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General Science problems


  • 1. Amalgams are

  • Options
  • A. highly coloured alloys
  • B. alloys which contain mercury as one of the contents
  • C. alloys which have great resistance to abrasion
  • D. alloys which contain carbon
  • Discuss
  • 2. LPG consists of mainly

  • Options
  • A. methane, ethane and hexane
  • B. ethane, hexane and nonane
  • C. methane, hexane and nonane
  • D. methane, butane and propane
  • Discuss
  • 3. Potassium Permanganate is used for purifying drinking water, because

  • Options
  • A. it is a sterilising agent
  • B. it dissolves the impurities of water
  • C. it is a reducing agent
  • D. it is an oxidising agent
  • Discuss
  • 4. Which metal pollute the air of a big city?

  • Options
  • A. Copper
  • B. Chromium
  • C. Lead
  • D. Cadmium
  • Discuss
  • 5. The main constituents of pearls are

  • Options
  • A. calcium oxide and ammonium chloride
  • B. calcium carbonate and magnesium carbonate
  • C. aragonite and conchiolin
  • D. ammonium sulphate and sodium carbonate
  • Discuss
  • 6. Which of the following does not contain a coinage metal?

  • Options
  • A. Silver and Gold
  • B. Zinc and Gold
  • C. Copper and Silver
  • D. Copper and Gold
  • Discuss
  • 7. Actinides are the elements with atomic numbers from

  • Options
  • A. 97 to 104
  • B. 101 to 115
  • C. 89 to 103
  • D. 36 from 43
  • Discuss
  • 8. Which of the following metals remain in liquid for under normal conditions?

  • Options
  • A. Radium
  • B. Zinc
  • C. Uranium
  • D. Mercury
  • Discuss
  • 9. Bell metal is an alloy of

  • Options
  • A. nickel and copper
  • B. zinc and copper
  • C. brass and nickel
  • D. tin and copper
  • Discuss
  • 10. Sodium metal is kept under

  • Options
  • A. petrol
  • B. alcohol
  • C. water
  • D. kerosene
  • Discuss

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