Blast furnace produces following by reduction of iron ore_______________?

Related Mcqs:

1. 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...

2. 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...

3. 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...

4. 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...

5. Cupola produces following material__________________?

   A. cast iron B. pig iron C. wrought iron D. malleable iron E. white iron...

6. Cast iron is characterised by minimum of following %age of carbon_________________?

   A. 0.2% B. 0.8% C. 1.3% D. 2% E. 6.3%....

7. 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...

8. Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?

   A. 50 : 20 : 20 : 10 B. 40 : 30 : 20 : 10 C. 50 : 20 : 10 : 20 D. 30 : 20 : 30 : 20 E. 50 : 10 : 20 : 20...

9. In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine__________________?

   A. lancashire boiler B. locomotive boiler C. babcock and wilcox boiler D. cochran boiler E. benson boiler...

10. The ignition coil in diesel engines produces voltage of the order of________________?

    A. 6 to 12 volts B. 240 volts C. 1000 volts D. 20,000 volts E. 80,000 volts...