Answer: The freezing point and boiling point of the solution are
and
respectively.
Explanation:
Depression in freezing point:

where,
= freezing point of solution = ?
= freezing point of water = 
= freezing point constant of water = 
i = vant hoff factor = 1 ( for non electrolytes)
m = molality
= mass of solute (ethylene glycol) = 21.4 g
= mass of solvent (water) = 
= molar mass of solute (ethylene glycol) = 62g/mol
Now put all the given values in the above formula, we get:


Therefore,the freezing point of the solution is 
Elevation in boiling point :

where,
= boiling point of solution = ?
= boiling point of water = 
= boiling point constant of water = 
i = vant hoff factor = 1 ( for non electrolytes)
m = molality
= mass of solute (ethylene glycol) = 21.4 g
= mass of solvent (water) = 
= molar mass of solute (ethylene glycol) = 62g/mol
Now put all the given values in the above formula, we get:


Thus the boiling point of the solution is 