Question

Identify the type of chemical reaction. NH3 + H2O NH4OH

Answer 1

NH3 + H2O -----> NH4OH
This is chemical combination reaction or synthesis reaction.
Here reactants are many but products are one only.

Answer 2

$\bold{NH_{3} + H_{2}O\ {gives}\ NH_{4}OH}$ is identified as synthesis combination type of chemical reaction.

Explanation:

In this type of reaction, there are two or more compounds combine to form one compound it is called as synthesis or combination reaction. In the given chemical reaction, ammonia $NH_{3}$ and water  $H_{2}O$ are two different compounds which combines together to form one compound called ammonium hydroxide $NH_{4}OH$ .

Thus the given chemical reaction is inferred as synthesis or combination type of chemical reaction.