| 1 |
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
|
| 2 |
Which one of the following statements is incorrect. |
- A. Enzymes are protein in nature
- B. Enzymes are catalyst
- C. Enzymes can catalyze any reaction
- D. Urease is an enzyme
|
| 3 |
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
|
| 4 |
Half life period for 235 U is<div> 92</div> |
- A. 710 million years
- B. 810 milion years
- C. 720 million years
- D. 820 million years
|
| 5 |
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
|
| 6 |
After 3 half life of a chemical reaction, amount of reactant un reactive will be. |
- A. 50%
- B. 25%
- C. 12.5%
- D. 6.25%
|
| 7 |
Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is. |
|
| 8 |
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
|
| 9 |
If the energy of the activated complex lies close to energy of reactants, it means that reaction is |
- A. Slow
- B. Fast
- C. Exothermic
- D. Endothermic
|
| 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
|