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Federal (FBISE) · Chapter test · Free

9th Class Chemistry Chapter 16 Test16. Empirical Data Collection and Analysis

28 marks · 40 minutes · 19 questions. Covers: 16. Empirical Data Collection and Analysis.

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9th Class Chemistry Chapter 16 Test

9th Class · Chemistry · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 28Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 8 × 1 = 8)

  1. Standard form of 38000000000 is:
    1. 3.8×10⁸
    2. 3.8×10⁹
    3. 3.8×10¹²
    4. 3.8×10¹⁰
  2. 1 kilometer means:
    1. 100 m
    2. 1000 cm
    3. 1000 cm
    4. 1000 m
  3. Volume of liquid in cylinder is:
    1. 23
    2. 24
    3. 25
    4. 22
  4. SI unit of mass is:
    1. kilogram
    2. centimetre
    3. kelvin
    4. millimetre
  5. SI units are changed by factors of ten using:
    1. Prefixes
    2. Symbols
    3. Abbreviation
    4. Ratio
  6. Standard form of 0.00000000034 is:
    1. 3.4×10⁻⁸
    2. 3.4×10⁻⁹
    3. 3.4×10⁻¹⁰
    4. 3.4×10⁻¹¹
  7. Instrument giving value close to actual is:
    1. Sensitivity
    2. Accuracy
    3. Precision
    4. Repeatability
  8. One nanometer equals:
    1. 10⁻¹⁰ m
    2. 10⁻⁹ m
    3. 10⁻⁸ m
    4. 10⁻⁷ m

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

  1. What is system international? Why SI units are standardized for better communication and collaboration.
  2. What are the advatanges of using scientific tools like measuring cylinders, stopwatch and thermometers in measurements?
  3. What is the use of prefixes in measurements?
  4. A chemist has sample of mass 0.003 kilograms. How will he convert this mass to milligrams?
  5. Which gas turns starch iodide paper blue-black?
    1. ammonia
    2. carbon dioxide
    3. chlorine gas
    4. oxygen gas
  6. What is measring cylinder?
  7. Differentiate between accuracy and precision.
  8. Write down the advantages and disadvantages of experimental methods?

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

  1. Write down scientific notation?
  2. Why do scientific realize the need for a standardized system of measurement?
  3. Evaluate how tools for measurements are helpful in performing scientific techniques.