In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: Organochlorine pesticides are organic compounds that have been chlorinated. Reason: Fenitrothion is one of the organochlorine pesticides.A) 1
B) 2
C) 3
D) 4
Correct Answer: C
Solution :
Pesticides are the substances used to kill or repel pests. On the basis of chemical structure, major pesticides are grouped under five categories: (i) organochlorines (ii) organophosphates (iii) carbamates (iv) pyrethroids (v) triazines. Organochlorines are basically organic compounds that have been chlorinated and have very low bio-degradation and get accumulated in environment and possess serious problems. DDT, BHC, aldrin and endosulphan are the examples of organophosphate.
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