Which of the following reactions does NOT represent a neutralisation reaction?
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A.
H₂SO₄ + Ca(OH)₂ → CaSO₄ + 2H₂O
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B.
CH₃COOH + NaOH → CH₃COONa + H₂O
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C.
HCl + NaOH → NaCl + H₂O
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D.
Na₂CO₃ + HCl → NaCl + CO₂ + H₂O
Correct Answer:
D. Na₂CO₃ + HCl → NaCl + CO₂ + H₂O
Explanation:
The logic involves shifting each letter backward by 4 positions in the English alphabet. For SKIB to OGNG: S-4=O, K-4=G, I-4=E (Note: Using the pattern for CUCV to YQHA: C-4=Y, U-4=Q, C-4=Y, V-4=R, the shift is consistently -4). Applying this -4 shift to QIRK: Q-4=M, I-4=E, R-4=N, K-4=G. However, based on the provided options, the specific pattern used is S(-4)=O, K(+4)=O, I(-4)=E, B(+4)=F (not matching). Let's re-evaluate: S(19) to O(15) is -4; K(11) to G(7) is -4; I(9) to N(14) is +5; B(2) to G(7) is +5. Testing CUCV to YQHA: C(3) to Y(25) is -4; U(21) to Q(17) is -4; C(3) to H(8) is +5; V(22) to A(1) is +5. Applying the pattern (-4, -4, +5, +5) to QIRK: Q(17)-4=M(13), I(9)-4=E(5), R(18)+5=W(23), K(11)+5=P(16). This results in MEWP.
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