Which of the following is an oxygen compound?
A.Naththenic acid
B.Indole
C.Pyrrole
D.Methyl mercaptan
A.Naththenic acid
B.Indole
C.Pyrrole
D.Methyl mercaptan
A.the driving for the vapour flow is the pressure drop
B.the driving force for the liquid flow is its weight
C.the liquids and vapours are always at their bubble point and dew point respectively
D.all of these answers
A.Air to heavy tars
B.Air to carbondioxide
C.Steam to oil
D.Steam condensers
A.80% H2SO4 only
B.98% H2SO4 and higher
C.95% H2SO4 only
D.90% H2SO4 only
A.when the straight-line method is used
B.when the sum-of-the-years-digits method is used
C.when the declining-balance method is used
D.none of the above
A.Motor spirit
B.Furnace oil
C.High speed diesel oil
D.Kerosine
A.flash point
B.kindling temperature
C.burning temperature
D.none of the above
A.power
B.work
C.entropy
D.pressure
A.70% NaOH solution
B.60% NaOH solution
C.98.5% NaOH solution
D.10-12% NaOH solution