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General Chemistry MCQ

1. What is the oxidation number of an atom in a substance?

The valence electrons of an atom in a substance

The actual charge on an atom in a substance

The number of electrons gained or lost by an atom in a reaction

The charge an atom would have if it were an ion

Answer

Correct Answer: The actual charge on an atom in a substance

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2. What is the part of an oxidation-reduction reaction in which there is a loss of electrons by a species?

Reduction

Electron

Oxidation-reduction

Oxidation

Answer

Correct Answer: Oxidation

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3. What is oxidation?

The part of an oxidation?reduction reaction in which there is a gain of electrons by a species

The part of an oxidation?reduction reaction in which there is a loss of electrons by a species

A reaction in which there is a gain of oxygen by a species

A reaction in which there is a loss of oxygen by a species

Answer

Correct Answer: The part of an oxidation?reduction reaction in which there is a loss of electrons by a species

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4. Overall order of a reaction is what?

The sum of the orders of the reactant species in the rate law.

The sum of the orders of the product species in the rate law.

The sum of the exponents of the product species in the rate law.

The sum of the exponents of the reactant species in the rate law.

Answer

Correct Answer: The sum of the orders of the reactant species in the rate law.

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5. What is the Ostwald process?

An industrial preparation of nitrogen monoxide starting from the catalytic oxidation of ammonia to nitric oxide

A process for the industrial preparation of nitrogen monoxide

A process for the industrial preparation of nitrogen dioxide

A process for the industrial preparation of carbon monoxide

Answer

Correct Answer: An industrial preparation of nitrogen monoxide starting from the catalytic oxidation of ammonia to nitric oxide

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6. What is osmotic pressure?

The pressure that, when applied to the solution, just stops osmosis

The amount of pressure needed to stop osmosis from happening

The pressure needed to keep osmosis from happening

The pressure needed to start osmosis

Answer

Correct Answer: The pressure that, when applied to the solution, just stops osmosis

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7. What is the phenomenon of solvent flow through a semipermeable membrane to equalize the solute concentrations on both sides of the membrane called?

Active Transport

Facilitated Diffusion

Diffusion

Osmosis

Answer

Correct Answer: Osmosis

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8. Which of the following is NOT an organic compound?

Sucrose (C12H22O11)

Ethanol (C2H6O)

Methane (CH4)

Table salt (NaCl)

Answer

Correct Answer: Table salt (NaCl)

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9. What is Ore?

A rock or mineral from which a metal or nonmetal can be economically produced

A machine for Online shopping

A unit of currency

A device for measuring distance

Answer

Correct Answer: A rock or mineral from which a metal or nonmetal can be economically produced

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10. What is an orbital diagram?

A diagram to show how the orbitals of a sub-shell are occupied by electrons

A type of satellite dish

The path of an object around another object

A way to calculate an orbit's altitude

Answer

Correct Answer: A diagram to show how the orbitals of a sub-shell are occupied by electrons

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11. What does optically active mean?

Having the ability to rotate the plane of light waves, only as a pure substance

Having the ability to rotate the plane of light waves, only in solution

Not having the ability to rotate the plane of light waves, either as a pure substance or in solution

Having the ability to rotate the plane of light waves, either as a pure substance or in solution

Answer

Correct Answer: Having the ability to rotate the plane of light waves, either as a pure substance or in solution

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12. What are optical isomers?

Molecules that have the same chemical formula but different structures

Isomers that cannot be distinguished by optical means

Isomers that are nonsuperimposable mirror images of one another

Isomers that appear the same when viewed in a mirror

Answer

Correct Answer: Isomers that are nonsuperimposable mirror images of one another

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13. What is the octet rule?

The tendency of atoms in molecules to have eight electrons in their valence shells

The tendency of atoms in molecules to have sixteen electrons in their valence shells

The tendency of atoms in molecules to have four electrons in their valence shells

The tendency of atoms in molecules to have twelve electrons in their valence shells

Answer

Correct Answer: The tendency of atoms in molecules to have eight electrons in their valence shells

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14. What is the geometry of a molecule in which six atoms occupy the vertices of a regular octahedron?

