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Comprehensive General Chemistry MCQ

1. What is the solubility product constant?

Answer

Correct Answer: The equilibrium constant for the solubility equilibrium of a slightly soluble (or nearly insoluble) ionic compound

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2. What is the equilibrium constant for the solubility equilibrium of a slightly soluble (or nearly insoluble) ionic compound?

Answer

Correct Answer: Solubility product constant (Ksp)

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3. What is solubility?

Answer

Correct Answer: The amount of a substance that dissolves in a given quantity of solvent to give a saturated solution.

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4. What is a solid characterized by?

Answer

Correct Answer: Rigidity

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5. What is Sol?

Answer

Correct Answer: A colloid that consists of solid particles dispersed in a liquid.

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6. What is a single bond?

Answer

Correct Answer: A covalent bond in which a single pair of electrons is shared by two atoms.

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7. What is a simple cubic unit cell?

Answer

Correct Answer: A cubic unit cell in which lattice points are situated only at the corners of the unit cell

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8. What is the main element in silicone?

Answer

Correct Answer: Silicon

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9. What is Silicate?

Answer

Correct Answer: A compound of silicon and oxygen

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10. What is the name of the solid SiO2?

Answer

Correct Answer: Silica

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11. What is the chemical formula for Silica?

Answer

Correct Answer: SiO2

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12. What is the final digit in a measured number having some uncertainty called?

Answer

Correct Answer: Significant figures

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13. What are significant figures?

Answer

Correct Answer: Those digits in a measured number that include all certain digits plus a final digit having some uncertainty

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14. What is the shape of a Sigma (s) bond?

Answer

Correct Answer: Cylindrical

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15. What is the meaning of SI prefix?

Answer

Correct Answer: A prefix used in the International System to indicate a power of 10

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16. SI prefix is a prefix used to indicate what?

Answer

Correct Answer: A power of 10

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17. What does SI stand for?

Answer

Correct Answer: Système International d'Unités

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18. For which particles does the shell model of the nucleus provide a description?

Answer

Correct Answer: Protons and neutrons

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19. What is self-ionization?

Answer

Correct Answer: A reaction in which two like molecules react to give ions

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20. Seesaw geometry is a type of _______

Answer

Correct Answer: Molecular Geometry

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21. What is the second law of thermodynamics?

Answer

Correct Answer: The total entropy of a system and its surroundings always increases for a spontaneous process.

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22. What does a scintillation counter do?

Answer

Correct Answer: It detects nuclear radiations from flashes of light generated in a material by the radiation

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23. What is a scintillation counter?

Answer

Correct Answer: A device that detects nuclear radiations from flashes of light generated in a material by the radiation

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24. What is the form of scientific notation?

Answer

Correct Answer: A x 10n

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25. What is the general process of advancing scientific knowledge through observation, the framing of laws, hypotheses, or theories, and the conducting of more experiments?

Answer

Correct Answer: Scientific method

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26. The scientific method is a process for _____.

Answer

Correct Answer: Advancing scientific knowledge

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27. What is a saturated solution?

Answer

Correct Answer: A solution that is in equilibrium with respect to a given dissolved substance

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28. What is a saturated hydrocarbon?

Answer

Correct Answer: A hydrocarbon that has only single bonds between carbon atoms

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29. What is the purpose of a salt bridge in a voltaic cell?

Answer

Correct Answer: To allow the flow of ions

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30. What does a salt bridge do in a voltaic cell?

Answer

Correct Answer: It allows the flow of ions but prevents the mixing of the different solutions

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31. What is salt?

Answer

Correct Answer: A product of a neutralization reaction

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32. What does the unit 'rem' equal to?

Answer

Correct Answer: Rems = rads x RBE

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33. What is the unit of radiation dosage that equals the rad times a factor for the type of radiation?

Answer

Correct Answer: Rem

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34. What is the decrease of oxidation number of an atom called?

Answer

Correct Answer: Reduction

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35. What is a reducing agent?

Answer

Correct Answer: A species that reduces another species

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36. What is the unit of measurement for the reaction rate?

Answer

Correct Answer: Molar concentration

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37. What is the expression for reaction quotient?

Answer

Correct Answer: Qc = [ products ] / [ reactants ]

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38. What is the correct form of the Reaction Quotient expression?

Answer

Correct Answer: Qc = [products]/[reactants]

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39. What is the reaction order of the exponent of the concentration of a given reactant species in the rate law?

Answer

Correct Answer: As determined experimentally

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40. What is the reaction order with respect to the concentration of a given reactant species?

Answer

Correct Answer: The exponent of the concentration of a given reactant species in the rate law, as determined experimentally.

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41. What is a reaction mechanism?

Answer

Correct Answer: The set of elementary reactions whose overall effect is given by the net chemical equation

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42. What is the net effect of a reaction mechanism?

Answer

Correct Answer: Overall effect is given by the net chemical equation

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43. What is a reactant?

Answer

Correct Answer: A starting substance in a chemical reaction.

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44. What is the rate-determining step?

Answer

Correct Answer: The slowest step in a reaction mechanism

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45. What does RDS stand for?

Answer

Correct Answer: Rate-determining step

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46. What is a rate law?

Answer

Correct Answer: An equation relating the rate of a reaction to the concentrations of reactants.

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47. What is the rate constant?

Answer

Correct Answer: Proportionality constant in the relationship between rate and concentrations

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48. What is the value of PA when XA = 0.5?

Answer

Correct Answer: P°AXA/2

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49. What is radioactivity?

Answer

Correct Answer: Spontaneous radiation from unstable elements

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50. What is the purpose of a radioactive tracer?

Answer

Correct Answer: To facilitate study of a chemical, biological, or physical system

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51. What is the end product of a radioactive decay series?

