Matter in our Surroundings

Which condition out of the following will increase the evaporation of water ?

In which of the following conditions, the distance between the molecules of hydrogen gas would increase ?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the-container

Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions.

The property to flow is unique to fluids. Which one of the following statement is correct ?

During summer, water kept in an earthen pot becomes cool because of the phenomenon of

A few substances are arranged in the increasing order of'forces of attraction' between their particles.
Which one of the following represents a correct arrangement ?