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प्रश्न
Which from following statements is correct regarding a detergent sodium lauryl sulphate?
विकल्प
It is anionic detergent and is used in toothpaste.
It is cationic detergent and is used as household detergent.
It is cationic detergent and is used as hair conditioner.
It is an ether and used as liquid detergent.
MCQ
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उत्तर
It is anionic detergent and is used in toothpaste.
Explanation:
Sodium lauryl sulphate (SLS) has the structure CH₃(CH₂)₁₁OSO₃⁻Na⁺. On ionisation in water, it releases a negatively charged (anionic) hydrophilic head , making it an anionic detergent. It is widely used in toothpaste, shampoos, and cosmetics as a foaming/cleansing agent.
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