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- Question
Nodular cast iron is produced by adding __________ to the molten cast iron.
Options- A. nickel
- B. chromium
- C. copper
- D. magnesium
- Correct Answer
- magnesium
- 1. The steel produced by bessemer or open hearth process is __________ to that produced by L-D process.
Options- A. superior
- B. inferior Discuss
- 2. The charge is fed into the blast furnace through the
Options- A. stack
- B. throat
- C. bosh
- D. tuyers Discuss
- 3. Which of the following process of steel making is in operation at Tata Iron and Steel Works, Jamshedpur?
Options- A. Bessemer process
- B. Open hearth process
- C. Duplex process
- D. Electric process Discuss
- 4. The hardness is the property of a material due to which it
Options- A. can be drawn into wires
- B. breaks with little permanent distortion
- C. can cut another metal
- D. can be rolled or hammered into thin sheets Discuss
- 5. A material is said to be allotropic, if it has
Options- A. fixed structure at all temperatures
- B. atoms distributed in random pattern
- C. different crystal structures at different temperatures
- D. any one of the above Discuss
- 6. Silicon when added to copper improves
Options- A. machinability
- B. hardness
- C. hardness and strength
- D. strength and ductility Discuss
- 7. The hardness of steel increases if it contains
Options- A. pearlite
- B. ferrite
- C. cementite
- D. martensite Discuss
- 8. Brass is an alloy of
Options- A. copper and zinc
- B. copper and tin
- C. copper, tin and zinc
- D. none of these Discuss
- 9. The cupola is used to manufacture
Options- A. pig iron
- B. cast iron
- C. wrought iron
- D. steel Discuss
- 10. Cast iron is manufactured in
Options- A. blast furnace
- B. cupola
- C. open hearth furnace
- D. bessemer converter Discuss
Engineering Materials problems
Search Results
Correct Answer: inferior
Correct Answer: throat
Correct Answer: Duplex process
Correct Answer: can cut another metal
Correct Answer: different crystal structures at different temperatures
Correct Answer: hardness and strength
Correct Answer: cementite
Correct Answer: copper and zinc
Correct Answer: cast iron
Correct Answer: cupola
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