| 1 |
The rate of reverse reaction in the beginning. |
- A. Slow
- B. moderate
- C. Very fast
- D. Low
|
| 2 |
At equilibrium state there are possibilities: OR types of chemical equilibrium are. |
|
| 3 |
The reaction goes from left to right , if: |
- A. Qc = Kc
- B. Qc > kc
- C. Qc<Kc
- D. Qc = 0
|
| 4 |
When the magnitude of Kc is very small it indicates. |
- A. Equilibrium will never establish
- B. All reactants will be converted to products.
- C. Reaction will go to completion
- D. The amount of products is negligible
|
| 5 |
For which reaction Kf is the rate constant? |
- A. Forward reaction
- B. Backward reaction
- C. Upward reaction
- D. Downward reaction
|
| 6 |
When CaCO<sub>3,</sub>.is heated in an open flask, it decomposes to form calcium oxides and . |
- A. O<sub>2</sub>
- B. CO
- C. CO<sub>2</sub>
- D. CO<sub>3</sub>
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| 7 |
Reaction which have comparable amount of reactants and products at equilibrium state have. |
- A. Very small Kc value
- B. Very large Kc value
- C. Moderate Kc value
- D. None of these
|
| 8 |
If Qc < Kc the reaction goes in: |
- A. Forward
- B. Reverse
- C. At equilibrium state
- D. None
|
| 9 |
The value of equilibrium constant (Kc) depends only on: |
- A. temperature
- B. Pressure
- C. concentration
- D. density
|
| 10 |
Which type of reactions take place in both directions? |
- A. Addition reactions
- B. Reversible reactions
- C. Irreversibel reactions
- D. Decomposition reactions
|