Matte smelting is used in the extraction of_____________________?

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...

With increase in compression ratio, the volumetric efficiency of air compressor____________________?

A. Increases B. Decreases C. Remain same D. May increase or decrease (depends on the suction pressure)...

Laser is a device to produce___________________?

A. Gamma rays B. Microwaves C. A beam of white light D. A beam of coherent light...

M10 index of coke indicates its____________________?

A. Compressive strength B. Hardness C. Abrasion resistance D. Impact strength...

Direct conversion of thermal energy to electrical energy is facilitated by the____________________?

A. Fuel cells B. Photo voltaic cell C. Magneto hydrodynamic generator D. None of these...