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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?
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.
Consider the following statements.
1. SI unit of atmospheric pressure is Nm-2 or pascal and CGS unit is dyne/cm2.
2. The barometer is a device by which the atmospheric pressure is measured.
3. The standard atmospheric pressure is the pressure required of 76 cm of Hg column or 760 mm of Hg column, which is equivalent to 1 atm.
Which of the statements given above is/are correct?
The percentage humidity is less than the relative humidity only at __________ percent humidity.
High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.
Consider the following statements and choose the correct answer:
1. A direct proportionality exists between vapour pressure and the concentration of water vapour in the atmosphere
2. Relative humidity is an expression of the ratio of the actual vapour pressure of the atmosphere when saturated at the same temperature
3. A rise or fall in temperature with no change in vapour pressure will cause a drop or rise, respectively, in relative humidity
4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity
Atmospheric conditions are well-governed by humidity. Which one among the following may best define humidity?
Atmospheric conditions are well governed by humidity. Which one among the following may best define humidity?
Which of the following statements is/are true/false? 1. By increasing the temperature and pressure, we can convert atmospheric gases into liquid state. 2. A hot dry day means that the atmospheric temperature is high and the air humidity is low. Both these factors lead to an increase in the rate of evaporation and thus a large amount of cold formation.
Consider the following statements about the Atmospheric pressure phenomenon and identify the correct ones. Atmospheric pressure is basically a force in any area pushed by any surface by the weight of the Earth's atmosphere.  The atmospheric pressure increases with an increase in the altitude for any region.  The earth's rotation affects the pressure of the atmosphere in various ways.