Q35 of 61 Page 4

Why is tincture iodine applied on wounds?

Tincture iodine is a solution of iodine in alcohol. It has antiseptic properties and, is therefore, applied on wounds to protect from germs.

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33 Why do some metals replace the other metals from their solutions? 34 Name a metal that replaces silver from silver nitrate solution. Give its equation and reason also. 36 Explain the use of chlorine in water purification plants. 37 Why is aluminium used in making airplanes?