Answer: The correct answer is \(2H_2+O_2\rightarrow 2H_2O\)
Explanation:
Synthesis reaction is defined as the reaction in which two smaller substances combine together to form a large single compound.
\(A+B\rightarrow AB\)
From the given options:
Option A: \(2H_2+O_2\rightarrow 2H_2O\)
This is a synthesis reaction and only one product is forming.
Option B: \(2H_2O_2\rightarrow 2H_2O+O_2\)
This is a decomposition reaction.
Option C: \(CaCO_3\rightarrow CaO+CO_2\)
This is a decomposition reaction.
Option D: \(2AgNO_3+Zn\rightarrow 2Ag+Zn(NO_3)_2\)
This is a single displacement reaction.
Thus, the correct answer is \(2H_2+O_2\rightarrow 2H_2O\)
