Question

what is combination reaction give an examples class 11 chemistry
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Answer 1

Explanation:

when two or more substances ( compound or an element) combines to form a single reaction is called as combination reaction.

In this reaction heat is released this is exothermic reaction.

any example you can take of exothermic is combination reaction.

1. burning of natural coal

CH4 ( g) + 2O2 (g) gives CO2 + 2H20

Respiration is also an example of such type of reaction.

Answer 2

Answer:

when 2 or more compound react to form a single compound is called combination reaction

eg_H2 + 02-2h2O