When is the term 'sorption' used?

Adsorption is multilayer in case of

Which of the following is $NOT$ a characteristic of chemisorption?

Which one of the following gives a straight line for Freundlich adsorption isotherm?

Identify the factors which favour the physical adsorption from the following.
$(I)$ High surface area
$(II)$ Low temperatures
$(III)$ High temperatures
$(IV)$ Low pressures
$(V)$ High pressures

Noble gases are adsorbed by