| 1 |
All radio active disintegration nuclear reaction are of. |
- A. First order
- B. Zero order
- C. 2nd order
- D. Third order
|
| 2 |
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
|
| 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
|
| 4 |
|
- A. 1
- B. 2
- C. 3
- D. None of these
|
| 5 |
The rate of reaction determined at any given time is called. |
- A. Average rate
- B. Instantaneous rate
- C. Spontaneous rate
- D. Over all rate
|
| 6 |
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
|
| 7 |
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
|
| 8 |
The reaction that involves gases, its rate does not depend upon |
- A. Catalyst
- B. Temperature
- C. Moles dm<sup>-3</sup>
- D. Partial pressure
|
| 9 |
Which properties of liquid is measured by polarimeter |
- A. Conductance
- B. Refractive index
- C. Optical activity
- D. Change in volume
|
| 10 |
A substance which itself is not a catalyst but increases the activity of a catalyst is called. |
- A. Promoter
- B. Poisoner
- C. Inhibitor
- D. Enzyme
|