Answer

Correct Answer: A stable, non-radioactive nucleus

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52. What is the radioactive decay constant?

Answer

Correct Answer: The rate constant for radioactive decay

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53. What is the process in which a nucleus spontaneously disintegrates, giving off radiation?

Answer

Correct Answer: Radioactive Decay

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54. How much energy does 1 x 10-2 J of radiation deposit per kilogram of tissue?

Answer

Correct Answer: Rad the dosage of radiation that deposits 1 x 10-2 J of energy per kilogram of tissue

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55. What is a racemic mixture?

Answer

Correct Answer: A mixture of equal amounts of optical isomers

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56. What is the branch of physics that mathematically describes the wave properties of submicroscopic particles?

Answer

Correct Answer: Quantum (wave) mechanics

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57. What is quantitative analysis?

Answer

Correct Answer: The determination of the amount of a substance or species present in a material

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58. Quantitative analysis is the determination of what in a material?

Answer

Correct Answer: The amount of a substance or species present

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59. What is qualitative analysis?

Answer

Correct Answer: The determination of the identity of substances present in a mixture

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60. What is a polyatomic ion?

Answer

Correct Answer: An ion consisting of two or more atoms chemically bonded together and carrying a net electric charge

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61. What is polyamide a polymer formed by?

Answer

Correct Answer: Reacting a substance containing two amine groups with a substance containing two carboxylic acid groups

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62. What is a polar covalent bond?

Answer

Correct Answer: A covalent bond in which the bonding electrons spend more time near one atom than near the other

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63. What is Plasma?

Answer

Correct Answer: Electrically neutral gas of ions and electrons

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64. What is the value of Planck's constant?

Answer

Correct Answer: 6.63 x 10-34 J·s

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65. What is a Pi (p) bond?

Answer

Correct Answer: A bond that has an electron distribution above and below the bond axis

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66. What is the name of the bond that has an electron distribution above and below the bond axis?

Answer

Correct Answer: Pi Bond

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67. What is a physical property?

Answer

Correct Answer: A characteristic that can be observed for a material without changing its chemical identity

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68. What is a physical change?

Answer

Correct Answer: A change in the form of matter but not in its chemical identity

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69. What is physical adsorption?

Answer

Correct Answer: Adsorption in which the attraction is provided by weak intermolecular forces.

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70. What is the proportionality constant in the equation for photon energy?

Answer

Correct Answer: H

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71. What is the unit of Planck's constant?

Answer

Correct Answer: Joule-seconds

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72. What is the Photoelectric effect?

Answer

Correct Answer: The ejection of electrons from the surface of a metal or other material when light shines on it.

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73. What is a phospholipid bilayer?

Answer

Correct Answer: A part of a biological membrane consisting of two layers of phospholipid molecules

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74. What is the difference between Phospholipid and Micelles?

Answer

Correct Answer: Phospholipid has a phosphate group whereas Micelles does not.

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75. Which of the following is true about phospholipids?

Answer

Correct Answer: They have hydrophobic and hydrophilic ends.

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76. What is a phase diagram?

Answer

Correct Answer: A graphical way to summarize the conditions under which the different states of a substance are stable.

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77. What is the first phase of homogeneous material present in the portion of matter under study?

Answer

Correct Answer: Phase One

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78. What is Phase one?

Answer

Correct Answer: A homogeneous material present in the portion of matter under study

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79. What is Peroxide?

Answer

Correct Answer: A compound with oxygen in the -1 oxidation state

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80. What is the oxidation state of oxygen in peroxide?

Answer

Correct Answer: -1

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81. In what form is the periodic table?

Answer

Correct Answer: Tabular

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82. In what form is the periodic table arranged?

Answer

Correct Answer: Rows and columns

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83. What is the periodic law?

Answer

Correct Answer: The physical and chemical properties of elements vary periodically when they are arranged by atomic number.

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84. What is a period in the periodic table?

Answer

Correct Answer: The elements in any one horizontal row of the periodic table

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85. What is the percentage yield?

Answer

Correct Answer: The actual yield (experimentally determined) expressed as a percentage of the theoretical yield (calculated)

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86. What is the term for the mass percentages of each element in a compound?

Answer

Correct Answer: Percentage composition

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87. What does percentage composition tell us?

Answer

Correct Answer: The mass percentages of each element in a compound

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88. Which type of bond is Peptide (amide) bond?

Answer

Correct Answer: C-N bond

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89. How many electrons can an orbital hold?

Answer

Correct Answer: Two

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90. What is the Pauli exclusion principle?

Answer

Correct Answer: No two electrons in an atom can have the same four quantum numbers.

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91. What is a particle accelerator?

Answer

Correct Answer: A device used to accelerate electrons, protons, and alpha particles and other ions to very high speeds

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92. What is partial pressure?

Answer

Correct Answer: The pressure exerted by a particular gas in a mixture

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93. What is a paramagnetic substance?

Answer

Correct Answer: A substance that is weakly attracted by a magnetic field

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94. What is the term for the energy required to put two electrons into the same orbital?

Answer

Correct Answer: Pairing energy

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95. What is Oxoacid?

Answer

Correct Answer: A substance in which O atoms are bonded to a central atom

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96. What is an acid containing hydrogen, oxygen, and another element called?

Answer

Correct Answer: Oxoacid

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97. What is an oxidizing agent?

Answer

Correct Answer: A species that oxidizes another species

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98. What is the oxidation state of oxygen in oxide?

Answer

Correct Answer: -2

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99. What is a redox reaction?

Answer

Correct Answer: A reaction in which electrons are transferred between species or in which atoms change oxidation number

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100. What is the oxidation potential?

Answer

Correct Answer: The negative of the standard electrode potential

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