Why do we experience cloud-like smoke near our mouth while we speak during winter?

Fill in the blanks by selecting appropriate words from the given list:-

List:-Sieving, evaporation, homogeneous, proportions, electromagnetic

Salt is obtained from seawater by _____.

Choose the right word and fill in the blank: 

Sun helps to change the water into _____. (water vapour/ice)

Fill in the blanks by choosing correct word from the box.

The dissolved substances can be removed from water by _____.

Choose the right word and fill in the blank: 

Large drops of water too heavy to float in the air as clouds begin to fall as _____. (raindrops/water vapour)

Choose the correct word from the list given below:

List: drought, evaporation, condensation, gravity, dust.

The condensation in clouds takes place on _____ particles.

Fill in the blank by selecting an appropriate word from the given list:

List: Nitrogen, oxygen, Winnowing, evaporates, photosynthesis

Water _____ and forms water vapour.

Fill in the blank space by choosing correct words from the list given below . 
List : evaporation, churning, threshing, sieving, sedimentation, winnowing, condensation, hand-picking. 

The process due to which steam changes into the liquid state on cooling is called _____.