Trigonal

Tetrahedral

Cubic

Octahedral

Answer

Correct Answer: Octahedral

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15. How many significant figures are in the value 0.0030?

Answer

Correct Answer: 4

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16. What does the symbol "Nuclide" represent?

The number of protons in an element

A group of atoms with the same number of protons

The number of electrons in an element

A symbol for a nuclide

Answer

Correct Answer: A symbol for a nuclide

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17. What is the name given to the symbol that represents a nuclide?

Atomic number

Mass number

Nuclide symbol

Atomic symbol

Answer

Correct Answer: Nuclide symbol

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18. What is a nuclide?

The central region of an atom

The number of protons in an atom

A particular atom characterized by a definite atomic number and mass number

An uncharged particle in an atom

Answer

Correct Answer: A particular atom characterized by a definite atomic number and mass number

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19. What is the atom's central core called?

Electron

Nucleus

Proton

Neutron

Answer

Correct Answer: Nucleus

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20. What is the nucleus of an atom?

The central core of an atom

The proton of an atom

The electron cloud of an atom

The center of the atom's nucleus

Answer

Correct Answer: The central core of an atom

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21. What are the building blocks of nucleic acids?

Lipids

Carbohydrates

Nucleotides

Proteins

Answer

Correct Answer: Nucleotides

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22. What are nucleotides?

The building blocks of DNA

The building blocks of nucleic acids

The building blocks of RNA

The building blocks of protein

Answer

Correct Answer: The building blocks of nucleic acids

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23. What are nucleic acids?

Fatty substances in living organisms

Unicellular organic compounds

Polynucleotides folded or coiled into specific three-dimensional shapes.

Proteins that contains nitrogen

Answer

Correct Answer: Polynucleotides folded or coiled into specific three-dimensional shapes.

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24. What is the end result of nuclear fusion?

More neutrons

A stabler, heavier nucleus

A lighter, less stable nucleus

Less energy

Answer

Correct Answer: A stabler, heavier nucleus

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25. In nuclear fusion, what is released?

Protons

Electrons

Energy

Neutrons

Answer

Correct Answer: Energy

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26. What is nuclear force?

A weak force of attraction between nucleons that acts only at very short distances

A strong force of attraction between nucleons that acts only at very short distances

A strong force of attraction between nucleons that acts only at very long distances

A strong force of attraction between nucleons that acts at all distances

Answer

Correct Answer: A strong force of attraction between nucleons that acts only at very short distances

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27. What is a nuclear fission reactor?

A device that uses nuclear fusion to generate electricity

A device that uses chemical reactions to generate electricity

A device that permits a controlled chain reaction of nuclear fissions

A device that uses nuclear fission to generate electricity

Answer

Correct Answer: A device that permits a controlled chain reaction of nuclear fissions

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28. What is nuclear fission?

The transmutation of one element to another

The examination of matter

A nuclear reaction in which a heavy nucleus splits into lighter nuclei and energy is released

A physical or chemical change that results in the formation of one or more new substances

Answer

Correct Answer: A nuclear reaction in which a heavy nucleus splits into lighter nuclei and energy is released

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29. What is a nuclear equation?

A mathematical equation

An equation used in physics

A chemical equation

A symbolic representation of a nuclear reaction

Answer

Correct Answer: A symbolic representation of a nuclear reaction

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30. What is nuclear bombardment reaction?

A nuclear reaction in which a nucleus is bombarded, or struck, by a proton

A nuclear reaction in which a nucleus is bombarded, or struck, by an electron

A nuclear reaction in which a nucleus is bombarded, or struck, by a neutron

A nuclear reaction in which a nucleus is bombarded, or struck, by another nucleus or by a nuclear particle

Answer

Correct Answer: A nuclear reaction in which a nucleus is bombarded, or struck, by another nucleus or by a nuclear particle

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31. What is a nonstoichiometric compound?

