The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is:1. to keep the washing powder dry.2. to maintain the alkalinity of the powder. Which of these statements is/are correct?
✓ Correct answer: c) Both 1 and 2
ExplanationDetergents are cleaning agents used to remove dirt, grease, and stains from surfaces and fabrics.Key additives like sodium sulphate prevent clumping by keeping the powder dry, while sodium silicate maintains alkalinity, enhancing the cleaning efficiency.Statement 1 is correct: Sodium sulphate is added to keep the washing powder dry by preventing it from absorbing moisture.Statement 2 is correct: Sodium silicate is used to maintain the alkalinity of the detergent, which enhances the cleaning action by breaking down grease and dirt.353
Practice more Science PYQs
Attempt a free 10-question quiz or browse the full Science & Technology previous-year-question bank with instant answers and explanations.
🔬 Science PYQs →