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MCQs

Total Questions : 204 | Page 7 of 21 pages
Question 61. Examples of non-electrolyte includes
  1.    oil
  2.    paraffin
  3.    alcohol
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 62. Graphite is a conductor of electricity because
  1.    it has valence electrons
  2.    it is a non-metal form of Carbon
  3.    it is an allotrope of Carbon
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 63. Overhead cables are insulated from pylons through
  1.    plastic
  2.    ceramics and glass
  3.    rubber
  4.    PVC
 Discuss Question
Answer: Option B. -> ceramics and glass
Answer: (b).ceramics and glass
Question 64. Least reactive metal in given series is
  1.    magnesium
  2.    zinc
  3.    iron
  4.    tin
 Discuss Question
Answer: Option D. -> tin
Answer: (d).tin
Question 65. A substance which conducts electricity but is not changed during electrolysis is
  1.    electrode
  2.    conductor
  3.    insulator
  4.    catalyst
 Discuss Question
Answer: Option B. -> conductor
Answer: (b).conductor
Question 66. Sulfurous Acid (H₂SO₃) is
  1.    strong electrolyte
  2.    non-electrolyte
  3.    weak electrolyte
  4.    white in color
 Discuss Question
Answer: Option C. -> weak electrolyte
Answer: (c).weak electrolyte
Question 67. Easy to shape materials like ceramics are used as
  1.    conductors
  2.    insulators
  3.    electrodes
  4.    catalysts
 Discuss Question
Answer: Option B. -> insulators
Answer: (b).insulators
Question 68. Pure water (H₂O) is an example of
  1.    strong electrolyte
  2.    non-electrolyte
  3.    weak electrolyte
  4.    poor insulator
 Discuss Question
Answer: Option B. -> non-electrolyte
Answer: (b).non-electrolyte
Question 69. Most reactive metal in given series is
  1.    zinc
  2.    tin
  3.    lead
  4.    iron
 Discuss Question
Answer: Option A. -> zinc
Answer: (a).zinc
Question 70. Difficulty of discharge is lowest in
  1.    magnesium ions
  2.    zinc ions
  3.    lead ions
  4.    hydrogen ions
 Discuss Question
Answer: Option D. -> hydrogen ions
Answer: (d).hydrogen ions

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