Which of the following material has a shiny appearance?

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RRB JE CBT I - (Held On: 1 June 2019 Shift 1)
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  1. Aluminium 
  2. Sulphur
  3. Coal
  4. Carbon

Answer (Detailed Solution Below)

Option 1 : Aluminium 
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Detailed Solution

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The correct answer is Aluminium.

Key Points

  • Aluminium is the most abundant metal in the earth's crust
  • Metals are those elements that are shiny, hard, malleable, ductile, and good conductors of heat and electricity.
  • Aluminum is about one-third the weight of steel.
  • Aluminum reacts with oxygen to create a protective layer of aluminum oxide, which makes it ideal for use in corrosive environments.

Additional Information

  • Sulphur is not shiny because it is a non-metal and non-metals are non-lustrous except diamond and iodine.
  • Sulfur is the third most abundant chemical in the human body
  • Anthracite is the purest form of coal with 95% carbon whereas Peat is the poorest form of coal with 60% of carbon in it.
  • Carbon's atomic no. is 6 and the symbol is C.
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