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Federal (FBISE) · Half book test · Free

9th Class General Science Second half Book Paper

50 marks · 1 hour 30 minutes · 35 questions. Covers: 5 chapters (06. Energy Resources to 10. Heat).

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9th Class General Science Second half Book Paper

9th Class · General Science · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 50Time: 1 hour 30 minutes

Q1. Multiple choice questions (Attempt all · 15 × 1 = 15)

  1. One litre of water is cooled from 4°C to 0C, its volume:
    1. decreases then increases
    2. remains same
    3. increases
    4. decreases
  2. Which is NOT naturally occurring greenhouse gas?
    1. Nitrous oxide
    2. Methane
    3. Carbon dioxide
    4. Ethane
  3. Which of the following produces least friction?
    1. Sliding friction
    2. Rolling friction
    3. Static friction
    4. Kinetic friction
  4. The least count of analog stopwatch is:
    1. 0.01 s
    2. 0.1 s
    3. 1 s
    4. 10 s
  5. Melting point of oxygen is:
    1. -200
    2. -219
    3. -112
    4. -77
  6. Glue is an example of _______ solid:
    1. crystalline
    2. amorphous
    3. liquid-solid
    4. ductile
  7. Burning of fossil fuels results in:
    1. Increased oxygen level
    2. Decreases greenhouse gases
    3. Increased greenhouse gases
    4. Increased ethane level
  8. The weight of an object at the Moon’s surface is _______ of the weight on Earth.
    1. 46028
    2. 46027
    3. 46025
    4. 46024
  9. Which of the following is not a derived unit?
    1. pascal
    2. newton
    3. kelvin
    4. joule
  10. The temperature of 15°C is equal to:
    1. 15°F
    2. 51°F
    3. 59°F
    4. 100°F
  11. What type of intermolecular forces holds liquid N₂ together?
    1. ionic bond
    2. London dispersion force
    3. hydrogen bond
    4. dipole-dipole force
  12. Which of the following greenhouse gases is present in very high quantities?
    1. Carbon dioxide
    2. Ethane
    3. Propane
    4. Methane
  13. As a fielder you roll a ball in the cricket ground, it stops before reaching the bowler due to:
    1. energy
    2. temperature
    3. pressure
    4. friction
  14. The unit of weight in terms of base units is:
    1. kg m s⁻²
    2. kg m⁻¹ s⁻²
    3. kg m s⁻¹
    4. kg m⁻¹ s⁻¹
  15. The melting point of water is as that of:
    1. boiling point
    2. freezing point
    3. condensation
    4. sublimation

Q2. Short questions (Attempt any 10 of 15 · 10 × 2 = 20)

  1. What is the magnitude of the gravitational force at the Earth’s centre? Justify your answer.
  2. List the end products of photosynthesis.
  3. When you sit by a campfire how does its hot air heats you? Explain.
  4. Why lighter gasses diffuse more rapidly than heavier gasses?
  5. Round off the following numbers up to three significant digits: a)4.527 b) 12.832
  6. A diesel engine has efficiency 35%. What does it mean?
  7. Identify the part of the leaf where photosynthesis primarily occurs.
  8. On a cold winter morning, why does the metal of bike feels colder than the wooden handle of the door?
  9. Ice occupies more space than water. Give reason.
  10. What precautions should be taken for taking length measurement using meter rule? Elaborate those precautions.
  11. Why the ups and down are engraved on the tyres of your car? Explain.
  12. Identify the type of pollution responsible for smog.
  13. Why you use sealing in the house? Give your answer in terms of heat and temperature.
  14. How the vapour pressure, boiling point and freezing point of water can be elevated?
  15. Find the result of given operations of numbers up to correct number of significant figures: 45.2 × 8.6

Q3. Long questions (Attempt any 3 of 5 · 3 × 5 = 15)

  1. Discuss the difference between base and derived physical quantities.
  2. Matter can be categorized in different states define and explain them.
  3. Compare the terms heat and the temperatures by explaining the similarities and differences between them.
  4. Define and explain efficiency. Also show that efficiency of any real machine can never be 100%.
  5. Analyze the relationship between the greenhouse effect and global warming and evaluate their impact on the environment.