Which of the option(s) regarding true/false nature of the statements is/are correct?
S-1 : Out of all colligative properties, osmotic pressure is easiest to determine experimentally.
S-2 : Chemisorption is a multilayer process.
S-3 : Solubility of gases in water increases with increase in temperature,
S-4 : Addition of NaCl can cause coagulation in both +vely charged and -vely charged sols.
S-5 : Enzyme catalysed reactions are elementary reactions.

S-6 : For the same atomic radius, the density of an element will be greater for BCC lattice than FCC lattice.