Reaction Kinetics MCQ's Test 2

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Reaction kinetics chapter 11 chemistry MCQ's for the preparation of entry test for UET, UHS, NUST, PIEAS, GIKI, FAST, AIR, other engineering universities and Medical colleges. These are also very helpful for annual examination for FSc.

1. Value of rate constant k is specific for a reaction, and varies from reaction to reaction. The value of k of a reaction changes with

A) time
B) temperature
C) concentration of reaction
D) order of reaction

2. The half life period of decomposition of N2O5 is

A) 20 times
B) 24 times
C) 30 times
D) 24 days

3. The unit of rate constant k for the second order reaction is

A) S-2
B) S2
C) dm3 mole-1 S-1
D) mole dm-3 S-1

4. In the graphical method of determining the rate of reaction chemically, a graph is plotted between the amount of reactant decomposed or product formed against the time. The rate dx/dt at any time is equal to

A) K
B) tangent ?
C) 1/a
D) 1/a2

5. If a reactant or product of a reaction absorbs radiation, then physical method for determining the rate of reaction is

A) Spectrometry
B) refractrometry
C) Conductivity
D) Optical rotation method

6. If there is volume change dimming reaction, then rate of this reaction is determined by

A) Dilatometric method
B) Spectrometry
C) Conductivity measurement
D) Optical rotation method

7. In the hydrolysis of ethyl acetate, the progress of reaction is determined by measuring the concentration of CH3COOH at definite time intervals by

A) Measuring PH
B) Measuing desnity
C) Titration against standard NaOH
D) Titration against standard KMnO4 solution

8. For a chemical reaction to take place the particles must have sufficient energy for the effective collisions, the energy is called

A) Average energy
B) Activation energy
C) Potential energy
D) Collision energy

9. Reactants reach the potential energy hill to form the products. This potential energy hill is called

A) Activated complex
B) Average energy
C) Instant aqueous energy state
D) Ionization engergy

10. 20. The reaction with zero activation energy will occur

A) Rapidly
B) Average energy
C) Instant aqueous energy state
D) Ionization energy