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

where,
 = freezing point of solution = ?
 = freezing point of solution = ?
 = freezing point of water =
 = freezing point of water = 
 = freezing point constant 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 solute (ethylene glycol) = 21.4 g
 = mass of solvent (water) =
= mass of solvent (water) = 
 = molar mass of solute (ethylene glycol) = 62g/mol
 = 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 solution = ?
 = boiling point of water =
 = boiling point of water = 
 = boiling point constant 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 solute (ethylene glycol) = 21.4 g
 = mass of solvent (water) =
= mass of solvent (water) = 
 = molar mass of solute (ethylene glycol) = 62g/mol
 = 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 