Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Amongst $$\mathrm{He}, \mathrm{Ne}, \mathrm{Ar}$$ and $$\mathrm{Kr}$$; 1$$\mathrm{g}$$ of activated charcoal adsorbs more of $$\mathrm{Kr}$$.
Reason R: The critical volume $$\mathrm{V}_{\mathrm{c}}\left(\mathrm{cm}^{3} \mathrm{~mol}^{-1}\right)$$ and critical pressure $$\mathrm{P}_{\mathrm{c}}$$ (atm) is highest for Krypton but the compressibility factor at critical point $$\mathrm{Z}_{\mathrm{c}}$$ is lowest for Krypton.
In the light of the above statements, choose the correct answer from the options given below
Match List I with List II
LIST I | LIST II | ||
---|---|---|---|
A. | Physisorption | I. | Single Layer Adsorption |
B. | Chemisorption | II. | $20-40 \mathrm{~kJ} \mathrm{~mol}^{-1}$ |
C. | $\mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g}) \stackrel{\mathrm{Fe}(\mathrm{s})}{\longrightarrow} 2 \mathrm{NH}_{3}(\mathrm{~g})$ | III. | Chromatography |
D. | Analytical Application or Adsorption | IV. | Heterogeneous catalysis |
Choose the correct answer from the options given below:
Adding surfactants in non polar solvent, the micelles structure will look like
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.
Reason (R) : Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and / or prevents malfunctioning.
In the light of the above statements, choose the correct answer from the options given below :