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 : 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 : 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 : 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 : Write an equation for Freundlich adsorption isotherm.
Last Answer : Write an equation for Freundlich 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 : 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 : 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 : __________ is concerned with the adsorption equilibria. (A) Fick's law (B) Gibb's equation (C) Freundlich equation (D) None of these
Last Answer : (C) Freundlich equation
Description : Freundlich equation applies to the adsorption of solute from (A) Dilute solutions, over a small concentration range (B) Gaseous solutions at high pressure (C) Concentrated solutions (D) None of these
Last Answer : (A) Dilute solutions, over a small concentration range
Description : In frenudlich adsorption isotherm, the value of `1//n` is
Last Answer : In frenudlich adsorption isotherm, the value of `1//n` is A. 1 in case of physical adsorption B. 1 in ... in all case D. between 2 and 4 in all cases
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 : 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 : What is the adsorption Isotherm?
Last Answer : What is the adsorption Isotherm?
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 : 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 : 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 : 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 : 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.