| 1 |
If the volumes of reactants and products are same in a gaseous phase reaction, then the equilibrium state is not affected by |
- A. Change of temperature
- B. Change of pressure
- C. Change of concentration
- D. Catalyst
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| 2 |
Which statement about the following equilibrium is correct |
- A. The value of K<sub>p</sub>falls with a rise in temperature
- B. The value of K<sub>p</sub>falls with increasing pressure
- C. Adding V<sub>2</sub>O<sub>5</sub>catalyst increase the equilibrium yield of sulphur trioxide
- D. The value of K<sub>p</sub>is equal to K<sub>c</sub>
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| 3 |
the substance which increase the rate of reaction but remains unchanged at the end of the reaction is called. |
- A. Indicator
- B. Promoter
- C. Catalyst
- D. Activated complex
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| 4 |
When solid KI dissolved in water, its heat of solution is positive. What would happen to dissolution when temperature is increased. |
- A. Increases
- B. Decreases
- C. Remain same
- D. Firs increases than decreases
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| 5 |
A solution has pH zero. Its H+ ions concertation will |
- A. zero
- B. More than unity
- C. Less than unity
- D. Unity only
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| 6 |
Which one of the following aqueous solutions has the highest pH |
- A. 0.1 M NaOH
- B. 0.1 M HCl
- C. 0.2 M H2SO4
- D. 0.1 M HNO3
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| 7 |
The pH of 10-3 mole dm-3 of an aqueous solution of H2SO4 is. |
- A. 3.0
- B. 2.7
- C. 2.0
- D. 1.5
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| 8 |
At equilibrium stage of chemical reaction |
- A. The concentration of reaction is equal to concentration of products
- B. The rate constant of forward reaction is equal to rate constant of backward reaction
- C. The rate of forward reaction is equal rate of backward reaction
- D. The energy of activation of forward step is equal to energy of activation of backward step
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| 9 |
pH of buffer is calculated by. |
- A. Sorenson equation
- B. Mosley equation
- C. Henderson equation
- D. De broglie equation
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| 10 |
For which system does the equilibrium constant K<sub>c</sub>has units of (concentration)<sup>-1</sup> |
|