A compound that is not considered to be a pure compound

A compound whose composition varies from its idealized formula

A compound that is not a stable compound

A compound that is not capable of reactions

Answer

Correct Answer: A compound whose composition varies from its idealized formula

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32. What is a nonmetal?

A non-reactive element

An element that does not exhibit the characteristics of a metal

An element that exhibits the characteristics of a metal

A radioactive element

Answer

Correct Answer: An element that does not exhibit the characteristics of a metal

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33. What is a nonelectrolyte?

A substance that is insoluble in water

A substance that is not soluble in water

A substance that does not conduct electricity

A substance that conducts electricity

Answer

Correct Answer: A substance that does not conduct electricity

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34. What is a noble-gas core?

A configuration of noble gases

A core made of a noble gas

An outer-shell configuration corresponding to one of the noble gases

An inner-shell configuration corresponding to one of the noble gases

Answer

Correct Answer: An inner-shell configuration corresponding to one of the noble gases

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35. What is the Group name given to Noble gases?

Group VIII

Group IB

Group VIA

Group VIIIA

Answer

Correct Answer: Group VIIIA

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36. Which is not a noble gas?

Uncombined atoms

Krypton

Helium

Argon

Answer

Correct Answer: Uncombined atoms

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37. What do nitrogen-fixing bacteria do?

Produce nitrogen in the soil from nitrogen in the atmosphere

Produce nitrogen compounds in the soil from atmospheric nitrogen

Fix nitrogen in the soil from atmospheric nitrogen

Fix nitrogen in the soil from nitrogen in the atmosphere

Answer

Correct Answer: Fix nitrogen in the soil from atmospheric nitrogen

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38. What is the process that nitrogen-fixing bacteria can use to produce nitrogen compounds from atmospheric nitrogen?

Nitrogen fixation

Combustion

Decomposition

Photosynthesis

Answer

Correct Answer: Nitrogen fixation

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39. What is the process of nitrogen being converted into a form that can be used by plants called?

Nitrogen release

Nitrogen pollution

Nitrogen fixation

Nitrogen gas

Answer

Correct Answer: Nitrogen fixation

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40. What is the anode of a Nickel-cadmium cell?

Cadmium

Nickel

Potassium hydroxide

Hydrated nickel oxide

Answer

Correct Answer: Cadmium

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41. What is the approximate composition of the cathode in a nickel-cadmium cell?

NiOOH

NiCo

CdO

Answer

Correct Answer: NiOOH

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42. Neutron activation analysis is an analysis of what?

Blood type in a sample

The weight of a sample

Number of neutrons in a sample

Elements in a sample

Answer

Correct Answer: Elements in a sample

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43. What is the mass of a neutron?

One-quarter the mass of a proton

Almost identical to that of a proton

Half the mass of a proton

Double the mass of a proton

Answer

Correct Answer: Almost identical to that of a proton

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44. What is the electric charge of a neutron?

Negative electric charge

Zero electric charge

Positive electric charge

No electric charge

Answer

Correct Answer: No electric charge

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45. What is the product of a neutralization reaction?

An ionic compound

An acidic solution

A covalent compound

A basic solution

Answer

Correct Answer: An ionic compound

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46. What is the result of a neutralization reaction?

An covalent compound and possibly water

An acidic solution

An electrolyte and possibly water

An ionic compound and possibly water

Answer

Correct Answer: An ionic compound and possibly water

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47. What is a net ionic equation?

An ionic equation from which spectator ions have been canceled.

An equation that shows the changes that happen during a chemical reaction.

A description of the physical and chemical properties of a substance.

A balanced chemical equation.

Answer

Correct Answer: An ionic equation from which spectator ions have been canceled.

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48. What is the simplest type of sugar?

Polysaccharides

Oligosaccharides

Monosaccharides

Disaccharides

Answer

Correct Answer: Monosaccharides

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49. Which group is not found in Monosaccharides?

