Description : The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its (A) Integral heat of adsorption (B) Heat of wetting (C) Differential heat of adsorption (D) Heat of normal condensation
Last Answer : (A) Integral heat of adsorption
Description : Defination of Enthalpy of Adsorption
Last Answer : Enthalpy of Adsorption:- The amount of energy released by the attraction of one mole of adsorbate on the adsorbent.
Description : The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the (A) ... (B) Heat of wetting (C) Integral heat of adsorption (D) None of these
Last Answer : (A) Differential heat of adsorption
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 : How would you describe a distance-versus-time graph of Amber's progress?
Last Answer : Need answer
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 : 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 : 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 : 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 : 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 : 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 : 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 : Why physical adsorption is multimolecular whereas chemisorption is unimolecular ?
Last Answer : Chemisorption takes place as a result of reaction between adsorbent and adsorbate. When the surface of the adsorbent is covered with one layer, no further reaction can take place. Physical adsorption is ... any number of layers may be formed one over the other on the surface of the adsorbent.
Description : In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is (A) Equal to the heat of formation of surface compound (B) Equal to the heat of wetting (C) Zero (D) Called integral heat of adsorption
Last Answer : (B) Equal to the heat of wetting
Description : Pick out the wrong statement. Generally for physical adsorption, a gas of (A) Higher molecular weight is adsorbed in preference to a gas of low molecular weight (B) High critical temperature ... volatility is adsorbed in preference to a gas of high volatility (D) None of these
Last Answer : (D) None of these
Description : In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole. (A) 100 (B) 1000 (C) 10000 (D) 100000
Last Answer : (B) 1000
Description : For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. (A) Physical (B) Chemical (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (B) Chemical
Description : Physical removal/loss of herbicides a). Adsorption b). Hydrolysis c). Deamination d). Dealkylation
Last Answer : a). Adsorption
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 : What term is used to identify the forward progress velocity of wavefronts in a waveguide?
Last Answer : Group velocity.
Description : Identify the category of evaluation that assesses the learning progress to provide continuous feedback to the students during instruction. (A) Placement (B) Diagnostic (C) Formative (D) Summative
Last Answer : (C) Formative
Description : Which one from the following is highly associated activity of project planning? (A) Keep track of the project progress. (B) Compare actual and planned progress and costs (C) Identify the activities, milestones and deliverables produced by a project (D) Both (B) and (C)
Last Answer : (C) Identify the activities, milestones and deliverables produced by a project
Description : (i) ………………… development is an index of the overall progress of society. (Cultural / Technological / Physical)
Last Answer : Choose the correct alternative and complete the statements : (i) development is an ... population. (Migration / Demography / Composition)
Description : (i)State why heat changes in physical and chemical processes are indicated by enthalpy changes and not by entropy changes? (ii)What are the limitations of First Law of thermodynamics?
Last Answer : (i) Most of the processes are carried out in an open system i.e, at constant pressure. (ii)(a) Can’t explain the feasibility of the reaction. (b)It poses no restriction on the direction of flow of heat. (c)Practically it is not possible to convert the heat energy into an equivalent amount of work.
Description : 10) i) \( A=\{a, b, c\} \) and \( B=\{x, 4\} \). Write \( A \times B \)ii) Graph of the function \( f: R \rightarrow R \) is given below.a) Write the value of \( f(x) \)b) Write the range of \( f(x) \)c) Identify The function and choose the correct answer.
Last Answer : 10) i) \( A=\{a, b, c\} \) and \( B=\{x, 4\} \). Write \( A \times B \) ii) ... of \( f(x) \) c) Identify The function and choose the correct answer.
Description : At constant temperature, a. Graph shows relation between pressure and volume. Represent the relation mathematically. b. Identify the law.
Last Answer : With the help of graph answer the following - At constant temperature, a. Graph shows relation between ... law. c. Write the statement of law.
Description : How can you identify a unit rate or constant of proportionality in a table In a graph In an equation?
Last Answer : In a table, divide a number in one column by the correspondingnumber in the other column. In a graph it is the gradient of theline. The equation, for the variables X and Y will be of the form Y= mX and the constant of proportionality is m.
Description : The most appropriate option for the term “Public Health” is: A A. Deals about the health of a community B. Deals with the individuals C. Deals with the physical and psychological well-being D. Deals with the productivity of a population
Last Answer : Deals about the health of a community
Description : Which of the following is the appropriate definition of Information Technology? (A) Information Technology refers to the use of hardware and software for pr ocessing information (B) Information ... of principles of Physical sciences and Social sciences for processing of information of many kinds.
Last Answer : Answer: C
Description : What is the most appropriate function of Memory Management Unit (MMU) ? (A) It is an associative memory to store TLB (B) It is a technique of supporting multiprogramming by creating dynamic partitions ... to physical address (D) It is an algorithm to allocate and deallocate main memory to a process
Last Answer : (C) It is a chip to map virtual address to physical address
Description : Which of the following statements is/are incorrect ? (a) Mapping the co-ordinates of the points and lines that form the picture into the appropriate co-ordinates on the device or workstation is known as viewing transformation. (b) The right ... (A) (a) only (B) (a) and (b) (C) (c) only (D) (d) only
Last Answer : (D) (d) only
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 : 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 : 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 : 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 : 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 : 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 : 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 : 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 : 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 : 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 : 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 : 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