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11

Which of the following is not correct about the molecules of a substance in a gaseous state. They?

  • A. are in a constant state of motion
  • B. have different speeds
  • C. have a temperature which is measured by the average kinetic energy
  • D. The collision between the gases is perfectly inelastic
View Answer & Discuss (2) JAMB 2021
12

A given mass of gas has a pressure of 80 Nm\(^{-2}\) at a temperature of 47 C. If the temperature is reduced to 27 C with volume remaining constant, the new pressure is?

  • A. 46.0 Nm\(^{-2}\)
  • B. 75.0 Nm\(^{-2}\)
  • C. 80.0 Nm\(^{-2}\)
  • D. 85.3 Nm\(^{-2}\)
View Answer & Discuss (2) JAMB 2021
13

A gas at a volume of V\(_{0}\) in a container at pressure p\(_{0}\) is compressed to one-fifth of its volume. What will be its pressure if the magnitude of its original temperature T is constant?

  • A. \(\frac{p_{0}} {5}\)
  • B. \(\frac{4p_{0}}{5}\)
  • C. p\(_{0}\)
  • D. 5P\(_{0}\)
View Answer & Discuss (6) JAMB 2021
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14

According to kinetic molecular model in gases,

  • A. the particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern
  • B. the particles vibrate about fixed positions and are held together by the strong intermolecular bonds between them
  • C. the molecules are very far apart and occupy all the spaces made available to them
  • D. the particles occur in clusters with molecules slightly further apart
View Answer & Discuss JAMB 2022
15

The vapour pressure?

  • A. increases non-linearly with measuring temperature
  • B. increases linearly with increasing temperature
  • C. decreases linearly with increasing temperature
  • D. decreases non-linearly ith measuring temperature
View Answer & Discuss (2) JAMB 2022
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
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