Description : 10. In Freundlich Adsorption isotherm, the value of 1/n is: (1) 1 in case of chemisorption (2) between 0 and 1 in all cases (3) between 2 and 4 in all cases (4) 1 in case of physical adsorption
Last Answer : between 0 and 1 in all cases
Description : For a linear plot of log(x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct ? (k and n are constants)
Last Answer : For a linear plot of log(x/m) versus log p in a Freundlich adsorption isotherm, which of the following ... Both k and 1/n appear in the slope term.
Description : The Langmuir adsorption isotherm is deduced using the assumption.
Last Answer : The Langmuir adsorption isotherm is deduced using the assumption. A. The adsorption isotherm is ... D. The adsorption takes place in multilayers.
Description : According to Freundlich adsorption isotherm, which of the following is correct ?
Last Answer : According to Freundlich adsorption isotherm, which of the following is correct ? A. `(x)/(m ... the above are correct for different ranges of pressure
Description : An adsorption isotherm equation proposed by Langmuir is of the form `V = (V_(0)bPO)/((1 + bP))` where V is the volume of gas adsorbed at pressure P. F
Last Answer : An adsorption isotherm equation proposed by Langmuir is of the form `V = (V_(0)bPO)/((1 + bP))` where V is ... of V on P can be depicted as B. C. D.
Description : Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m of the adsorbent at pressur
Last Answer : Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m ... p^(1//2)` D. `p^(1//4)`
Description : Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of `"log " (x)/(m)` versus log P gives a straight line with slope equal
Last Answer : Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of `"log " (x ... of pressure. D. Adsorption is independent of pressure.
Description : According to Freundlich adsorption isotherm, which of the following is correct?
Last Answer : According to Freundlich adsorption isotherm, which of the following is correct? A. `(x)/(m) ... the above are correct for different ranges of pressure
Description : Freundlich adsorption isotherm, with the help of a graph.
Last Answer : Explain the following : Freundlich adsorption isotherm, with the help of a graph.
Description : Write an equation for Freundlich adsorption isotherm.
Last Answer : Write an equation for Freundlich adsorption isotherm.
Description : What is the adsorption Isotherm?
Last Answer : What is the adsorption Isotherm?
Description : Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? (A) Langmuir adsorption isotherm (B) Adsorption isobar (C) Freundlich adsorption isotherm (D) None of these
Last Answer : (B) Adsorption isobar
Description : Which of the following assumptions of Freunlich adsorption isotherm is incorrect? (a) The constants are temperature dependent (b) It is valid over a range of pressure only (c) Adsorption ... equation is purely an empirical equation (d) The adsorbed molecules may be multimolecular in thickness
Last Answer : (d) The adsorbed molecules may be multimolecular in thickness
Description : The line on a map connecting points of equal temperature at a given time is – (1) Isohyet (2) Isobar (3) Isthumus (4) Isotherm
Last Answer : (4) Isotherm Explanation: An isotherm is a line that connects points on a map that have the same temperature. Therefore, all points through which an isotherm passes have the same or ... Generally, isotherms representing 5°C or 10°F temperature differences are used, but any interval may be chosen.
Description : B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm. (A) Langmuir (B) Freundlich (C) Tempkin (D) None of these
Last Answer : (A) Langmuir
Description : Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a (A) Straight line (B) Sine curve (C) Parabola (D) Hyperbola
Last Answer : (A) Straight line
Description : The line on a map connecting points of equal temperature at a given time is (1) Isohyet (2) Isobar (3) Isthumus (4) Isotherm
Last Answer : Isotherm
Description : Assertion :- The graphical representation of physical adsorption with temp is Reason :- This is weak adsorption & adsorption is exothermic process.
Last Answer : Assertion :- The graphical representation of physical adsorption with temp is Reason :- This is weak ... D. If both Assertion & Reason are False.
Description : If `x` is the amount of adsorbate and `m` is the amount of adsorbent, which of the following relation is related to adsorption process?
Last Answer : If `x` is the amount of adsorbate and `m` is the amount of adsorbent, which of the following relation is related to ... (x/m) D. `(x)/(m)= p xx T`
Description : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke
Last Answer : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): ... D. If both Assertion & Reason are False.
Description : Assertion :- A sol of `As_(2)S_(3)` prepared by the action of `H_(2)S` on `As_(2)O_(3)` is negatively charge. Reason :- Due to adsorption of `S^(-2)`
Last Answer : Assertion :- A sol of `As_(2)S_(3)` prepared by the action of `H_(2)S` on `As_(2)O_(3) ... Reason is False. D. If both Assertion & Reason are False.
