MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If pH of solution of NaOH is 12.0 the pH of H2 SO4 solution of same molarity will be? |
| A. | 2.0 |
| B. | 12.0 |
| C. | 1.7 |
| D. | 10.0387 |
| Answer» D. 10.0387 | |
| 2. |
Aqueous solution of the detergents are _________ |
| A. | Neutral |
| B. | Acidic |
| C. | Basic |
| D. | Amphoteric |
| Answer» D. Amphoteric | |
| 3. |
If pKb for fluoride at 25 c is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is? |
| A. | 3.52 10<sup>-3</sup> |
| B. | 6.75 10<sup>-4</sup> |
| C. | 5.38 10<sup>-2</sup> |
| D. | 1.74 10<sup>-5</sup> |
| Answer» C. 5.38 10<sup>-2</sup> | |
| 4. |
K1 and K2 for oxalic acid are 6.5 10-2and 6.1 10-5respectively. What will be the [OH ] in a 0.01M solution of sodium oxalate? |
| A. | 9.6 10<sup>-6</sup> |
| B. | 1.4 10<sup>-1</sup> |
| C. | 1.2 10<sup>-6</sup> |
| D. | 1.3 10<sup>-8</sup> |
| Answer» D. 1.3 10<sup>-8</sup> | |
| 5. |
The hydrolysis constant of CH3COONa is given by ____________ |
| A. | K<sub>h</sub> = K<sub>w</sub>/K<sub>a</sub> |
| B. | K<sub>h</sub> = K<sub>w</sub>/K<sub>b</sub> |
| C. | K<sub>h</sub> = K<sub>w</sub>/K<sub>a</sub> K<sub>b</sub> |
| D. | K<sub>h</sub> = K<sub>a</sub> + K<sub>b</sub> |
| Answer» B. K<sub>h</sub> = K<sub>w</sub>/K<sub>b</sub> | |
| 6. |
The degree of ionization does not depend on? |
| A. | Temperature |
| B. | Current |
| C. | Nature of solvent |
| D. | Concentration |
| Answer» C. Nature of solvent | |
| 7. |
Which of the following bases has the highest pKa value? |
| A. | NaOH |
| B. | NaNO<sub>3</sub> |
| C. | KNO<sub>3</sub> |
| D. | KCl |
| Answer» B. NaNO<sub>3</sub> | |
| 8. |
Which of the following acids has the lowest pKa value? |
| A. | Acetic acid |
| B. | Sulphuric acid |
| C. | Dil.HCl |
| D. | Oxalic acid |
| Answer» C. Dil.HCl | |
| 9. |
Identify the triprotic acid from the following. |
| A. | Carbonic acid |
| B. | Bicarbonate |
| C. | Glycine |
| D. | Phosphoric acid |
| Answer» E. | |
| 10. |
What is the concentration of OH in a solution with a H+ concentration of 1.3 10-4 M? |
| A. | 7.7 10<sup>-10</sup> M |
| B. | 7.7 10<sup>-9</sup> M |
| C. | 7.7 10<sup>-11</sup> M |
| D. | 7.7 10<sup>-12</sup> M |
| Answer» D. 7.7 10<sup>-12</sup> M | |