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Iepures lalle op • Distilled water is the purest form of water.Drinking water can be – Question

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Iepures lalle op
• Distilled water is the purest form of water.Drinking water can be purified by boiling or chlorination• Chlorine tablets are also used to purify water.ExercisesLET’S UNDERSTANDQTA. Objective type questions.1.Fill in the blanks with the correct words.1. Air contains(78%oxygen) layer traps harmful UV rays of the sun.(stratosphere****************/

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