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Doctors Medicines MCQs Q&A

  1. Cobalt
  2. Aluminium
  3. Carbon
  4. Nickel
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2 Answers

Option 3 : Carbon

  • Carbon is added to iron to make it hard and strong because by adding the impurity of Carbon it stops the dislocation of the Iron atoms in the crystal lattice from sliding past one another.
  • Therefore this type of impurity is used to control the hardness, ductility, and tensile strength of iron.
  • Carbon is also added to Steel to increase its strength and hardness.
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Option 3 : Carbon

  • Carbon is added to iron to make it hard and strong because by adding the impurity of Carbon it stops the dislocation of the Iron atoms in the crystal lattice from sliding past one another.
  • Therefore this type of impurity is used to control the hardness, ductility and tensile strength of carbon
  • Carbon is also added to Steel to make increase its strength and hardness.
4 views

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