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25. "Excessive use of pesticides in agriculture has resulted in a large number of health problems in human ben.  How do the pesticides reach man's body? Mention and define the phenomenon involved.

26. Name the allotrope of carbon which is use to make electrode.
27. Distinguish between alkane, alkene and alkyne.

 

Dear student,

Question 26)
Graphite.

Refer to link for question 27
https://www.meritnation.com/ask-answer/question/difference-between-alkanes-alkenes-and-alkynes/carbon-and-its-compounds/12458963

For remaining question kindly post in separate thread.
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