Collision Theory of Bimolecular Gaseous Reactions NEET Questions

Physical Chemistry - Chemical Kinetics

Collision Theory of Bimolecular Gaseous Reactions MCQ Questions


7.
The modified expression for the rate of a bimolecular reaction including the probability factor is:
A.
Rate = Z_AB × e^(-Ea/RT) / P
B.
Rate = P × Z_AB / e^(-Ea/RT)
C.
Rate = P × Z_AB × e^(-Ea/RT)
D.
Rate = P + Z_AB × e^(-Ea/RT)
😑 View Answer Rough Work Error
ANSWER :
C. Rate = P × Z_AB × e^(-Ea/RT)
8.
Which of the following assumptions is NOT made in collision theory?
A.
Reactant molecules are hard spheres
B.
Reactant molecules have variable shapes during collision
C.
Reaction occurs only when molecules collide
D.
Effective collisions require sufficient energy
😑 View Answer Rough Work Error
ANSWER :
B. Reactant molecules have variable shapes during collision
9.
The Arrhenius equation k = A × e^(-Ea/RT) and collision theory expression Rate = Z_AB × e^(-Ea/RT) are related such that:
A.
A is independent of collision frequency
B.
A is equal to activation energy
C.
The pre-exponential factor A corresponds to the collision frequency Z_AB
D.
A corresponds to e^(-Ea/RT)
😑 View Answer Rough Work Error
ANSWER :
C. The pre-exponential factor A corresponds to the collision frequency Z_AB
10.
Effective collisions are those which:
A.
Have energy ≥ Ea AND occur with proper orientation
B.
Have any random orientation but high energy
C.
Occur with proper orientation only
D.
Have energy ≥ Ea only
😑 View Answer Rough Work Error
ANSWER :
A. Have energy ≥ Ea AND occur with proper orientation
11.
The collision frequency Z_AB is proportional to:
A.
Square of temperature (T²)
B.
Temperature (T)
C.
Square root of temperature (√T)
D.
Inverse of temperature (1/T)
😑 View Answer Rough Work Error
ANSWER :
C. Square root of temperature (√T)
12.
Which factor has the greatest effect on reaction rate as temperature increases?
A.
The exponential factor e^(-Ea/RT)
B.
The molecular mass
C.
The steric factor P
D.
The collision frequency Z_AB
😑 View Answer Rough Work Error
ANSWER :
A. The exponential factor e^(-Ea/RT)