Institution: Bangladesh Bank Exam: Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯ ||
Topic: বিবিধ, Subject: General knowledge(সাধারণ জ্ঞান)

Best Answer Explained in Below-:

The correct answer to the question regarding the humidity of air measured in percentage is B) Relative humidity. Relative humidity refers to the amount of water vapor present in the air compared to the maximum amount of water vapor the air can hold at a specific temperature, expressed as a percentage. This measurement is crucial because it indicates how close the air is to being saturated with moisture.

For example, if the relative humidity is 50%, it means the air is holding half of the moisture it could potentially contain at that temperature. On the other hand, absolute humidity measures the total mass of water vapor in a given volume of air, irrespective of temperature, and specific humidity expresses the mass of water vapor per unit mass of air. While both absolute and specific humidity provide meaningful insights into humidity levels, they do not utilize percentage as a metric. Therefore, relative humidity is the correct term for humidity measured in percentage terms, making it essential for weather forecasting, climate studies, and understanding comfort levels in environments.