मराठी

Choose the correct statement: Statement I: Hard water is ideal for laundering clothes as it enhances the effectiveness of detergents, resulting in better cleaning.

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प्रश्न

Choose the correct statement:

Statement I: Hard water is ideal for laundering clothes as it enhances the effectiveness of detergents, resulting in better cleaning.

Statement II: Soft water is more efficient for laundering because it allows detergents to lather easily and effectively removes dirt from fabrics.

पर्याय

  • Statement I is true, and Statement II is false.

  • Statement I is false, and Statement II is true.

  • Both Statements I and II are true.

  • Both Statements I and II are false.

MCQ
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उत्तर

Statement I is false, and Statement II is true.

Explanation:

Soft water is highly efficient for laundering because it lacks high concentrations of calcium and magnesium ions, allowing soaps and detergents to dissolve and lather easily, effectively removing dirt. In contrast, hard water reacts with detergents to form an insoluble substance called scum or curd, which reduces cleaning efficiency, wastes detergent, and leaves a grey residue on clothes.

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पाठ 13: Laundry Material - EXERCISES [पृष्ठ २०४]

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डॉ. अलका अगरवाल, उर्वी रावल Home Science for Class 10th ICSE
पाठ 13 Laundry Material
EXERCISES | Q 10. A. | पृष्ठ २०४
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