Question

1. An indicator is used to detect
of a chemical reaction.
a) Initiation b) chain mechanish e) completion
d) free radical mechanism
dicated by
showing sharp colour change.

please solve the question and give me correct answer for this question.

explain your answer is correct.​

Answer 1

Option d.

Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Answer 2

Answer:

I think the answer is (d)