| 1 |
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
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| 2 |
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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| 3 |
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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| 4 |
Photosynthesis a photochemical reaction has order of reaction |
- A. 0
- B. 1
- C. 2
- D. Fractional order
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| 5 |
Unit of rate constant is the same as that of the rate of reaction in |
- A. 2nd order reaction
- B. 3rd order reaction
- C. Zero order reaction
- D. 1st order reaction
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| 6 |
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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| 7 |
Half -Life period of a first order reacting is independent of. |
- A. Initial concentration of the compound
- B. Conditions of temperature
- C. Presence of catalyst
- D. All the above
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| 8 |
All radio active disintegration nuclear reaction are of. |
- A. First order
- B. Zero order
- C. 2nd order
- D. Third order
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| 9 |
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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| 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
|