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MCQs

Total Questions : 199 | Page 14 of 20 pages
Question 131. . Which part of an atom has no electrical charge?
  1.    Electron
  2.    Neutron
  3.    Proton
  4.    All of the above
 Discuss Question
Answer: Option B. -> Neutron
Question 132. . An example of potential energy is:
  1.    tea-kettle steam
  2.    a moving vehicle
  3.    the sun
  4.    a battery
 Discuss Question
Answer: Option D. -> a battery
Question 133. . In which states may matter may be found?
  1.    solid, liquid, or mineral
  2.    solid, gas, or liquid
  3.    mineral, gas, or liquid
  4.    plastic, solid, or gas
 Discuss Question
Answer: Option B. -> solid, gas, or liquid
Question 134. . One coulomb passing a point in one second is one:
  1.    ampere
  2.    volt
  3.    ohm
  4.    charge
 Discuss Question
Answer: Option A. -> ampere
Question 135. . If 40 C of charge flow past a point in 20 s, what is the current?
  1.    2 A
  2.    0.5 A
  3.    20 A
  4.    40 A
 Discuss Question
Answer: Option A. -> 2 A
Question 136. . Batteries differ from fuel cells in that
  1.    a battery is a closed system
  2.    a battery uses hydrogen and oxygen to create electricity
  3.    a battery uses a polymer electrolyte membrane
  4.    none of the above
 Discuss Question
Answer: Option A. -> a battery is a closed system
Question 137. . The removal of a non-neutral subatomic particle converts the atom into a:
  1.    charged ion
  2.    nucleus
  3.    heavier element
  4.    compound
 Discuss Question
Answer: Option A. -> charged ion
Question 138. . Material that consists of a mixture of elements is considered to be:
  1.    an element
  2.    an ion
  3.    a compound
  4.    a molecule
 Discuss Question
Answer: Option C. -> a compound
Question 139. . How many valence shell electrons are there in semiconductor atoms?
  1.    16
  2.    8
  3.    4
  4.    2
 Discuss Question
Answer: Option C. -> 4
Question 140. . When considering conventional current versus electron current flow:
  1.    electron current flow came first
  2.    protons move in conventional current flow
  3.    conventional current flow came first
  4.    the direction of current is the same in both methods
 Discuss Question
Answer: Option C. -> conventional current flow came first

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