A. -53
B. -103
C. -183
D. -196
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 - 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 - High purity nitrogen is used in__________________?
A. Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
B. Fire fighting purposes
C. Both A. & B.
D. Neither A. nor (B) - Multistage catalytic converter is not used in the___________________?
A. Conversion of SO2 to SO3
B. NH3 synthesis reaction
C. Both A. and B.
D. Neither A. nor B. - L.D. converter is used in the production of_________________?
A. Pig iron
B. Steel
C. Copper
D. Zinc - The catalyst used in shift converter is___________________?
A. Nickel
B. Vanadium
C. Silica gel
D. Alumina - Conversion of SO2 to SO3 in Monsanto 4-pass converter is about ____________________ percent?
A. 80
B. 90
C. 98
D. 100 - Oxygen is produced by fractionation of air using _____________ process?
A. Linde’s
B. Claude’s
C. Either A. or B.
D. None of these - Use of water having dissolved oxygen in boilers promotes___________________?
A. Corrosion
B. Sequestration
C. Scale formation
D. None of these
