Chemical Reaction MCQs

188 MCQs  — Chemical Engineering MCQs  (Page 6 of 19)

Attempt Chemical Reaction Quiz
For a homogeneous reaction of nth order, the dimension of the rate constant is given by_________________?
A. 1/(time)n
B. (concentration)1 – n/(time)
C. (concentration)n – 1/(time)
D. None of these
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A catalyst promoter_________________?
A. Improves the activity of a catalyst
B. Acts as a catalyst support
C. Itself has very high activity
D. All a., b. and c.
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The vessel dispersion number (D/μL) for plug flow is_________________?
A. 0
B. 500
C. 750
D. ∞
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The rate constant of a reaction is a function of the ___________________?
A. Time of reaction
B. Temperature of the system
C. Extent of reaction
D. Initial concentration of the reactants
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Cold shot cooling is only practical when the feed temperature is ______________ than the reaction temperature?
A. Higher
B. Much higher
C. Lower
D. Much lower
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Autocatalytic reactions are best carried out in a_________________?
A. Cstr
B. Cstr in series
C. Plug flow reactor
D. Recycle reactor
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Bulk diffusion in catalyst pore _______________ with increase in pressure?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially
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For the reversible reaction A ⇌ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?
A. 0.253
B. 0.338
C. 0.152
D. 0.637
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The extent of a reaction is ___________________?
A. Different for reactants and products
B. Dimensionless
C. Depends on the stoichiometric co-efficient
D. All of the above
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Arrhenius equation represents graphically the variation between the ______________ and temperature?
A. Rate of reaction
B. Frequency factor
C. Rate constant
D. Activation energy
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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