Particle Size Measurement and Pseudo Order Reaction MCQs Questions Answers
Which of the following is the minimum size of particle which can be separated through sieve analysis?
(A). Â 75 microns
(B). Â 100 microns
(C). Â 20 microns
(D). 44 microns
(E). None of these
Multiple Choice Question Answer: Â d
The method of particle size measurement is ______
(A). All of these
(B). Â Microscopic examination
(C). Â Sedimentation analysis
(D). Â Sieve analysis
(E). None of these
Multiple Choice Question Answer:Â a
Which of the following is The instrument that is used for the examination of particle size = 0.5 micron?
(A). Â Telescope
(B). Â Electron microscope
(C). Â Microscope
(D). Â All of these
(E). None of these
Multiple Choice Question Answer: Â c
Sedimentation analysis is applicable to the liquid dispersions that are containing how much % solids?
(A). Â 5-10
(B). Â 2-5
(C). Â 1-3
(D). Â 4-8
(E). None of these
Multiple Choice Question Answer: Â b
The Sedimentation techniques are particularly useful for the particle size ranging from Which of the following?
(A). 40-2 µm
(B).   50-10 µm
(C).  100-50 µm
(D).  80-40µm
(E). None of these
Multiple Choice Question Answer:Â a
What measure does the current that is generated in the photoelectric cell represents?
(A). Â Cohesivity
(B). Â Adhesivity
(C). Â Turbidity
(D). Â Viscosity
(E). None of these
Multiple Choice Question Answer: Â c
In the photo-extinction method, a source of light is directed through Which of the following suspension?
(A). Â Kerosene in cement
(B). Â Water in cement
(C). Â Cement in water
(D). Â Cement in kerosene
(E). None of these
Multiple Choice Question Answer: Â d
The Adsorption method for measurement of the total surface area always involves the evaluation of the quantity of Which of the following?
(A). Â Nitrogen gas
(B). Â Oxygen gas
(C). Â Helium gas
(D). Â Argon gas
(E). None of these
Multiple Choice Question Answer:Â a
Due to what the Fibrous fillers have a high capacity for absorbing energy?
(A). Â Composition
(B). Â Size
(C). Â Shape
(D). Â Surface area
(E). None of these
Multiple Choice Question Answer: Â c
______________ is an example of pseudo first order reaction?
(A). Â Saponification of ester
(B). Â Oxidation of hydrogen bromide
(C). Â Gaseous decomposition of hydrogen iodide
(D). Â Inversion of cane sugar
(E). None of these
Multiple Choice Question Answer: Â d
. yet which order kinetics are called pseudo unimolecular reaction Reactions which are bimolecular?
(A). Â First
(B). Â Second
(C). Â Zero
(D). Â Third
(E). None of these
Multiple Choice Question Answer:Â a
which of the following are based on the collision model, the atoms at the top of the potential energy hill?
(A). Â Transition state
(B). Â Energetic atom
(C). Â Steric factor
(D). Â Activation energy
(E). None of these
Multiple Choice Question Answer: Â a
_______ concentration plot is linear for a first-order reaction.A is one of the reactants
(A). Â [A]2 versus time
(B). Â Ln[A] versus time
(C). Â [A] versus time
(D). Â v[A] versus time
(E). None of these
Multiple Choice Question Answer:Â b
. Termolecular refer to which one?
(A). 3 molecules colliding
(B). Â 5 molecules colliding
(C). Â 4 molecules colliding
(D). Â 2 molecules colliding
(E). None of these
Multiple Choice Question Answer: Â a
. Threshold energy is the sum of which one?
(A). Â external energy and activation energy of reactants
(B). Â internal energy and activation energy of reactants
(C). Â external energy ad internal energy of reactants
(D). Â thermal energy and activation energy
(E). None of these
Multiple Choice Question Answer:Â b
. the rate = k[NO]2[O2] for a certain reaction, when the initial concentration of NO is tripled, what is the initial rate?
(A). Â Increases by a factor of six
(B). Â Increases by a factor of three
(C). Â Decreases by a factor of nine
(D). Â Increases by a factor of nine
(E). None of these
Multiple Choice Question Answer: Â d
. which of the following is the rate-determining step in a series of reactions?
(A). Â Slowest
(B). Â Simplest
(C). Â Fastest
(D). Â Fast and complex
(E). None of these
Multiple Choice Question Answer: Â a
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