A. 770°C
B. 910°C
C. 1440°C
D. 1539°C
E. none of the above
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Related Mcqs:
- The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is _______________?
- A. 770°C B. 910°C C. 1050°C D. below recrystallisation temperature E. above recrystallization temperature...
- The crystal structure of gamma iron is_________________?
- A. body centred cubic B. face centred cubic C. hexagonal close packed D. cubic structure E. orthorhombic crystal...
- Gamma iron exits at following temperature___________________?
- A. room temperature B. near melting point C. between 1400°C and 1539°C D. between 910°C and 1400°C E. none of the above...
- The crystal of alpha iron is ____________________?
- A. body centred cubic B. face centred cubic C. hexagonal close packed D. cubic structure E. orthorhombic crystal...
- Ferromagnetic alpha iron exists in temperature range of________________?
- A. below 723°C B. 770 – 910°C C. 910-1440°C D. 1400-1539°C E. above 1539°C...
- An important property of malleable cast iron in comparison to grey cast iron is the high___________________?
- A. compressive strength B. ductility C. carbon content D. hardness E. surface finish...
- Which of the following is mostly used used as blast furnace fuel for extracting pig iron from iron ores?
- A. Brown coal B. Anthracite coal C. Hard coke D. Woodchar coal Submitted by: Faheem Zaman Dhaunroo...
- Hard coke is produced by carborisation of coal at_______________?
- A. atmospheric temperature B. 500-600°C C. 70O-850°C D. 95O-1100°C E. 120O-1500°C...
- Cast iron has_________________?
- A. high tensile strength B. its elastic limit close to the ultimate breaking strength C. high ductility D. all of the above E. none of the above...
- Melting point of iron is__________________?
- A. 1539°C B. 1601°C C. 1489°C D. 1712°C E. 1131°C...
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