A. 1
B. 2
C. 3
D. 4
Related Mcqs:
- Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is ?
A. 0
B. 1
C. 2
D. 3 - The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?
A. 2 & 1
B. 11 & 2
C. 2 & 2
D. 1 & 1 - In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)_____________________?
A. CA
B. CA2
C. CA3
D. CA4 - For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?
A. -rA = (k . PA . PB)/(1 + KAPA + KPPP)
B. -rA = (k . PA
2 – k1PP)/(1 + KAPA + KPPP)
C. -rA = (k . PA . PB)/(1 + KAPB + KBPB . KPPP)
D. -rA = (k . PA . PB)/(1 + KAPA) - 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 - Molecularity of a reaction__________________?
A. Is always equal to the overall order of reaction
B. May not be equal to the order of reaction
C. Can’t have a fractional value
D. Both B. and C. - The reactions of high molecularity are rare, because________________?
A. Of very large activation energy of many bodies
B. Of low probability of many body collisions
C. Many body collisions are not favoured energetically
D. Of requirement of very large concentration for such reactions - Which of the following holds good for an elementary reaction as shown in the bellow figure ?
A. The rate of disappearance of ‘Y’ is equal to the rate of appearance of ‘Z’
B. The rate of disappearance of ‘Y’ is equal to the rate of disappearance of ‘X’
C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’
D. The rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’ - According to Arrhenius equation of temperature dependency of rate constant for an elementary reaction _________________?
A. k ∝ √T
B. k ∝ e-E/RT
C. k ∝ T e-E/RT
D. None of these - For the chemical reaction X → Y, it is observed that, on doubling the concentration of ‘X’, the reaction rate quadruples. If the reaction rate is proportional to Cx n, then what is the value of „n‟ ?
A. 1/4
B. 2
C. 4
D. 16
