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13. One DNA strand is attached to another DNA strand by a. hydrogen bonds between the sugars. b. covalent bonds between the sugars and bases. c. covalent bonds between the […]

12. Which monomer can form both polymers below: The monomer that can form both of the given polymers is the structure shown in figure d. Question overview The question asks: “Which monomer […]

11. Which of the following statements are true? a. Vmax of an enzyme remains constant with increasing enzyme concentrations. b. KM of an enzyme for a substrate remains constant with […]

10. If 1.14 Kg of octane are burned in the complete combustion reaction shown below, how many Kg of carbon dioxide will be produced (atomic mass of C, O and […]

9. How many chiral centres does this molecule below have: a. 2 b. 7 c. 8 d. 9 Introduction Exam questions like “How many chiral centres does this molecule below have?” frequently […]

8. In the below hydropathy plot of a protein, positive values are regions of the protein that are considered hydrophobic based on primary amino acid sequence. What type of protein […]

7. At 25 °C and zero ionic strength, water self-dissociation results in: Kw = [H3O+][OH-] = 1.0×10−14 If it is known that Kw increases with increasing temperature, what will be […]

6. Using the bond energy data given in the parenthesis, what would be the expected enthalpy for the following reaction H2(g) + F2 (g) à 2HF (g) (H-H: 432 kJ/mol; […]

5. 8.4 mg NaHCO3 powder was slowly added to 10 ml 0.03 M HCl in a 50ml beaker with stirring. After all effervescence has seized, what should be the pH […]

4. CH3CHO and C6H5CH2CHO can be distinguished chemically by: a. Tollen’s reagent test b. Fehling solution test c. Benedict test d. Iodoform test CH3CHO (acetaldehyde) and C6H5CH2CHO (phenylacetaldehyde) can be […]