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In the presence of a catalyst, the heat ...

In the presence of a catalyst, the heat evolved or absorbed during the reaction:

A

increases

B

decreases

C

remains unchanged

D

may increase or decrease.

Text Solution

Verified by Experts

The correct Answer is:
C
remains unchanged
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ICSE-CHEMICAL KINETICS-EXERCISE (PART- I (OBJECTIVE QUESRTIONS)B.COMPLE THE FOLLOWING STATEMENTS BY SELECTING THE CORRECT ALTERNATIVE FROM THE CHOICES GIVEN )
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  2. The role of a catalyst is to change

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  3. In the presence of a catalyst, the heat evolved or absorbed during the...

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  4. Activation energy of a chemical reaction can be determined by

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  5. Consider the given figure and mark the correct option.

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  6. Consider a first order gas phase decomposition reaction given below: ...

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  7. According to Arrhenius equation, rate constant k is equal to A e^(- Ea...

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  8. Consider the Arrhenius equation given below and mark the correct op...

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  9. A graph of volume of hydrogen released vs time for the reaction betwee...

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  10. Which of the following statements is not correct about order of a reac...

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  11. Consider the graph given in figure . Which of the following optio...

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  12. Which of the following statement is correct?

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  13. Which of the following expressions is correct for the rate of reaction...

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  14. Which of the following graphs represents exothermic reaction ?

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  15. Rate law for the reaction A + 2B to C is found to be Rate =k[A][B] Con...

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  16. Which of the following statements is incorrect about the collison theo...

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  17. A first order reaction is 50% completed in 1.26 xx 10^(14)s. How much ...

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  18. Compounds 'A' and 'B' react according to the following chemical eq...

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  19. Which of the following statements is not correct for the catalyst ?

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  20. The value of rate constant of a pseudo first order reaction

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