Multiple choice general knowledge science & technology

Siphon will fail to work if

  1. the densities of the liquid in the two vessels are equal

  2. the level of the liquid in the two vessels are at the same height

  3. both its limbs are of unequal length

  4. the temperature of the liquids in the two vessels are the same
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A siphon operates due to the pressure difference created by a height difference between liquid levels. When both vessels have liquid at the same level, there's no gravitational pressure gradient to drive flow, causing the siphon to fail regardless of tube configuration.

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