Chemical Engineering - Chemical Reaction Engineering
Exercise :: Chemical Reaction Engineering - Section 1
| 41. |
For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. |
| A. |
physical | | B. |
chemical | | C. |
both (a) and (b) | | D. |
neither (a) nor (b) |
Answer: Option B
Explanation:
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| 42. |
Pick out the correct statement. |
| A. |
In catalytic reactions, the catalyst reacts with the reactants. | | B. |
A catalyst initiates a chemical reaction. | | C. |
A catalyst lowers the activation energy of the reacting molecules. | | D. |
A catalyst can not be recovered chemi cally unchanged at the end of the chemical reaction. |
Answer: Option C
Explanation:
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| 43. |
The dimensions of rate constant for reaction 3A  B are (l/gm mole)/min. Therefore the reaction order is |
Answer: Option C
Explanation:
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| 44. |
Pick out the correct statement |
| A. |
Reactions with high activation energies are very temperature sensitive. | | B. |
Chemical equilibrium is a static state. | | C. |
A photochemical reaction is catalysed by light. | | D. |
A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction. |
Answer: Option A
Explanation:
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| 45. |
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is |
Answer: Option C
Explanation:
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