| 1 |
If Qc > Kc the reaction will be in |
- A. Chemical equilibrium
- B. Static equilibrium
- C. Reverse reaction
- D. Forward reaction
|
| 2 |
The reactions in which products can recombine to form reactants is called. |
- A. Irreversible reactions
- B. Reversible reactions
- C. Direct reactions
- D. Indirect reactions
|
| 3 |
When the magnitude of Kc is very large in indicates. |
- A. Reaction never go to completion
- B. Reaction is in equilibrium state
- C. Reaction will complete after some time
- D. Reaction has almost to completion
|
| 4 |
Which gas is used to prepare ammonia? |
- A. N<sub>2</sub>
- B. O<sub>2</sub>
- C. Cl<sub>2</sub>
- D. S
|
| 5 |
The lives of aquatic plants and animals are indirectly related to concentration of dissolved ------ in water: |
- A. hydrogen
- B. oxygen
- C. chlorine
- D. nitrogen
|
| 6 |
The % age of nitrogen and oxygen in our atmosphere is: |
|
| 7 |
Which types of reaction speed up gradually? |
- A. Irreversible reactions
- B. Reversibel reactions
- C. Forward reactions
- D. Decomposition reactions.
|
| 8 |
When the numbers of moles of both sides are equal in a reaction, then the unit of K<sub>c</sub> will be: |
- A. No unit
- B. mol<sup>-2</sup> dm<sup>6</sup>
- C. mol dm<sup>3</sup>
- D. mol<sup>-2 </sup>dm
|
| 9 |
The major components of Atmosphere are: |
- A. Carbon and Nitrogen
- B. Nitrogen and Oxygen
- C. Oxygen and Chlorine
- D. None of these
|
| 10 |
At dynamic equilibrium: |
- A. The reactions stops to proceed
- B. The amounts of reactants and products are equal
- C. The speed of the forward is reverse reactions are equal
- D. The reaction can no longer be reversed
|
