Teaching AP TET Paper I & Paper II Mock Test Series 2025 General Science Chemistry Chemical Reaction
Which of the following is NOT a double displacement reaction?
1
BaCl2 + H2SO4 → BaSO4 + 2HCl
2
Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3
3
CuSO4 + H2S → CuS + H2SO4
4
NaOH + HCl → NaCl + H2O