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Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following statements is not true:

1. Chlorine and iodine are used as strong disinfectants.
2. Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics.
3. Disinfectants harm the living tissues.
4. A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant.

Correct answer: Dilute solutions of Boric acid and Hydrogen Peroxide are strong antiseptics.

Solution

Dilute solutions of Boric acid and Hydrogen Peroxide are mild antiseptics, not strong ones. The other statements are correct.

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