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Chapter No 10 :mcqs on Gaseous State (115 MCQ`S)

This chapter include mcqs on Gaseous State for the NEET exam, ECAT, MDCAT and public service commission exam, Physical chemistry questions and Answers with explanation Multiple Choice Questions on Properties of liquids, Gas law Multiple Choice Questions with answers

  1. Compressibility is the property of:
    1. gases
    2. liquids
    3. solids
    4. all of these
      5. Show Answer
      Answer: A
      Explanation:
      • Gases can be compressed due to presence of large empty spaces.
  2. The S.I unit of pressure is:
    1. atm
    2. torr
    3. Pascal (Pa)
    4. mmHg
      5. Show Answer
      Answer: C
      Explanation:
      • N/A
  3. 1 atm = ----------
    1. 760 cm Hg
    2. 1.013 x `10^5` Pa
    3. 7.14 psi
    4. 101325 KPa
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  4. Absolute degree is used for which scale of temperature?
    1. kelvin
    2. Fahrenheit
    3. Celcius
    4. all of these
      5. Show Answer
      Answer: A
      Explanation:
      • Kelvin scale is absolute scale.
  5. Charle's law is valid on which temperature scale?
    1. kelvin
    2. Fahrenheit
    3. Celcius
    4. all of these
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  6. At constant temperature, the pressure of a gas is reduced to one half, the volume:
    1. remains the same
    2. reduces to one half
    3. increases twice
    4. cannot be predicted
      5. Show Answer
      Answer: C
      Explanation:
      • Boyle's Law: P = `k/V`.
  7. At which temperature and pressure, ice , liquid water and water vapours can exist together?
    1. 25 °C and 1 atm
    2. 0 °C and 1 atm
    3. -2 °C and 76 mm
    4. 0 °C and 4.7 mm
      5. Show Answer
      Answer: D
      Explanation:
      • N/A
  8. The kinetic energy of the molecules is highest in:
    1. liquids
    2. gases
    3. solids
    4. all of these
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  9. Which of the following is correct about gaseous state?
    1. thermal energy >> molecular attraction
    2. thermal energy << molecular attraction
    3. thermal energy = molecular attraction
    4. density of gases >> density of liquids
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  10. 1°C increase in temperature is equal to a rise of:
    1. 5/9 °F
    2. 9/5 °F
    3. 1 °F
    4. 33 °F
      5. Show Answer
      Answer: B
      Explanation:
      • N/A

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