Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

Related Mcqs:

Oxide layer formed on the non-ferrous metal surface after its annealing is__________________?

A. Removed by acid pickling B. Hammered into the surface C. Removed with coarse emery cloth D. Left as such to protect the surface...

Good design of the casing of a centrifugal pump aims at minimising the __________________________?

A. Cavitation B. Frictional losses C. Kinetic energy loss D. Static head...

____________________ flux is used for the extraction of metal from its self fluxing ores?

A. No B. Acid C. Basic D. Neutral...

Which of the following phenomenon will exhibit the minimum heat transfer ?

A. Boiling B. Forced convection in air C. Free convection in air D. Conduction in air...

Larger length & diameter water pipes are made by____________________?

A. Electrical resistance welding B. Die casting C. Semi-centrifugal casting D. Continuous casting...