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GENERAL SCIENCE - ELEMENTS AND METALS MCQs

Total Questions : 70 | Page 7 of 7 pages
Question 61. . Which of the following metals remain in liquid for under normal conditions?
  1.    Radium
  2.    Zinc
  3.    Uranium
  4.    Mercury
 Discuss Question
Answer: Option C. -> Uranium
Question 62. . Potassium Permanganate is used for purifying drinking water, because
  1.    it is a sterilising agent
  2.    it dissolves the impurities of water
  3.    it is a reducing agent
  4.    it is an oxidising agent
 Discuss Question
Answer: Option D. -> it is an oxidising agent
Question 63. . Which of the following is an element?
  1.    Ruby
  2.    Sapphire
  3.    Emerald
  4.    Diamond
 Discuss Question
Answer: Option D. -> Diamond
Question 64. . Which of the following is not an isotope of hydrogen?
  1.    Tritium
  2.    Deuterium
  3.    Protium
  4.    Yttrium
 Discuss Question
Answer: Option D. -> Yttrium
Question 65. . Which of the following metals remain in liquid for under normal conditions?
  1.    Radium
  2.    Zinc
  3.    Uranium
  4.    Mercury
 Discuss Question
Answer: Option C. -> Uranium
Question 66. . Amalgams are
  1.    highly coloured alloys
  2.    alloys which contain mercury as one of the contents
  3.    alloys which have great resistance to abrasion
  4.    alloys which contain carbon
 Discuss Question
Answer: Option B. -> alloys which contain mercury as one of the contents
Question 67. . Which of the following is the lightest metal?
  1.    Mercury
  2.    Lithium
  3.    Lead
  4.    Silver
 Discuss Question
Answer: Option B. -> Lithium
Question 68. . The main constituents of pearls are
  1.    calcium oxide and ammonium chloride
  2.    calcium carbonate and magnesium carbonate
  3.    aragonite and conchiolin
  4.    ammonium sulphate and sodium carbonate
 Discuss Question
Answer: Option B. -> calcium carbonate and magnesium carbonate
Question 69. . Which of the following is an element?
  1.    Ruby
  2.    Sapphire
  3.    Emerald
  4.    Diamond
 Discuss Question
Answer: Option D. -> Diamond
Question 70. . Potassium Permanganate is used for purifying drinking water, because
  1.    it is a sterilising agent
  2.    it dissolves the impurities of water
  3.    it is a reducing agent
  4.    it is an oxidising agent
 Discuss Question
Answer: Option D. -> it is an oxidising agent

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