Caffeine Science and Daily Effects: PTE Listening: Multiple Choice, Single Answer practice questions

3 original Listening: Multiple Choice, Single Answer questions. Answer every question, then check them for your score and the answers. It is free with no login; create a free account to save your score and get a BandLadder AI score for speaking and writing.

3 questions

Free, with answers

PTE Academic and PTE Core

Updated Oct 2026

Listen to the recording and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Caffeine in Floral Nectar

Speaker: American English

Plays once, as in the test: no pausing or replay

0:00 / 0:43

What is the main finding regarding low concentrations of caffeine in floral nectar?

AIt damages the nervous systems of insects that feed on coffee blossoms.
BIt improves pollinator recall of floral scents to encourage return visits.
CIt increases the nutritional quality of nectar produced by citrus plants.
DIt serves as a deterrent to stop honeybees from consuming floral nectar.

Adenosine and Sleep Cycles

Speaker: Australian English

Plays once, as in the test: no pausing or replay

0:00 / 0:51

Why does an energy crash often occur after caffeine wears off?

AAdenosine production ceases completely while caffeine is active in the brain.
BThe nervous system becomes permanently damaged by blocked neural receptors.
CCaffeine destroys the natural chemical structure of resting hormones.
DBuilt up adenosine floods the receptor sites once caffeine is metabolised.

Decaffeination Using Carbon Dioxide

Speaker: Indian English

Plays once, as in the test: no pausing or replay

0:00 / 0:46

According to the speaker, what is a primary advantage of the supercritical carbon dioxide method?

AIt requires dry coffee beans to prevent the loss of natural aromas.
BIt retains essential flavour compounds while selectively removing caffeine.
CIt completely removes all carbohydrates and oils from green coffee beans.
DIt relies on chemical solvents that eliminate the need for high pressure.

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Caffeine in Floral Nectar

Adenosine and Sleep Cycles

Decaffeination Using Carbon Dioxide

More Listening: Multiple Choice, Single Answer sets