Entry Test MCQ :: Reaction Kinetics
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1. |
The rate of reaction |
A. |
Increases as the reaction proceeds |
B. |
Decreases as the reaction proceeds |
C. |
Remains the same as the reaction proceeds |
D. |
May decrease or increase as the reaction proceeds |
Answer: Option B
Explanation:
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2. |
The addition of a catalyst to the reaction system |
A. |
Increases the rate of forward reaction only |
B. |
Increases the rate of reverse reaction |
C. |
Increases the rate of forward but decreases the rate of backward reaction |
D. |
Increases the rate of forward as well as backward reaction equally |
Answer: Option D
Explanation:
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3. |
The specific rate constant of a first order reaction depends on the |
A. |
Time |
B. |
Concentration of the reactant |
C. |
Temperature |
D. |
Concentration of the product |
Answer: Option C
Explanation:
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4. |
On increasing the temperature the rate of reaction increases mainly because |
A. |
The activation energy of the reaction increases |
B. |
Concentration of the reacting molecules increases |
C. |
Collision frequency increases |
D. |
None of these |
Answer: Option C
Explanation:
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5. |
?d[N2O5]/dt represents |
A. |
Rate of formation of N2O5 |
B. |
Rate of decomposition of N2O5 |
C. |
order of the reaction |
D. |
none |
Answer: Option B
Explanation:
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6. |
The value of activation energy is primarily determined by |
A. |
Temperature |
B. |
Effective collision |
C. |
Concentration of reactants |
D. |
Chemical nature of reactants and products |
Answer: Option B
Explanation:
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7. |
Sum of exponents of molar concentration is called |
A. |
Order of reaction |
B. |
Molecularity |
C. |
Rate of reaction |
D. |
Average of reaction |
Answer: Option A
Explanation:
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8. |
Spontaneous reactions are |
A. |
Moderate |
B. |
Slow |
C. |
Fast |
D. |
not natural |
Answer: Option C
Explanation:
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9. |
In rate expression the concentration of reactants is negative. It shows |
A. |
Concentration of reactant does not change |
B. |
Concentration of product increases |
C. |
Concentration of reactant decreases |
D. |
Concentration of reactant increases |
Answer: Option C
Explanation:
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10. |
Unit of rate of reaction is |
A. |
Moles dm-3 sec-1 |
B. |
Moles dm-3 |
C. |
Moles sec-1 |
D. |
Mol-1 dm3 sec-1 |
Answer: Option A
Explanation:
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