GAT PYQ 2025 Mock Test – II – Q57

Question:

Match List I with List II and select the answer using the code given below the Lists:

List I (Reaction) List II (Type)
A. CaO(s) + H2O(l) → Ca(OH)2(aq) 1. Single displacement
B. CaCO3(s) → CaO(s) + CO2(g) 2. Double displacement
C. Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s) 3. Combination
D. Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq) 4. Decomposition

Match List I with List II and select the answer using the code given below the Lists:

List I (Reaction) List II (Type)
A. CaO(s) + H2O(l) → Ca(OH)2(aq) 1. Single displacement
B. CaCO3(s) → CaO(s) + CO2(g) 2. Double displacement
C. Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s) 3. Combination
D. Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq) 4. Decomposition

Options:

  • A-2, B-1, C-4, D-3
  • A-2, B-4, C-1, D-3
  • A-3, B-4, C-1, D-2
  • A-3, B-1, C-4, D-2
  • A-2, B-1, C-4, D-3
  • A-2, B-4, C-1, D-3
  • A-3, B-4, C-1, D-2
  • A-3, B-1, C-4, D-2

Correct Answer: A-3, B-4, C-1, D-2

Explanation:

A. CaO(s) + H2O(l) -> Ca(OH)2(aq) is a combination reaction. B. CaCO3(s) -> CaO(s) + CO2(g) is a decomposition reaction. C. Pb(s) + CuCl2(aq) -> PbCl2(aq) + Cu(s) is a single displacement reaction. D. Na2SO4(aq) + BaCl2(aq) -> BaSO4(s) + 2NaCl(aq) is a double displacement reaction.

A. CaO(s) + H2O(l) -> Ca(OH)2(aq) is a combination reaction. B. CaCO3(s) -> CaO(s) + CO2(g) is a decomposition reaction. C. Pb(s) + CuCl2(aq) -> PbCl2(aq) + Cu(s) is a single displacement reaction. D. Na2SO4(aq) + BaCl2(aq) -> BaSO4(s) + 2NaCl(aq) is a double displacement reaction.

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