| 1 |
The rate of reaction |
- A. Increase as the reaction proceeds
- B. Decreases as the reaction proceeds
- C. Remains the same as the reactions proceeds
- D. May decrease or increase as the reaction proceeds
|
| 2 |
With increases of 10 oC temperature the rate of reaction doubles. This increase in rate of reactions is due to. |
- A. Decrease in activation energy of reaction
- B. Decrease in the number of collisions between reactant molecules
- C. Increase in activation energy of reactants
- D. Increase in number of effective collisions
|
| 3 |
Photosynthesis a photochemical reaction has order of reaction |
- A. 0
- B. 1
- C. 2
- D. Fractional order
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| 4 |
In zero order reaction, the rate is independent of |
- A. Temperature of reaction
- B. Concentration of reactants
- C. Concentration of products
- D. None of these
|
| 5 |
|
- A. 1
- B. 2
- C. 3
- D. None of these
|
| 6 |
After 3 half lives of a chemical reaction, the % fraction of the amount left is |
- A. 6.25
- B. 75
- C. 12.5
- D. 50
|
| 7 |
When a reaction occurs in many steps than the slowest step is. |
- A. Mechanism step
- B. Rate determining step
- C. enthalpy determining step
- D. None of the above
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| 8 |
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
|
| 9 |
A type of meals are usually used as catalyst. |
- A. Coinage metal
- B. Alkali metals
- C. Transition metals
- D. alkaline earth metals
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| 10 |
The unit of rate constant is the same as that of the rate of reaction is. |
- A. First order reaction
- B. Second order reaction
- C. Zero order reaction
- D. Third order reaction
|