Question

BELLOW AND TYPE THE LETTER OF THE CORRECT ANSWER ON THE SPACE PROVIDED. NOTE: BEFORE YOU PROCEED WITH THE QUESTION PLEASE COPY THE CHOICES IN A SHEET OF PAPER.
A. DECOMPOSITION
B. SINGLE REPLACEMENT
C. DOUBLE REPLACEMENT
D. SYTHESIS
E. COMBUSTION

1.NH₃ + CuO → Cu + N₂ + H₂O *
2.P₄O₁₀ + H₂O → H₃PO₄ *
3. NaOH + H₂SO₄ → Na₂SO₄ + H₂O *
4.Zn + AgCl → ZnCl₂ + Ag *
5.CH₄ + H₂O → CO₂ + H₂O * ​

Answer 1

Answer:

4 is correct I think so please mark me as brianlist