The relative humidity in an incubator is usually set at? by Sunday | Dec 20 | Agricultural Science WAEC | 0 comments A. 10% – 30% B. 40% – 60% C. 70% – 80% D. 90% – 100%. Correct Answer: Option B = 40% – 60% Users Also Read These:Which of the following is used to measure relative humidity?A relative humidity of 100 percent means that air is?If the partial pressure of water vapour at 27°C is…Which of the following instruments is used to…When there is a large difference in the reading of…