MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is an isotonic solution? |
| A. | 0.9% sodium chloride |
| B. | 0.45% sodium chloride |
| C. | Oceans |
| D. | 10% dextrose in water |
| Answer» B. 0.45% sodium chloride | |
| 2. |
Which of the following is a hypotonic solution? |
| A. | 10% dextrose in water |
| B. | 0.45% sodium chloride |
| C. | 5% dextrose in 0.9% sodium chloride |
| D. | Oceans |
| Answer» C. 5% dextrose in 0.9% sodium chloride | |
| 3. |
The bond dissociation energy of O-H bond in a water molecule is _____________ |
| A. | 23 kJ/mole |
| B. | 470 kJ/mole |
| C. | 470 J/mole |
| D. | 23 J/mole |
| Answer» C. 470 J/mole | |
| 4. |
The bond dissociation energy of hydrogen bonds in a water molecule is ______________ |
| A. | 470 kJ/mole |
| B. | 470 J/mole |
| C. | 23 kJ/mole |
| D. | 23 J/mole |
| Answer» D. 23 J/mole | |
| 5. |
What is the heat of vaporization of water? |
| A. | 2260 J/g |
| B. | 2260 kJ/g |
| C. | 1260 J/g |
| D. | 1260 kJ/g |
| Answer» B. 2260 kJ/g | |
| 6. |
ΔH is positive for which of the following processes? |
| A. | Oxidation of nitrogen |
| B. | Melting of ice and evaporation of water |
| C. | Oxidation of gold |
| D. | Burning of chlorine |
| Answer» C. Oxidation of gold | |
| 7. |
ΔG is negative for which of the following processes? |
| A. | Melting of ice and evaporation of water |
| B. | Oxidation of nitrogen |
| C. | Oxidation of gold |
| D. | Burning of chlorine |
| Answer» B. Oxidation of nitrogen | |
| 8. |
WHICH_OF_THE_FOLLOWING_IS_A_HYPOTONIC_SOLUTION??$ |
| A. | 10% dextrose in water |
| B. | 0.45% sodium chloride |
| C. | 5% dextrose in 0.9% sodium chloride |
| D. | Oceans |
| Answer» C. 5% dextrose in 0.9% sodium chloride | |
| 9. |
Which_of_the_following_is_an_isotonic_solution?$ |
| A. | 0.9% sodium chloride |
| B. | 0.45% sodium chloride |
| C. | Oceans |
| D. | 10% dextrose in water |
| Answer» B. 0.45% sodium chloride | |
| 10. |
Which of the following is a hypertonic solution? |
| A. | Oceans |
| B. | Freshwater habitats |
| C. | 0.45% sodium chloride |
| D. | Red blood cells placed in fresh water |
| Answer» B. Freshwater habitats | |
| 11. |
The bond dissociation energy of O-H bond in a water molecule is |
| A. | 23 kJ/mole |
| B. | 470 kJ/mole |
| C. | 470 J/mole |
| D. | 23 J/mole |
| Answer» C. 470 J/mole | |
| 12. |
The bond dissociation energy of hydrogen bonds in a water molecule is |
| A. | 470 kJ/mole |
| B. | 470 J/mole |
| C. | 23 kJ/mole |
| D. | 23 J/mole |
| Answer» D. 23 J/mole | |
| 13. |
Heat of vaporization of water is |
| A. | 2260 J/g |
| B. | 2260 kJ/g |
| C. | 1260 J/g |
| D. | 1260 kJ/g |
| Answer» B. 2260 kJ/g | |
| 14. |
What is the factor that is responsible for salts like NaCl to dissolve in water easily? |
| A. | Decrease in entropy |
| B. | Increase in entropy |
| C. | Increase in enthalpy |
| D. | Decrease in enthalpy |
| Answer» C. Increase in enthalpy | |
| 15. |
ΔG is negative for which of the following processes?$ |
| A. | Melting of ice and evaporation of water |
| B. | Oxidation of nitrogen |
| C. | Oxidation of gold |
| D. | Burning of chlorine |
| Answer» B. Oxidation of nitrogen | |
| 16. |
What makes water a liquid at room temperature? |
| A. | Hydrogen bonds between water molecules |
| B. | Covalent bonding |
| C. | Noncovalent interactions |
| D. | Van der Waals forces of attraction |
| Answer» B. Covalent bonding | |