Question

define combination reaction​

Answer 1

Combination reaction :- A type of reaction in which two or more substances(element, compound) combines to form a single compound.

Example:-1) CaO + H2O ---> CA(OH)2

2) H2 + O2 ----> H20

3) C + O2 ------> Co2

hope it helps....

Answer 2

$<h2>Hi, GOOD morning</h2>$

The reaction in which two or more substances combine together to form
a single substance under suitable conditions is Called Combination reaction

Example:H2+O2-------->H2O

2)Mg+02------->MgO

3)CaO+H2O-------->CA(OH)2