CH₄ is absorbed on 1g charcoal at 0$$^\circ$$C following the Freundlich adsorpiton isotherm 10.0 mL of CH₄ is adsorbed at 100 mm of Hg, whereas 15.0 mL is adsorbed at 200 mm of Hg. The volume of CH₄ adsorbed at 300 mm of Hg is 10^x mL. The value of x is _________ $$\times$$ 10^-2.

(Nearest integer) [Use log₁₀2 = 0.3010, log₁₀3 = 0.4771]

CO₂ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO₂ adsorbed becomes 64 times when the pressure of CO₂ is doubled. The value of n in the Freundlich isotherm equation is ____________ $$\times$$ 10^$$-$$2. (Round off to the Nearest Integer)

100 ml of 0.0018% (w/v) solution of Cl^$$-$$ ion was the minimum concentration of Cl^$$-$$ required to precipitate a negative sol in one h. The coagulating value of Cl^$$-$$ ion is _________ (Nearest integer)