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Health and Hygiene — quick quiz

5 real WB TET questions on Health and Hygiene. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

A child in Class 4 observes that boiling water for 10 minutes before drinking reduces the risk of waterborne diseases. Which of the following best explains why boiling is an effective method of water purification?