Green Warrior Class 5 Clean Water and Sanitation

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

Sometimes, water contains high levels of minerals like Calcium and Magnesium. This is called "Hard Water." Why is using hard water for "Sanitation" and cleaning a challenge?

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A It is too heavy to carry in a bucket.
B It prevents soap from forming a lather (bubbles), making it harder to clean things.
C It turns into ice even at room temperature.
D It makes the water taste like sugar.

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Answer: B. It prevents soap from forming a lather (bubbles), making it harder to clean things.

Answer: (B)
Simple Explanation: Minerals in hard water react with soap to form "scum" instead of bubbles. This means you have to use way more soap and water to get your hands or clothes clean.

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Sometimes, water contains high levels of minerals like Calcium and Magnesium. This is called "Hard Water." Why is using hard water for "Sanitation" and cleaning a challenge?

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