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?
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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?
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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?
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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?
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22. What is the chemical formula for dihydrogen phosphate ion?
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23. Elements in the same column of the periodic table
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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?
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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?
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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?
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39. What is the unit of measurement for a gamma photon?
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40. What is the wavelength of gamma radiation?
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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?
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Correct Answer:
By subtracting the number of valence electrons from the number associated electrons
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47. What is a force?
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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?
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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?
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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?
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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?
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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?
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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?
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60. What is the atomic number of the element fermium?
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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?
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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?
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68. Which of the following is not a shape found in a Fullerene?
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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?
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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?
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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?
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79. What is the value of G when H = 0 and T = 0?
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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?
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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?
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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?
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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?
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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?
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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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