Boating Coach
Environment and securityQuestion 425 of 566

What do bilge cleaners, even biodegradable ones, do to oil?

  1. They remove it fully
  2. They change it into harmless water
  3. They sink it to the bottom
  4. They split it into tiny droplets, and the oil stays
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Correct answer: They split it into tiny droplets, and the oil stays

The oil stays in the water. Use absorbent cloths instead.

Source: Safe Boating Guide (TP 511E, 2026), Reduce pollution for bilges, page 58

All questionsPractice the topic "Environment and security"

Questions last reviewed: 18 October 2026