How high the boiling point can be elevated depends on the

a) number of particles of solute in the solution.
b) number of particles of solvent in the solution.
c) density of the particles of solute in the solution.
d) volume of the particles of solute in the solution.

C) Density of the particles of solute in the solution

Um google the question and answer them.

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na