On weight basis, air contains following parts of oxygen
A. 21
B. 23
C. 25
D. 73
Answer: Option B
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Related Questions on Engineering Thermodynamics
Addition of heat at constant pressure to a gas results in
A. Raising its temperature
B. Raising its pressure
C. Raising its volume
D. Raising its temperature and doing external work
Which of the following items is not a path function?
A. Heat
B. Work
C. Kinetic energy
D. Thermal conductivity
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is
A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications
The absolute zero pressure can be attained at a temperature of
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B. -273°C
C. 273 K
D. None of these
weight basis-23
volume basis-21
Option A, ie 21 is the answer.