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  9. Q405

RRB Technician (Grade I Signal + Grade III) 2024 · Question 405 of 1214

Which of the following is a common drawback of using soap in hard water?

best-effort

  1. ASoap dissolves too quickly in hard water.
  2. BFormation of soap scum due to the reaction with calcium and magnesium ions.Correct
  3. CSoap creates too much lather.
  4. DSoap loses its colour in hard water.

Answer: B. Formation of soap scum due to the reaction with calcium and magnesium ions.

Official answer key verified. Detailed explanation coming soon.

Source: RRB Technician Grade 3 GK Questions: 24 Dec Shift 2 (12:45 PM - 2:15 PM) (testpaper.org compilation) · memory-based

← Q404View full paper (1214 questions)Q406 →

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