A. Corrosion
B. Sequestration
C. Scale formation
D. None of these
Related Mcqs:
- Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about ______________ °C ?
A. -83
B. -183
C. -196
D. -218 - Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about _____________ °C ?
A. -53
B. -103
C. -183
D. -196 - Brackish water which contains mostly dissolved salt, can be purified by the __________________ process?
A. Reverse osmosis
B. Sand filter
C. Lime soda
D. Permutit - 99.5% purity oxygen is used in_____________________?
A. Cutting and welding by oxy-acetylene flame
B. Hospitals for medicinal purposes
C. Gas masks and artificial breathing apparatus
D. All A, B, and C. - Low purity oxygen is used for____________________?
A. L.D. steel making
B. Cutting and welding of metals
C. Medicinal purposes
D. Chemical oxidation processes - Oxygen is produced by fractionation of air using _____________ process?
A. Linde’s
B. Claude’s
C. Either A. or B.
D. None of these - Separation of fresh water from sea water can be done by the _______________ operation ?
A. Osmosis
B. Reverse osmosis
C. Absorption
D. Adsorption - 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 - Nylon-6 as compared to Nylon-66 is having higher___________________?
A. Hardness
B. Abrasion/resistance
C. Melting point
D. None of these - Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?
A. Flint
B. Soda
C. Pyrex
D. Potash
