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MCQs

Total Questions : 204 | Page 8 of 21 pages
Question 71. Most of organic solvents are
  1.    strong electrolyte
  2.    non-electrolyte
  3.    weak electrolyte
  4.    poor insulators
 Discuss Question
Answer: Option B. -> non-electrolyte
Answer: (b).non-electrolyte
Question 72. Electrolysis is used for
  1.    electroplating
  2.    electrorefinning
  3.    extraction of metals
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 73. Metal core in power cable is not made up of
  1.    sulphur
  2.    phosphorus
  3.    mercury
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 74. Electrolyte liquid may include
  1.    solutions
  2.    molten solids
  3.    gases
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 75. During electrolysis, anions travel towards
  1.    cathode
  2.    anode
  3.    electrode
  4.    inert electrode
 Discuss Question
Answer: Option B. -> anode
Answer: (b).anode
Question 76. Hydrochloric Acid (HCl) is an example of
  1.    strong electrolyte
  2.    non-electrolyte
  3.    weak electrolyte
  4.    natural acid
 Discuss Question
Answer: Option A. -> strong electrolyte
Answer: (a).strong electrolyte
Question 77. On passing electricity through electrolyte solution,
  1.    the electrolyte splits up
  2.    the electrolyte decomposes
  3.    the ions migrate towards oppositely charged electrodes
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 78. Upon dissolving ionic substances or melting them,
  1.    they become good conductor of electricity
  2.    the crystal lattice gets destroyed
  3.    they loose electrical conductivity
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 79. Advantages dry cells offer are that they are
  1.    cheap
  2.    convenient
  3.    portable
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 80. For an overhead power cable, preferable metal conductor is
  1.    steel
  2.    aluminum
  3.    mercury
  4.    graphite
 Discuss Question
Answer: Option B. -> aluminum
Answer: (b).aluminum

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