| 1 |
Rate of a chemical reaction generally increase rapidly even for small increase in temperature because of rapid increase in the |
- A. Collisions frequency
- B. Activation energy
- C. Average KE of molecules
- D. Fraction of molecules with energies more than activation energy
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| 2 |
The unit of the rate constant is same as that of the rate of reaction in |
- A. First order reaction
- B. Second order reaction
- C. Zero order reaction
- D. Third order reaction
|
| 3 |
Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is. |
|
| 4 |
The reaction that involves gases, its rate does not depend upon |
- A. Catalyst
- B. Temperature
- C. Moles dm<sup>-3</sup>
- D. Partial pressure
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| 5 |
With increase in 10°C temperature, the rate of reaction double. This increase in rate of reaction is due to |
- A. Decrease in activation energy of reaction
- B. Decrease in the number of collisions between reactant molecules
- C. Increases in activation energy of reactants
- D. Increase in number of effect collisions
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| 6 |
Which statement is incorrect about order of reaction |
- A. It cannot be determined experimentally
- B. It is determined experimentally
- C. Sum of exponents in rate equation
- D. It can have fraction value
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| 7 |
Velocity constant is the rate of reaction when the concentrations of reactants are |
- A. Zero
- B. Unity
- C. Two
- D. Three
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| 8 |
When a reaction proceeds in a sequence of steps, the overall rate is determined by |
- A. Fastest step
- B. Slowest step
- C. Order of different steps
- D. Molecularity of all steps
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| 9 |
Photosynthesis a photochemical reaction has order of reaction |
- A. 0
- B. 1
- C. 2
- D. Fractional order
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| 10 |
The unit of the rate constant is the same as that of the rate of reaction in |
- A. First order reaction
- B. Second order reaction
- C. Zero order reaction
- D. Third order reaction
|