Which chemical is present in mosquito repellent

Options :
  1. prallethrin
  2. DDT
  3. BHC
  4. none of these
Answer and Explanation :-

Answer: Option 1

Explanation:

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You made me confess the fears that I have. But I will tell you also what I do not fear. I do not fear to be alone or to be spurned for another or to leave whatever I have to leave. And I am not afraid to make a mistake, even a great mistake, a lifelong mistake and perhaps as long as eternity too.
-James Joyce A Portrait of the Artist as a Young Man