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Federal (FBISE) · Chapter test · Free

2nd Year Chemistry Chapter 20 Test20. Materials

30 marks · 40 minutes · 21 questions. Covers: 20. Materials.

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2nd Year Chemistry Chapter 20 Test

2nd Year · Chemistry · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Which of the following is one of the strongest materials known?
    1. Silver
    2. Graphene
    3. Diamond
    4. Plastic
  2. X-ray crystallography helps in identifying potential binding sites for:
    1. Metals
    2. New drugs
    3. Minerals
    4. Plastics
  3. Which physical property can be explained by studying the arrangement of atoms in solids?
    1. Conductivity
    2. Magnetism
    3. Optical properties
    4. All of these
  4. Which of the following metals can occur native (pure) in nature?
    1. Sodium
    2. Calcium
    3. Magnesium
    4. Gold
  5. Which molecules were analyzed using X-ray crystallography?
    1. Insulin
    2. Penicillin
    3. Vitamin B12
    4. All of these
  6. Recycling processes can sometimes generate:
    1. Oxygen
    2. Hazardous emissions and by-products
    3. Fertilizers
    4. Harmless gases only
  7. Which of the following is an example of a crystal studied by X-ray crystallography?
    1. Glass
    2. Salt
    3. Wood
    4. Plastic
  8. Which property of material determines how well it can conduct electricity?
    1. Flexibility
    2. Strength
    3. Electrical conductivity
    4. Color
  9. What happens when non-recyclable materials mix with recyclables?
    1. Recycling becomes easier
    2. Recycling becomes safer
    3. Pollution occurs
    4. Cost decreases
  10. Which field benefits from structural determination of nanoparticles?
    1. Astronomy
    2. Nanotechnology
    3. Geology
    4. Agriculture

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Give an example of an alloy and its components.
  2. Name four common examples of everyday materials.
  3. Name two uses of ceramics in daily life.
  4. Why is separating recyclable from non-recyclable waste difficult?
  5. How does X-ray crystallography help in drug development?
  6. What physical properties can be explained by studying crystal structures?
  7. Define alloy and give one example.
  8. Write one example of roasting with reaction.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Write a detailed note on how X-ray crystallography helps in understanding proteins, DNA, and RNA.
  2. Discuss the factors that affect the selection of materials for different applications.
  3. Explain roasting and smelting processes with chemical equations.