MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry Questions and Answers 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. |
If pKb for fluoride at 25°c is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is? |
| A. | 3.52×10-3 |
| B. | 6.75×10-4 |
| C. | 5.38×10-2 |
| D. | 1.74×10-5 |
| Answer» C. 5.38×10-2 | |
| 3. |
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. | 9.6×10-6 |
| B. | 1.4×10-1 |
| C. | 1.2×10-6 |
| D. | 1.3×10-8 |
| Answer» D. 1.3×10-8 | |
| 4. |
The hydrolysis constant of CH3COONa is given by ____________ |
| A. | Kh = Kw/Ka |
| B. | Kh = Kw/Kb |
| C. | Kh = Kw/Ka×Kb |
| D. | Kh = Ka + Kb |
| Answer» B. Kh = Kw/Kb | |
| 5. |
Which of the following bases has the highest pKa value? |
| A. | NaOH |
| B. | NaNO3 |
| C. | KNO3 |
| D. | KCl |
| Answer» B. NaNO3 | |
| 6. |
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 | |
| 7. |
What is the concentration of OH– in a solution with a H+ concentration of 1.3×10-4 M? |
| A. | 7.7×10-10 M |
| B. | 7.7×10-9 M |
| C. | 7.7×10-11 M |
| D. | 7.7×10-12 M |
| Answer» D. 7.7×10-12 M | |