BSc Chemistry April 2025 Model Question Paper | MS University 2nd Semester

Answer ALL Questions

1. What is the approximate percentage of oxygen in the air? (a) 50%   (b) 40%   (c) 30%   (d) 20%
2. Which of the following is a waterborne disease? (a) anemia   (b) goitre   (c) cholera   (d) measles
3. Glass is a/an (a) amorphous solid   (b) crystalline solid   (c) semisolid   (d) vitreous solid
4. ___________ is prepared by the polymerisation of vinyl chloride in presence of benzoyl peroxide (a) Polyethylene   (b) MF resin   (c) PVC   (d) PET
5. Potassium salt of fatty acids is called (a) soft soap   (b) hard soap   (c) detergent   (d) surfactant
6. The main ingredient in nail polish is (a) calcium carbonate   (b) nitrocellulose   (c) sodium lauryl sulphate   (d) glucose
7. __________ is a micronutrient (a) oxygen   (b) nitrogen   (c) phosphorus   (d) sulphur
8. Which of the following is a solid fuel? (a) gasoline   (b) diesel   (c) kerosene   (d) coal
9. __________ is an example for narcotic analgesics (a) morphine   (b) paracetamol   (c) aspirin   (d) phenacetin
10. Which of the following is an azo dye? (a) Malachite green   (b) Methyl orange   (c) Phenolphthalein   (d) Indigo

Answer ALL Questions choosing either (a) or (b).
Answer should not exceed 250 words.

11. (a) Explain the process of photosynthesis.
    OR
    (b) What are the primary sources of water pollution?
12. (a) How is glass manufactured? Mention its uses.
    OR
    (b) Give the preparation and uses of polyester.
13. (a) Define protein. Explain its importance as food constituents.
    OR
    (b) Discuss the harmful effects of using cosmetic products.
14. (a) Write the preparation and uses of NPK fertilizers.
    OR
    (b) What are nuclear fuels? Give two examples.
15. (a) Differentiate between analgesics and antipyretics.
    OR
    (b) What are dyes? Explain its applications.

Answer ALL Questions choosing either (a) or (b).
Answer should not exceed 500 words.

16. (a) What are greenhouse gases? Describe its effects on the environment and human health.
    OR
    (b) Describe the methods of removal of hardness of water.
17. (a) What are ceramics? What are the raw materials used in the manufacture of ceramics?
    OR
    (b) Describe a method of preparation and any three uses of the following:
    i) Phenol formaldehyde resin
    ii) Melamine formaldehyde resin
18. (a) Define calorific value of food. What is its significance? Give the calorific value of carbohydrates, fats and proteins.
    OR
    (b) Outline the preparation and uses of the following:
    i) Tooth paste   ii) Shampoo
19. (a) Describe the role of nitrogen, phosphorus and potassium on plant growth.
    OR
    (b) Explain the preparation and uses of the following:
    i) Urea   ii) Superphosphate
20. (a) Write the preparation and uses of the following:
    i) Paracetamol   ii) Aspirin
    OR
    (b) What are explosives? How are they classified? Give two examples for each.