A. below 723°C
B. 770 – 910°C
C. 910-1440°C
D. 1400-1539°C
E. above 1539°C
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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...
- Paramagnetic alpha iron changes to gamma iron at_______________?
- A. 770°C B. 910°C C. 1440°C D. 1539°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...
- 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...
- Delta iron occurs at temperature of_______________?
- A. room temperature B. above melting point C. between 1400°C and 1539°C D. between 910°C and 1400°C E. none of the above...
- Super conduction by metals is observed in the temperature range of_________________?
- A. below 10°K B. above 100°K C. around 0°C D. around 100°C E. above 1000°C...
- Petrol is distilled at a temperature in range of__________________?
- A. 30 – 65°C B. 65 – 220°C C. 220-350°C D. 350-450°C E. 450-550°C...
- At very low temperature, the melting and boiling temperatures become equal. This temperature is____________________?
- A. 373°K B. 273.16°K C. 303°K D. 0°K. E. 300°K...
- Corrosion resistance of steel is increased by addition of________________?
- A. chromium and nickel B. sulphur, phosphorus, lead C. vanadium, aluminium D. tungsten, molybdenum, vanadium, chromium E. zinc...
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