Ketone

Alcohol

Carbonyl

Methyl

Answer

Correct Answer: Carbonyl

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50. What is a monoprotic acid?

An acid that yields one acidic hydrogen per molecule

An acid that yields no acidic hydrogen per molecule

A base that yields one acidic hydrogen per molecule

An acid that yields two acidic hydrogen per molecule

Answer

Correct Answer: An acid that yields one acidic hydrogen per molecule

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51. What is a monomer?

The repeating unit of a polymer

A compound used to make a polymer

A polymer made from monomers

A molecule that contains a carbon-carbon double bond

Answer

Correct Answer: A compound used to make a polymer

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52. What does monomer mean?

Small molecules that are linked together to form a polymer

Molecules that are not linked together to form a polymer

Large molecules that are linked together to form a polymer

Molecules that are linked together to form a monomer

Answer

Correct Answer: Small molecules that are linked together to form a polymer

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53. What are Monomers?

The study of ancient human bones.

A large landmass that is smaller than a continent.

A type of rock made from a single mineral.

Small molecules that are linked together to form a polymer.

Answer

Correct Answer: Small molecules that are linked together to form a polymer.

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54. What is a monodentate ligand?

A ligand that bonds to a metal atom through one atom of the ligand

A molecule with one or more unpaired electrons

An atom bonded to a metal through one lone electron pair

A polyatomic ion that contains a central metal atom bonded to one or more other atoms

Answer

Correct Answer: A ligand that bonds to a metal atom through one atom of the ligand

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55. What is a monatomic ion?

A cation

An ion formed from two atoms

A molecule

An ion formed from a single atom

Answer

Correct Answer: An ion formed from a single atom

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56. What is a molecule?

A definite group of atoms that are chemically bonded together.

A compound

The smallest particle of an element that has the chemical properties of that element.

An atom

Answer

Correct Answer: A definite group of atoms that are chemically bonded together.

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57. What is the definition of molecularity?

The number of moles of a substance

The number of molecules in a given space

The number of molecules on the reactant side of an elementary reaction

The number of molecules in a given mass

Answer

Correct Answer: The number of molecules on the reactant side of an elementary reaction

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58. What is a molecular substance?

A substance that is composed of atoms.

A substance that has a molecular structure.

A substance that is composed of molecules, all of which are alike.

A substance that is made up of molecules that are not all alike.

Answer

Correct Answer: A substance that is composed of molecules, all of which are alike.

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59. What is a molecular solid?

A unit of pressure

A solid that consists of atoms or molecules held together by intermolecular forces

A type of gas

A mineral

Answer

Correct Answer: A solid that consists of atoms or molecules held together by intermolecular forces

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60. What is the electronic structure of molecules in terms of molecular orbitals called?

Molecular orbital theory

Valence bond theory

Dipole-dipole interactions

Hydrogen bonding

Answer

Correct Answer: Molecular orbital theory

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61. What does MM stand for in terms of chemistry?

Medium mass

Minimum mass

Molecular mass

Maximum mass

Answer

Correct Answer: Molecular mass

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62. What determines the molecular geometry of a molecule?

The relative positions of the atomic nuclei

The number of atoms in the molecule

The size of the molecule

The molecular geometry of the atoms

Answer

Correct Answer: The relative positions of the atomic nuclei

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63. What does molecular geometry determine?

The general shape of a molecule

The mass of a molecule

The nuclear spin of a molecule

The chemical makeup of a molecule

Answer

Correct Answer: The general shape of a molecule

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64. What does a molecular formula give?

The tentative number of different atoms of an element in a molecule

The average number of different atoms of an element in a molecule

The exact number of different atoms of an element in a molecule

The number of different atoms of an element in a molecule

Answer

Correct Answer: The exact number of different atoms of an element in a molecule

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65. What is a molecular formula?

