Question

why are chemical reaction irreversible?​

Answer 1

Answer:

as we can't reverse them back to its original form

eg. making chappati you can't turn a chappati back into dough, or turn a dough into flour

Answer 2

Answer:

Some chemical reactions can occur in only one direction. These reactions are called irreversible reactions. A chemical reaction is usually written in a way that suggests it proceeds in one direction, the direction in which we read, but all chemical reactions are reversible, and both the forward and reverse reaction occur to one degree or another depending on conditions. We can't turn a chemical reaction back to normal like curd as we can turn milk into curd but not curd into milk.

Explanation:

Hope this will help you