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Rate of Reaction Questions and Answers. We covered all the Rate of Reaction Questions and Answers in this post for free so that you can practice well for the exam.
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MCQ on Rate of Reaction Question and Answers for Students
When the temperature of a chemical reaction is raised by 10°C, the reaction rate typically:
a. Remains unchanged
b. Becomes roughly two to three times faster
c. Drops by a factor of ten
d. None of the above
Option b – Becomes roughly two to three times faster
In a reversible reaction, the products can transform back into the reactants. Such a reaction:
a. Represents a state of equilibrium
b. Does not reflect equilibrium
c. Describes only the forward direction
d. Describes only the reverse direction
Option a – Represents a state of equilibrium
Which of the following affect the state of equilibrium in a chemical reaction?
a. Concentration and pressure
b. Temperature and catalyst
c. Both (a) and (b)
d. None
Option c – Both (a) and (b)
Reactions classified as moderate are typically completed within:
a. A few minutes
b. Several hours
c. Instantaneously
d. All of the above
Option b – Several hours
Which of the following is an example of a fast reaction?
a. Burning of magnesium
b. Formation of rust on iron
d. All of the above
Option a – Burning of magnesium
Fast reactions are completed:
a. Within hours
b. Over several days
c. Almost instantly
d. None
Option c – Almost instantly
Increasing the concentration of the reactants usually:
a. Has no effect on the reaction rate
b. Slows down the reaction
c. Speeds up the reaction
d. None of the above
Option c – Speeds up the reaction
A catalyst is best described as a substance:
a. That modifies the speed of a reaction
b. That starts a chemical reaction
c. That has no effect on the rate of reaction
d. None of the above
Option a – That modifies the speed of a reaction
We covered all the rate of reaction questions and answers above in this post for free so that you can practice well for the exam.
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