Question

How do fumigants act an stored grain? How do we use ethylene dibromide??​

Answer 1

Answer:

:Fumigation is a method of pest control that completely fills an area with gaseous pesticides—or fumigants—to suffocate or poison the pests within. ... This method also affects the structure itself, affecting pests that inhabit the physical structure, such as woodborers and drywood termites.

The vapour is stable, nonflammable and 3.5 times denser than air. Ethylene dibromide, also known as 1,2 dibromoethane, is used for the fumigation of stored grains, fruits, and vegetables. It is also used for soil disinfection against nematodes.

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Answer 2

Explanation:

A circular pond is of diameter 100 m. It is surrounded by a 3 m wide path. Find the cost of painting the path at the rate of Rs. 20 per square metre (Use π = 3.14).