engineering recuitment HPCL Engineer Mock Test 2024 People Development & Environment Basics of Environment
Consider the following statements with regard to atmospheric humidity:
1. Absolute humidity is the amount of water vapour per unit volume.
2. Hygrometer is used to measure relative humidity.
3. Dew point is the temperature at which the relative humidity is 75%.
Which of the above statements are correct?
1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3