acids called?

Answer

Correct Answer: Fat

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65. What is the value of Faraday constant?

Answer

Correct Answer: 96485.33 C/mol

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66. What is a family?

Answer

Correct Answer: A group of elements that share similar properties.

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67. What is the value of l for an f orbital?

Answer

Correct Answer: 3

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68. Which of the following is not a shape found in a Fullerene?

Answer

Correct Answer: Triangle

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69. What is Fullerene?

Answer

Correct Answer: A family of molecules consisting of a closed cage of carbon atoms arranged in pentagons as well as hexagons

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70. What is the fissionable material in nuclear reactors?

Answer

Correct Answer: Fuel rods

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71. What is a fuel cell?

Answer

Correct Answer: A device that converts chemical energy into electricity by way of an electrochemical reaction

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72. What is the symbol for the frequency factor in the Arrhenius equation?

Answer

Correct Answer: A

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73. What is the frequency factor the symbol A in the Arrhenius equation?

Answer

Correct Answer: A constant

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74. What is the unit of time that is usually used to measure frequency?

Answer

Correct Answer: Second

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75. What does the Greek symbol "ν" represent in the definition of frequency?

Answer

Correct Answer: The number of wavelengths of a wave that pass a fixed point in one unit of time

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76. What is the freezing point of the pure solvent minus the freezing point of the solution called?

Answer

Correct Answer: Freezing-point depression

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77. What is the freezing point?

Answer

Correct Answer: The temperature at which a pure liquid changes to a crystalline solid, or freezes.

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78. What is the process of freezing the change of a liquid to the solid state called?

Answer

Correct Answer: Freezing

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79. What is the value of G when H = 0 and T = 0?

Answer

Correct Answer: -TS

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80. What is the equation for free energy?

Answer

Correct Answer: G = H - TS

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81. What is the fractional (isotopic) abundance?

Answer

Correct Answer: The fraction of the total number of atoms that is composed of a particular isotope.

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82. What is the equilibrium constant for the formation of a complex ion from the aqueous metal ion and the ligands called?

Answer

Correct Answer: Formation constant (stability constant)

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83. What determines the stability of a complex ion?

Answer

Correct Answer: The formation constant (Kf)

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84. If a lone pair of electrons on an atom is not shared with another atom, to which atom does the lone pair belong?

Answer

Correct Answer: The atom itself

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85. What is the First law of thermodynamics?

Answer

Correct Answer: ΔU = q + w

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86. What is the first ionization energy?

Answer

Correct Answer: The minimum energy needed to remove the highest-energy electron from a neutral atom in the gaseous state

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87. What are fibrous proteins?

Answer

Correct Answer: Proteins that form long coils or align themselves in parallel to form long, water-insoluble fibers

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88. What are f-Block transition elements?

Answer

Correct Answer: Elements with a partially filled f subshell in common oxidation states

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89. What is the name given to the elements with a partially filled f subshell in common oxidation states?

Answer

Correct Answer: F-Block transition elements

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90. What is the value of Faraday's constant?

Answer

Correct Answer: 9.6485 x 104C

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91. What type of unit cell is a face-centered cubic unit cell?

Answer

Correct Answer: Cubic

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92. Which of the following is not a characteristic of an atom's energy level?

Answer

Correct Answer: Energy levels have specific energy values.

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93. What is an endothermic process?

Answer

Correct Answer: A chemical reaction or physical change in which heat is absorbed.

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94. What are enantiomers?

Answer

Correct Answer: Optical isomers that are nonsuperimposable mirror images of one another

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95. What is emulsion?

Answer

Correct Answer: A colloid consisting of liquid droplets dispersed throughout another liquid

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96. What is the simplest formula of a substance known as?

Answer

Correct Answer: Empirical formula

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97. What is the empirical formula of a substance?

Answer

Correct Answer: The formula of a substance written with the smallest integer (whole-number) subscripts.

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98. What is an elementary reaction?

Answer

Correct Answer: A single molecular event, such as a collision of molecules, resulting in a reaction.

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99. What is an element?

Answer

Correct Answer: A substance that cannot be decomposed by any chemical reaction into simpler substances.

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100. Electronegativity is a measure of the ability of an atom to:

Answer

Correct Answer: Draw bonding electrons to itself

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