Question

answer the questions please​

Answer 1

1.

   Force of attraction is the chemical bond between two atoms -

Force of attraction is high in solids, Medium in liquids and Lowest in gases.

According to your question  the answer is :----

NaCl > water > CO2

( NaCl is Sodium Chloride which is salt, thats why it has the highest force of attraction )

2.

     Density is the measure of volume in a substance.

Iron is more heavier that means it has more density than cotton.

3.

  Boiling point is the temperature at which the vapor pressure of the liquid will be equal to that of atmospheric pressure of that place.

As atmospheric pressure at Shimla is less than that of Delhi, the boiling point is also less.

4.

Sublimation.