A chemical formula that gives the approximate number of different atoms of an element in a molecule

A chemical formula that gives the number of different molecules of an element in a molecule

A chemical formula that gives the exact number of different atoms of an element in a molecule

A chemical formula that gives the mass of a molecule

Answer

Correct Answer: A chemical formula that gives the exact number of different atoms of an element in a molecule

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66. What is Mole percent?

The percentage of mass of a component in a solution

The percentage of volume of a component in a solution

The percentage of moles of a component in a solution

The percentage of moles of a solution in a component

Answer

Correct Answer: The percentage of moles of a component in a solution

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67. What is the mole fraction?

The fraction of moles of a component in the total moles of a mixture

The amount of a substance that contains Avogadro's number of elementary entities.

A measure of the amount of a solute dissolved in a solvent

A mathematical relation between the distribution of brightness of light

Answer

Correct Answer: The fraction of moles of a component in the total moles of a mixture

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68. What is the unit for amount of substance?

Kilogram

Gram

Mole

Milligram

Answer

Correct Answer: Mole

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69. What is Molar mass?

The mass of one mole of substance.

The average mass of an isotope.

The mass of one atom of an element.

The sum of the atomic masses of all the atoms in a molecule.

Answer

Correct Answer: The mass of one mole of substance.

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70. What is the molar mass?

The sum of the atomic masses of all the atoms in a molecule

The mass of one mole of substance

The number of particles in one mole of a substance

The mass of one atom

Answer

Correct Answer: The mass of one mole of substance

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71. What is the molar gas volume?

The weight of one mole of gas

The number of moles of gas in one volume

The volume of one mole of gas

The amount of space between particles in a gas

Answer

Correct Answer: The volume of one mole of gas

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72. Which of the following is NOT a unit of molar gas constant?

Mol

T/P

L*kPa/K

J/(mol*K)

Answer

Correct Answer: T/P

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73. Molar gas constant (R) is the constant of proportionality relating what to T/P?

Density of a gas

Molarity of a gas

Speed of a gas

Molar volume of a gas

Answer

Correct Answer: Molar volume of a gas

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74. What does Molar concentration measure?

The moles of solute dissolved in one liter (cubic decimeter) of solution

The density of the solution

The volume of solute dissolved in one liter of solution

The mass of the solute

Answer

Correct Answer: The moles of solute dissolved in one liter (cubic decimeter) of solution

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75. What is molality?

The moles of solute per kilogram of solvent

The moles of solvent per kilogram of solute

The moles of solute per liter of solvent

The moles of solvent per liter of solute

Answer

Correct Answer: The moles of solute per kilogram of solvent

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76. What is the primary function of a moderator in a nuclear fission reactor?

Slowing down neutrons

Providing fuel for the reactor

Controlling the heat output

Generating electricity

Answer

Correct Answer: Slowing down neutrons

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77. What is a Mixture?

A material that cannot be separated into two or more substances

A material that can be separated by physical means into two or more substances

A physical change

A chemical change

Answer

Correct Answer: A material that can be separated by physical means into two or more substances

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78. What is the definition of miscible fluids?

Fluids that mix with each other in some proportions.

Fluids that mix with each other in all proportions.

Fluids that do not mix with each other.

Fluids that dissolve in each other.

Answer

Correct Answer: Fluids that mix with each other in all proportions.

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79. What does 'Miscible' mean in terms of fluids?

That only mix with each other in certain proportions.

That mix with or dissolve in each other in all proportions.

That mix with or dissolve in each other but with some left over.

That do not mix with each other at all.

Answer

Correct Answer: That mix with or dissolve in each other in all proportions.

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80. What is a mineral?

A naturally occurring inorganic solid substance with a definite crystalline form.

A living thing that cannot produce its own food

An energy resource that comes from the earth and is used to produce electricity

A naturally occurring, inorganic, solid substance that has a definite chemical composition but does not have a definite crystalline structure.

Answer

Correct Answer: A naturally occurring inorganic solid substance with a definite crystalline form.

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81. What is the unit of pressure known as the torr?

