A. Decreases with increase in temperature
B. Increases with increase of pressure of reactants for all reactions
C. Decreases with increase of reactant concentration
D. None of these
Related Mcqs:
- The catalyst in a second order reversible reaction increases the rate of the forward reaction___________________?
A. And decreases that of backward reaction
B. And backward reaction equally
C. Only
D. To a greater extent than that of the backward reaction - For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min-1. What will be the conversion for a PFR with a space velocity of 0.2 min-1? Assume that all the other operating conditions are the same for CSTR and PFR ?
A. 0.15
B. 0.30
C. 0.60
D. 0.90 - Chemical kinetics can predict the _______________ of a chemical reaction?
A. Rate
B. Feasibility
C. Both A. & B.
D. Neither A. nor B. - The minimum energy required to allow a chemical reaction to proceed is termed as the ‘threshold energy ‘. Chemical reactions with low activation energy are ________________?
A. Always irreversible
B. Insensitive to temperature changes
C. Mostly irreversible
D. Highly temperature sensitive - In a chemical reaction as shown in the bellow figure, it is observed that the (i) Rate of formation of ‘P’ is doubled on doubling the concentration of ‘X’ (ii) Rate of formation of ‘P’ is quadrupled on doubling the concentration of ‘Y’ (iii) Doubling the concentration of ‘Z’ does not affect the rate of formation of ‘P’ What is the order of the above chemical reaction ?
A. Zeroth order
B. First order
C. Second order
D. Third order - For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of ‘P’ is doubled. If the reaction rate is proportional to Cp n, then what is the value of ‘n’ for this chemical reaction ?
A. 0
B. 1
C. 2
D. 3 - Pick out the wrong statement pertaining to space velocity of flow reactors?
A. The unit of space velocity is (time)-1
B. The space velocity of 3 hr-1 means that three reactor volumes of feed at specified conditions
are being fed into the reactor every hour
C. The space velocity of 3 hr-1 means that one third reactor volume of feed at specified
conditions are being fed into the reactor
D. None of these - A space velocity of 5 hr-1 means that ___________________?
A. Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
B. After every 5 hours, reactor is being filled with the feed
C. Cent per cent conversion can be achieved in at least 5 hours
D. A fixed conversion of a given batch of feed takes 5 hours - A high space velocity means that a given__________________?
A. Reaction can be accomplished with small reactor
B. Conversion can be obtained with a high feed rate
C. Both A. and B.
D. None of these - Velocity of a reaction depends upon the_________________?
A. Nature of the reactants
B. Concentration of the reactants
C. Temperature at which the reaction is carried
D. All A., B. and C.
