Sodium tripolyphosphate (STPP) is mainly used
A.in detergents formulation
B.in machine industries
C.as fertilizer
D.in plastics and coatings
Category: Chemical Engineering Mcqs
Hydrocracking is a
A.high pressure and low temperature process
B.low pressure and high temperature process
C.low pressure and low temperature process
D.high pressure and high temperature process
In an operating cooling tower the wet-bulb temperature of entering air is increased keeping all other variable constant. The outlet water temperature will
A.remain constant
B.decrease
C.increase
Diffusion coefficient of water into air at 26?C is nearly
A.0.026 cm2/s
B.0.26 cm2/s
C.2.6 cm2/s
D.5.2 cm2/s
E.2.6 cm2/sec
?40?C is equivalent to
A.172?R
B.273?K
C.500?R
D.? 40?K
E.? 40?F
Which of the following is the most suitable to measure a temperature of -250?C?
A.Constant-volume helium thermometer
B.Paltinum resistance thermometer
C.Radiation pyrometer
D.Ordinary mercury-in-glass themometer
Radio active nuclear waste is treated in
A.Pulsed column extractor
B.Mixer settler extractor
C.Sieve plate extraction column
D.Bollman extractor
E.None of the above
Naphthenes
A.are unsaturated cyclic compounds
B.are straight chain saturated compounds
C.are saturated cyclic compounds
D.and paraffins have the same general formula CnH2n+2
In a nuclear explosion the energy is released in the form of
A.electrical energy
B.thermal energy
C.kinetic energy
D.potential energy
Deuterium atom has
A.2 electrons in the outermost orbit
B.two protons in the nucleus
C.two neutrons in the nucleus
D.one proton and one neutron in the nucleus
