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MCQs

Total Questions : 204 | Page 10 of 21 pages
Question 91. Polarization is a property applying to transverse waves and it refers to
  1.    prevention of electricity flowing in an electrolyte solution
  2.    rapid dissolving of magnesium in dilute acid
  3.    slow dissolving of magnesium in concentrated acid
  4.    electricity flowing in an electrolyte solution
 Discuss Question
Answer: Option A. -> prevention of electricity flowing in an electrolyte solution
Answer: (a).prevention of electricity flowing in an electrolyte solution
Question 92. Selective charges occurs for the
  1.    ions which require least energy to be discharged
  2.    ions which require most energy to be discharged
  3.    elements of group VII
  4.    metal chlorides
 Discuss Question
Answer: Option A. -> ions which require least energy to be discharged
Answer: (a).ions which require least energy to be discharged
Question 93. In a dry cell, function of zinc casing is to
  1.    act as the negative electrode
  2.    act as the positive terminal
  3.    hold the carbon rod
  4.    act as electrolyte
 Discuss Question
Answer: Option A. -> act as the negative electrode
Answer: (a).act as the negative electrode
Question 94. In electroplating, solution must be of salt of metal
  1.    to electroplate with
  2.    of the object to be electroplated
  3.    to any type of liquid
  4.    sodium
 Discuss Question
Answer: Option A. -> to electroplate with
Answer: (a).to electroplate with
Question 95. In electrolysis of aqueous Copper(II) Sulfate (CuSO₄) with Carbon (C) electrode,
  1.    oxygen gas is given off at anode
  2.    Sulfur dioxide is given off at anode
  3.    oxygen gas is given off at cathode
  4.    Sulfur dioxide is given off at cathode
 Discuss Question
Answer: Option A. -> oxygen gas is given off at anode
Answer: (a).oxygen gas is given off at anode
Question 96. What is true about Ceramics?
  1.    it is hard only
  2.    it is unreactive only
  3.    reactive
  4.    it is hard and unreactive
 Discuss Question
Answer: Option D. -> it is hard and unreactive
Answer: (d).it is hard and unreactive
Question 97. Variety of ceramics made up of
  1.    silicon dioxide
  2.    silicon(II) oxide
  3.    silicon trioxide
  4.    silicon IV oxide
 Discuss Question
Answer: Option C. -> silicon trioxide
Answer: (c).silicon trioxide
Question 98. An inorganic non-metallic solid prepared by heating a substance to a very high temperature is called
  1.    molten
  2.    ceramics
  3.    pirate
  4.    metal
 Discuss Question
Answer: Option B. -> ceramics
Answer: (b).ceramics
Question 99. Ceramics can be molded into different types of shapes at a very higher temperature without affecting its
  1.    strength
  2.    effectiveness
  3.    durability
  4.    none of above
 Discuss Question
Answer: Option D. -> none of above
Answer: (d).none of above
Question 100. Ceramics can conduct
  1.    heat
  2.    electricity
  3.    light
  4.    none of above
 Discuss Question
Answer: Option D. -> none of above
Answer: (d).none of above

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