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MDCAT
Chemistry
2021

Chemistry · States of Matter - Gases, Liquids and Solids

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

When the sudden expansion of gases takes place, cooling occurs. This is called:

Options
  • A

    Freezing effect

  • B

    Joule Thomson effect

  • C

    Boyles effect

  • D

    J Perrin effect 

Explanation

Joule-Thomson effect, also called Joule-Kelvin effect, the change in temperature that accompanies expansion of a gas without production of work or transfer of heat.

OPTION A: Freezing is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point.

OPTION B: Joule-Thomson effect, also called Joule-Kelvin effect, the change in temperature that accompanies expansion of a gas without production of work or transfer of heat

OPTION C: Boyle’s effect states that If volume increases, then pressure decreases and vice versa, when the temperature is held constant.

OPTION D: J perrin has no work of effects but he is known especially for his discovery of sedimentation equilibrium.

Freezing is a phase transition where a liquid turns into a solid when its temperature is lowered below its freezing point.

Joule-Thomson effect, also called Joule-Kelvin effect, the change in temperature that accompanies expansion of a gas without production of work or transfer of heat.

Boyle’s effect states that If volume increases, then pressure decreases and vice versa, when the temperature is held constant.

J perrin has no work of effects but he is known especially for his discovery of sedimentation equilibrium. 

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Tagged under Chemistry · States of Matter - Gases, Liquids and Solids · 2021