Q.Consider the following statements. I. The temperature at which air gets saturated is called dew point. II. Heat energy is generally measured in terms of calorie. III. Equatorial regions are characterised by highest relative humidity. IV. Relative humidity is defined as the total weight of moisture contained (water vapour) per volume of air at a definite temperature. Which of the statements given above is/are correct?
Correct answer: I, II and IV