For control of insects and mites in grains, fumigation is done. What f – McqOptions

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1.	For control of insects and mites in grains, fumigation is done. What factor does the toxicity of fumigation depend on?
A.	Concentration of gas
B.	Length of exposure
C.	Concentration of gas & Length of exposure
D.	None of the mentioned
Answer» D. None of the mentioned

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