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  9. Q272

RRB Junior Engineer / DMS / CMA 2015 · Question 272 of 480

Which of the following represents a double displacement reaction?

  1. AZn + 2HCl → ZnCl2 + H2
  2. BCu + AgNO3 → Cu(NO3)2 + 2Ag
  3. CK2SO4 + BaCl2 → BaSO4 + 2KClCorrect
  4. DCH4 + 2O2 → CO2 + 2H2O

Answer: C. K2SO4 + BaCl2 → BaSO4 + 2KCl

Official answer key verified. Detailed explanation coming soon.

Source: RRB JE 28-August Shift question paper with solutions — splessons.com · reliable-secondary

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