Lakshya Education MCQs

Question: The percentage carbon content in wrought iron is about
Options:
A. 0.02
B. 0.1
C. 02
D. 0.4
Answer: Option A
Explanation :

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More Questions on This Topic :

Question 1. Which of the following element results in presence of free graphite in c.i.?
  1.     Carbon
  2.     Sulphur
  3.     Silicon
  4.     Manganese
Answer: Option C
Explanation :
Question 2. The percentage carbon content in wrought iron is about
  1.     0.02
  2.     0.1
  3.     02
  4.     0.4
Answer: Option A
Explanation :
Question 3. Grey cast iron
  1.     Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
  2.     Is also known as chilled cast iron is obtained by cooling rapidly. It is almost unmachinable
  3.     Is produced by annealing process. I is soft, tough and easily machined metal
  4.     Is produced by small additions o magnesium (or cerium) in the ladle Graphite is in nodular or spheroidal form and is well dispersed throughout the material
Answer: Option A
Explanation :
Question 4. The alloying element which can replace tungsten in high speed steels is
  1.     Nickel
  2.     Vanadium
  3.     Cobalt
  4.     Molybdenum
Answer: Option D
Explanation :
Question 5. Grey cast iron
  1.     Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
  2.     Is also known as chilled cast iron is obtained by cooling rapidly. It is almost unmachinable
  3.     Is produced by annealing process. I is soft, tough and easily machined metal
  4.     Is produced by small additions o magnesium (or cerium) in the ladle Graphite is in nodular or spheroidal form and is well dispersed throughout the material
Answer: Option A
Explanation :
Question 6. The alloying element which can replace tungsten in high speed steels is
  1.     Nickel
  2.     Vanadium
  3.     Cobalt
  4.     Molybdenum
Answer: Option D
Explanation :

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