Related Questions

Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.
A U-235
B U-233
C U-238
D PU-239
Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
A 18
B 16
C 14
D 12
Use of excess of combustion air in the combustion of fuels results in
A Heat losses
B Long flame
C Condensation of water vapour from the fuel gas
D None of these
Deficiency of combustion air during combustion of a gaseous fuel
A Lengthens the flame
B Causes heat loss of fuel by its partial combustion
C Both A & B
D Shortens the flame
The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by
A TOD > BOD > COD
B TOD > COD > BOD
C BOD > COD > TOD
D COD > BOD > TOD
Combustion of fuel in a furnace with oxygen enriched air results in higher
A Flue gas volume
B Flame temperature
C Fuel consumption
D Stack loss
What is meant by enrichment of "heart"?
A Enrichment to head, hand and mind in a harmonious way
B Enrichment of reading, writing and Arithmatic
C Enrichment of moral values for his profession
D Enrichment of hand and intellectuality
Job enrichment technique is applied to
A Reduce labour monotony
B Overcome boring and demotivating work
C Make people happy
D All of the above
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
A Uranium oxide
B Uranium hexaflouride
C Uranium carbide
D Uranium sulphate
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

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