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Which of the following statements about detergents is correct?

hard Q9 of 15
General Science - Physics (Basics)
Which of the following statements about detergents is correct?
ADetergents are sodium or potassium salts of fatty acids
BDetergents form scum in hard water
CDetergents are acidic in nature
DDetergents are synthetic and do not form scum in hard water
Step-by-Step Solution
  1. Step 1: Understand detergent properties

    Detergents are synthetic cleaning agents designed to work well in hard water.
  2. Step 2: Analyze options

    Detergents are not salts of fatty acids (that's soap); they do not form scum in hard water; detergents are generally neutral or slightly basic, not acidic.
  3. Step 3: Explain why other options are wrong

    Soaps are sodium or potassium salts of fatty acids, not detergents; detergents do not form scum; detergents are not acidic.
  4. Final Answer:

    Detergents are synthetic and do not form scum in hard water → Option D
  5. Quick Check:

    Detergents = Synthetic, no scum in hard water ✅
Quick Trick: Detergents work well in hard water unlike soaps.
Common Mistakes:
MISTAKES
  • Confusing soaps and detergents properties.
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