Description : The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order:
Last Answer : The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order: A. `K^(+)lt Na + ... (+)lt K^(+)lt Na^(+)lt Li^(+)`
Description : Frendlich adsorption isotherms are properly represented as in
Last Answer : Frendlich adsorption isotherms are properly represented as in A. B. C. D.
Description : 100 mL of 0.3 M acetic acid is shaken with 0.8 g wood charcoal. The final concentration of acetic acid in the solution after adsorption is 0.125 M. Th
Last Answer : 100 mL of 0.3 M acetic acid is shaken with 0.8 g wood charcoal. The final concentration of acetic acid in the ... g` C. `1.31 g` D. `0.131 g`
Description : Which one of the following is not a property of physical adsorption ?
Last Answer : Which one of the following is not a property of physical adsorption ? A. Higher the ... , more the adsorption D. Unilayer adsorption occurs
Description : Two compounds I and II are eluted by column chromatography (adsorption of `I gt II`). Which one of the following is a correct statement ?
Last Answer : Two compounds I and II are eluted by column chromatography (adsorption of `I gt II`). Which one of the ... slower and has higher `R_(f)` value than I
Description : A particular adsorption process has the following characteristics : (i) It arises due to vander Waals forces and (ii) it is reversible. Identify the c
Last Answer : A particular adsorption process has the following characteristics : (i) It arises due to vander Waals ... temperature. D. Energy of activation is low.
Description : The following statement relate to the adsorption of gases on a solid surface. Identify the incorrect statement among them :
Last Answer : The following statement relate to the adsorption of gases on a solid surface. Identify the ... are increased D. Entropy of adsorption is negative
Description : Which one of the following characteristics is not correct for physical adsorption ?
Last Answer : Which one of the following characteristics is not correct for physical adsorption ? A. ... enthalpy and entropy of adsorption are negative.
Description : The correct statement(s) pertiaining to the adsorption of a gas on a solid surface is (are)
Last Answer : The correct statement(s) pertiaining to the adsorption of a gas on a solid surface is (are) A. ... it is very slow due to higher energy of activation.
Description : Which of the following statements regarding adsorption is/are correct?
Last Answer : Which of the following statements regarding adsorption is/are correct? A. Extent of adsorption ... adsorption is dependent on the nature of adsorbent
Description : Which of the following statements about physical adsorption is correct ?
Last Answer : Which of the following statements about physical adsorption is correct ? A. It is always ... enthalpy of adsorption as compared to chemisorption.
Description : Identify the appropriate graph between enthalpy and progress of physical adsorption.
Last Answer : Identify the appropriate graph between enthalpy and progress of physical adsorption. A. B. C. D.
Description : There is desorption of physical adsorption when
Last Answer : There is desorption of physical adsorption when A. temperature is increased B. temperature is ... pressure is increased D. concentration is increased
Description : Adsorption is the phenomenon in which a substance :
Last Answer : Adsorption is the phenomenon in which a substance : A. accumulates on the surface of the other ... close to the other substance D. None of these
Description : Following is the variation of physical adsorption with temperature.
Last Answer : Following is the variation of physical adsorption with temperature. A. B. C. D.
Description : What is adsorption?
Last Answer : What is adsorption?
Description : Adsorption and absorption. Give one example.
Last Answer : Distinguish between the following : Adsorption and absorption. Give one example.
Description : Explain two applications of adsorption.
Last Answer : Explain two applications of adsorption.
Description : Explain how the adsorption of gas on solid varies with : a. nature of adsorbate and adsorbent
Last Answer : Explain how the adsorption of gas on solid varies with : a. nature of adsorbate and adsorbent b. surface area of adsorbent
Description : Adsorption is surface phenomenon. Explain.
Last Answer : Adsorption is surface phenomenon. Explain.
Description : Give four uses of adsorption.
Last Answer : Give four uses of adsorption.
Description : Mention factors affecting adsorption of gas on solids.
Last Answer : Mention factors affecting adsorption of gas on solids.
Description : Define adsorption. Why students can read blackboard written by chalks?
Last Answer : Define adsorption. Why students can read blackboard written by chalks?
Description : Name type of adsorption in which compound is formed.
Last Answer : Name type of adsorption in which compound is formed.
Description : Name type of adsorption in which van der Waals forces are present.
Last Answer : Name type of adsorption in which van der Waals forces are present.
Description : Write characteristics of adsorption.
Last Answer : Write characteristics of adsorption.
Description : What is adsorption in chromatography?
Last Answer : Adsorption chromatography (AC) is chromatographic separation due to energetic interactions between the solute and the surface of the porous packings.
Description : Frequently employed materials for the adsorption chromatography of proteins include (A) High capacity supporting gel (B) Starch blocks (C) Calcium phosphate gel alumina gel and hydroxy apatite (D) All of these
Last Answer : Answer : C