2nd Year Chemistry 3rd Quarter Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. Hydrolysis of condensed polymers can occur under:
   1. Neutral only
   2. Acidic or basic
   3. Enzymatic only
   4. High pressure only
2. Optimum temperature for human enzymes is about:
   1. 0°C
   2. 25°C
   3. 37°C
   4. 60°C
3. The abundance of M+1 peak depends mainly on:
   1. Hydrogen atoms
   2. Oxygen atoms
   3. Carbon atoms
   4. Nitrogen atoms
4. Which database was used to screen molecules when discovering Halicin?
   1. PubChem
   2. DrugBank
   3. ZINC15
   4. ChemSpider
5. Spectroscopy is based on the interaction of atoms or molecules with:
   1. Heat
   2. Sound waves
   3. Electromagnetic radiations
   4. Chemical reactions
6. Two peaks in the chlorine mass spectrum show that:
   1. Chlorine has one isotope
   2. Chlorine has two isotopes
   3. Chlorine is monoisotopic
   4. Chlorine is a mixture with hydrogen
7. Which of the following is a polyester?
   1. Kevlar
   2. Nylon-6,6
   3. Terylene
   4. PVC
8. Fructose is classified as:
   1. Aldohexose
   2. Ketohexose
   3. Aldopentose
   4. Ketopentose
9. The slope of a graph (tan θ) can represent:
   1. Volume of gas
   2. Concentration of solution
   3. Physical quantities
   4. Calibration error
10. What is the primary function of AI in drug discovery as exemplified by the discovery of Halicin?
    1. Manufacturing drugs
    2. Predicting biological activity and toxicity
    3. Performing virtual screening
    4. Both B and C
11. The property that makes nuclei NMR active is called:
    1. Isotopic mass
    2. Spin
    3. Charge density
    4. Energy difference
12. The isotope boron-11 has a relative abundance of:
    1. 0.199
    2. 0.11
    3. 0.801
    4. 0.9