Related Questions

For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.
A (i) platinum (ii) sulphur
B (i) palladium (ii) oxygen
C (i) nickel (ii) sulphur
D (i) nickel (ii) oxygen
A catalyst is said to be a negative catalyst, ifit
A Retards the rate of reaction
B Reduces the value of equilibrium constant
C Does not initiate the reaction
D All of the above
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)
A Tan hT/T
B Tan T/T
C Tan hT/tan T
D None of these
One time measurement unit (TMU) in method time measurement system equals
A 0.0001 minute
B 0.0006 minute
C 0.006 minute
D 0.001 minute
Helium-mercury method can be used to determine the __________ of the catalyst particle.
A Pore volume
B Solid density
C Porosity
D All of the above
B.E.T. method can be used to determine the __________ of a porous catalyst.
A Solid density
B Pore volume
C Surface area
D All of the above
Which of the following measurement defines a measurement relative to a font’s x-height?
A ex
B em
C pt
D px
Which of the following measurement defines a measurement in centimeters?
A c
B cm
C centi
D centimeter
Which of the following measurement defines a measurement relative to the height of a font in em spaces?
A px
B in
C em
D pt
Which of the following measurement defines a measurement in points?
A px
B in
C em
D pt

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