Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about _____________ °C ?

Related Mcqs:

Sucrose is a__________________?

A. Monosaccharide B. Disaccharide C. Polysaccharide D. None of these...

Enzymes are_________________?

A. Proteins with high molecular weight (around 10,000) B. Derived from living organisms C. Catalyst for temperature sensitive reactions D. All A, B. and C....

Iron ore hematite is concentrated using ____________________?

A. Electromagnetic separation mainly B. Gravity separation C. Froth floatation D. Roasting...

Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?

A. As a lubricant B. As a rust preventive C. In hard water for cleaning of cloth D. As a foam depressant in distillation column...

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?

A. Calcium sulphate B. Sodium chloride C. Sodium sulphate D. Magnesium chloride...