Torr

Millimeters of mercury (mmHg)

Millimeters

Mercury

Answer

Correct Answer: Millimeters of mercury (mmHg)

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82. What is the hydrophobic end?

The part of the molecule or ion that is attracted to oil

The part of the molecule or ion that is not attracted to oil

The part of the molecule or ion that is not attracted to water

The part of the molecule or ion that is attracted to water

Answer

Correct Answer: The part of the molecule or ion that is attracted to water

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83. Meter (m) is the SI base unit of what?

Length

Weight

Speed

Time

Answer

Correct Answer: Length

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84. What is the SI base unit of length?

Foot (ft)

Centimeter (cm)

Meter (m)

Kilometer (km)

Answer

Correct Answer: Meter (m)

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85. Which of the following is NOT true about a metastable nucleus?

It is in an excited state

It is a nucleus

It has a life-time of at least one nanosecond

It has a life-time of less than one nanosecond

Answer

Correct Answer: It has a life-time of at least one nanosecond

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86. What is the lifetime of a metastable nucleus?

At least one nanosecond

Greater than one second

At least one second

Less than one nanosecond

Answer

Correct Answer: At least one nanosecond

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87. What is the general formula for Metaphosphoric acids?

(HPO3)n

(H3PO4)n

(HPO4)n

(H3PO3)n

Answer

Correct Answer: (HPO3)n

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88. What is the scientific study of the production of metals from their ores called?

Metallurgy

Geology

Chemistry

Biology

Answer

Correct Answer: Metallurgy

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89. What is an element having both metallic and nonmetallic properties called?

Transition metal

Alkali metal

Noble gas

Metalloid

Answer

Correct Answer: Metalloid

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90. What is a metalloid?

A naturally-occurring element

An element having both metallic and nonmetallic properties.

A radioactive element

A man-made element.

Answer

Correct Answer: An element having both metallic and nonmetallic properties.

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91. What is a metallic solid?

A solid that consists of positive cores of atoms held together by a surrounding "sea" of electrons

A mixture that consists of positive cores of atoms held together by a surrounding "sea" of electrons

A liquid that consists of positive cores of atoms held together by a surrounding "sea" of electrons

A compound that consists of positive cores of atoms held together by a surrounding "sea" of electrons

Answer

Correct Answer: A solid that consists of positive cores of atoms held together by a surrounding "sea" of electrons

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92. What is the process of purifying a metal called?

Metal working

Metal refining

Metal purification

Metallurgy

Answer

Correct Answer: Metal refining

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93. What is metal refining?

The casting of a metal

The purification of a metal

The forging of a metal

The smelting of a metal

Answer

Correct Answer: The purification of a metal

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94. Which of the following is not a characteristic of metal?

Safety

Luster

Good conductor of heat

Does not conducts electricity

Answer

Correct Answer: Does not conducts electricity

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95. What does malleable mean?

Strong

Able to be molded or shaped

Unyielding

Brittle

Answer

Correct Answer: Able to be molded or shaped

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96. RNA that serves as a pattern for protein synthesis is?

Deoxyribonucleic Acid

Transfer RNA

Messenger RNA

Ribosomal RNA

Answer

Correct Answer: Messenger RNA

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97. What is the melting point?

The temperature at which a crystalline solid changes to a liquid

The freezing point

The temperature at which water freezes

The temperature at which water boils

Answer

Correct Answer: The temperature at which a crystalline solid changes to a liquid

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98. What is the change of a solid to the liquid state called?

Freezing

Sublimation

Melting

Boiling

Answer

Correct Answer: Melting

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99. What does a mass spectrometer measure?

Volume of atoms

Speed of atoms

Temperature of atoms

Mass-to-charge ratios of atoms

Answer

Correct Answer: Mass-to-charge ratios of atoms

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100. What is the mass percentage of solute?

The sum of the masses of all solutions

The density of a solution multiplied by the volume of the solution

The percentage of a solution that is solvent

The percentage by mass of solute contained in a solution

Answer

Correct Answer: The percentage by mass of solute contained in a solution

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