i need help with quedtion 1 and with solving 2,3&4 plss

2. What will be depression of freezing point for 1 mole NaCl and 1 mole KCl ? (same/more /less) [ 2point] - molality= mol of solute/kg of solvent; Tf=kf*m 3. what will be depression of freezing point for 1 mole NaCl and 1 mole CaCl2 ? (same/more /less) [2point] 4. what will be depression of freezing point for 1 mole NaCl and 5 mole KCl ? (same/more /less) [2point] 1.What are Colligative properties give their name and explain? [4point] - Colligative properties are physical changes or properties