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Location P Q R S Relative humidity(%) 0 50 80 100 From the above table, which location is it likely to rain?

Which of the following is not an application of capillarity?

What happens if the dew point of air is further reduced?

A collection of condensed suspended dust particles in the air constitute

4a. Define the boiling point of a liquid. b. Describe with the aid of a labelled diagram, an experiment to determine the boiling point of a small quantity of a liquid. c. State two factors that may affect the boiling point of a liquid. d. Using the kinetic theory of matter, explain why pure water changes to steam at S.T.P without any change in temperature, although heat is being supplied to the water.

If the S.V.P of water vapour was 13.5mmHg at 33ºC and 7.3mmHg at 7ºC. Find the percentage relative of the air on a day when average air temperature was 33ºC and dew point was 7ºC.

If the rate of evaporation is y, and the rate of condensation is x, then, a vapour is saturated when

Newton's law of cooling is valid only for a

When thermal energy in a solid is increased, the change in state is called

The constant temperature at which a liquid change into gaseous state is known as

The vapour pressure?

Which of the following instruments may be used to measure relative humidity?

I. A liquid boils when its saturated vapor pressure is equal to the external pressure II. Dissolved substances in pure water lead to an increase in the boiling point. III. When the external pressure is increased, the boiling point increases. IV. Dissolved substances in pure water decreases the boiling point Which of the above combinations are peculiarities of the boiling point of a liquid?

A vapor is said to be saturated when?

A block of ice at its melting point is left on a table in the atmosphere and observed to melt gradually. Which of the following statements is true about the melting process?