| 1 |
the rate of reaction when concentration of reactants are taken unity is called. |
- A. Average rate
- B. Instantaneous rate
- C. Specific rate
- D. Rate equation
|
| 2 |
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
|
| 3 |
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
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| 4 |
The rate of reaction determined at any given time is called. |
- A. Average rate
- B. Instantaneous rate
- C. Spontaneous rate
- D. Over all rate
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| 5 |
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
|
| 6 |
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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| 7 |
Which properties of liquid is measured by polarimeter |
- A. Conductance
- B. Refractive index
- C. Optical activity
- D. Change in volume
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| 8 |
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
|
| 9 |
The rate of reaction |
- A. Increases
- B. Decreases
- C. Remains the same
- D. May decrease of increase
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| 10 |
The quantitative relationship between rate and concentration is given by. |
- A. Law of mass action
- B. Rate law
- C. Both of these
- D. Le Chatelier's principle
|