True about mosquito preventive nets are all except?
Ans. is 'c' i.e.,Best pattern is circular The best pattern of mosquito net is the rectangular net.There should not be a single rent in the net.The Size of openings in the net is of utmost impoance, the size should not exceed 0.0475 inch in any diameter.The number of holes in one square inch in usually 150..
Hole size < 0.0475
150 holes per square inch
Best pattern in circular
There should be no rent