| 1 |
Velocity constant is the rate of reaction when the concentrations of reactants are |
- A. Zero
- B. Unity
- C. Two
- D. Three
|
| 2 |
Chemical reactivity of different substance is controlled by |
- A. Atomic number
- B. Electronic arrangement
- C. Mass number
- D. Number of isotope of reactant elements
|
| 3 |
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
|
| 4 |
The rate of reaction |
- A. Increases as the reaction proceeds
- B. Decreases as the reaction proceeds
- C. Remains the same as the reaction proceeds
- D. May decrease or increase as the reaction proceeds
|
| 5 |
Dilatometer method is useful for the reactions that involve. |
- A. Ionic species
- B. Where reactant absorb U.V. visible or infrared radiations
- C. Small volume changes in solutions
- D. Change in refractive indices
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| 6 |
Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is. |
|
| 7 |
The power of which the concentration of a substance appears in the rate expression is known as |
- A. order of reaction with respect to that substance
- B. Rate of reaction
- C. Order of reaction
- D. Molecularity of reaction
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| 8 |
The unit of rate constant depends upon |
- A. Number of reactants
- B. Concentration terms
- C. Order of reaction
- D. Molecularity of reaction
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| 9 |
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
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| 10 |
The influence of temperature on reaction rate is predicated by |
- A. Free energy change of reaction
- B. Arrhenius equation
- C. Van der weal's equation
- D. Kinetic equation
|