Radiation heats transfer between two surfaces can be reduced by
A.Polishing the surface
B.Bringing the surfaces closer together
C.Preheating the surfaces closer together
D.Introducing radiation shield between the surfaces
Category: Chemical Engineering Mcqs
The pressure at a point in a static or uniformly moving fluid is equal in all directions. This statement is known as
A.Newtons law of gravitation
B.Archimedes principle
C.Paseal law
D.Toricellis theorem
Thermal conductivity of water at 20?C is nearly
A.0.051
B.0.09
C.0.11
D.0.5
E.1
The ratio of the specific charge e/m of a proton to that of an alpha particle is
A.1:20
B.1:40
C.4:10
D.2:10
Which of the following glasses does not contain basic oxide?
A.Flint glass
B.Crown glass
C.Quartz glass
D.Pyrex glass
The antiparticle of electron is
A.proton
B.positron
C.antiproton
D.neutron
The tempering of steel makes it
A.hard
B.soft
C.heavy
D.brittle
A convenient unit for expressing very low pressures is the micron. A micron abbreviated u is
A.0.1 mm of Hg column absolute pressure at 0?C
B.1 mm of Hg column absolute pressure at 0?C
C.0.01 mm of Hg column absolute pressure at 0?C
D.0.001 mm of Hg column absolute pressure at 0?C
Composition of CO2 is the flue gas is determined by
A.polarograph
B.mass spectrometer
C.thermal conductivity cell
D.polarimeter
The average life of a radioactive atom is Where T + half-life period
A.T/1.44
B.1.44T
C.0.144 T
D.14.4 T
