| 1 |
Sum of pKa and pKb is equal to. |
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| 2 |
The pH of human blood is |
- A. 7.0
- B. 7.4
- C. 4.0
- D. 6.5
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| 3 |
A chemical reaction A ---------- B is said to be in equilibrium when |
- A. Complete conversion of A to B has taken place
- B. Conversion of A to B is 50% complete
- C. Rate of transformation of A to B is equal to B to A
- D. 50% Reactant have been changed to B
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| 4 |
Optimum pressure in Haber's process for synthesis of Ammonia is |
- A. 100 -150 atm
- B. 200- 300 atm
- C. 350 - 450 atm
- D. 500 - 600 atm
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| 5 |
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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| 6 |
A solution will be unsaturated if |
- A. Ionic product = Kap
- B. Ionic product < Ksp
- C. Ionic Product > Ksp
- D. both 'a' and 'b' are correct
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| 7 |
The sum of pH and pOH is |
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| 8 |
When HCl is added to H2S aqueous solution, Its ionization |
- A. Decrease
- B. Increase
- C. Remains constant
- D. First increases than decreases
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| 9 |
The unit of equilibrium constant K<sub>c</sub>for the reaction |
- A. dm<sup>+6</sup>mole<sup>-2</sup>
- B. mole<sup>2</sup>dm<sup>-6</sup>
- C. Mole dm<sup>-3</sup>
- D. Having no units
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| 10 |
When concentration of one product is removed at equilibrium stage, in which direction it moves to reestablish equilibrium. |
- A. Forward
- B. Reverse
- C. Neither forward nor reverse
- D. Equally move in both direction
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