JEE MAIN · CHEMISTRY · SURFACE CHEMISTRY
JEE Main Surface Chemistry Questions & Solutions
64 solved questions on Surface Chemistry, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.
64 solved questions on Surface Chemistry, ranging from easy to JEE-Advanced-flavour hard. Click any to see the full solution.
Four gases A, B, C and D have critical temperatures $5.3,33.2,126.0$ and $154.3 \mathrm{~K}$ respectively. For their adsorption on a fixed amount of charcoal, the correct order is:
View solution →Match List - I with List - II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?
View solution →Match List-I with List-II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →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…
View solution →Match List I with List II : List-IExample of colloids List - IIClassification (a) Cheese (i) dispersion of liquid in liquid (b) Pumice stone (ii) dispersion of liquid in gas (c)…
View solution →Match the following : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;…
View solution →For the coagulation of a negative sol, the species below, that has the highest flocculating power is :
View solution →$20 \mathrm{~mL}$ of $0.5 \mathrm{M} ~\mathrm{NaCl}$ is required to coagulate $200 \mathrm{~mL}$ of $\mathrm{As}_{2} \mathrm{S}_{3}$ solution in 2 hours. The coagulating value of…
View solution →For the adsorption of hydrogen on platinum, the activation energy is $30 ~\mathrm{k} ~\mathrm{J} \mathrm{mol}^{-1}$ and for the adsorption of hydrogen on nickel, the activation…
View solution →When 200 mL of 0.2 M acetic acid is shaken with 0.6 g of wood charcoal, the final concentration of acetic acid after adsorption is 0.1 M. The mass of acetic acid adsorbed per gram…
View solution →When silver nitrate solution is added to potassium iodide solution then the sol produced is :
View solution →Amongst the following statements regarding adsorption, those that are valid are (a) $\Delta$H becomes less negative as adsorption proceeds (b) On a given adsorbent, ammonia is…
View solution →100 mL of 0.3 M acetic acid is shaken with 0.8 g of wood charcoal. The final concentration of acetic acid in the solution after adsorption is 0.125 M. The mass of acetic acid…
View solution →The enthalpy change for the adsorption process and micelle formation respectively are
View solution →Coagulating value of the electrolytes $\mathrm{AlCl}_{3}$ and $\mathrm{NaCl}$ for $\mathrm{As}_{2} \mathrm{S}_{3}$ are 0.09 and 50.04 respectively. The coagulating power of…
View solution →For Freundlich adsorption isotherm, a plot of log (x/m) (y-axis) and log p (x-axis) gives a straight line. The intercept and slope for the line is 0.4771 and 2, respectively. The…
View solution →Which of the following salt solutions would coagulate the colloid solution formed when $\mathrm{FeCl_3}$ is added to $\mathrm{NaOH}$ solution, at the fastest rate?
View solution →As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :
View solution →The graph of $\log \frac{x}{m}$ vs $\log \mathrm{p}$ for an adsorption process is a straight line inclined at an angle of $45^{\circ}$ with intercept equal to $0.6020$. The mass…
View solution →In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption $\left( {{x \over m}} \right)$ is directly proportional to Px. The value of x is :
View solution →Match List - I with List - II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →$100 \mathrm{~mL}$ of $5 \%\,(\mathrm{w} / \mathrm{v})$ solution of $\mathrm{NaCl}$ in water was prepared in $250 \mathrm{~mL}$ beaker. Albumin from the egg was poured into…
View solution →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…
View solution →The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between $\log {x \over m}$ and log p gives a straight line with slope…
View solution →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.…
View solution →Given below are the critical temperatures of some of the gases: .tg {border-collapse:collapse;border-spacing:0;} .tg…
View solution →A 42.12% (w/v) solution of NaCl causes precipitation of a certain sol in 10 hours. The coagulating value of NaCl for the sol in 2 hours is : [Given : Molar mass : Na = 23.0 g…
View solution →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…
View solution →Ferric chloride is applied to stop bleeding because -
View solution →The number of statement/s which are the characteristics of physisorption is __________ A. It is highly specific in nature B. Enthalpy of adsorption is high C. It decreases with…
View solution →The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ___________. Gem stones, paints, smoke, cheese, milk, hair cream,…
View solution →The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is __________ A. The catalyst is diffused over the surface of…
View solution →For the following Assertion and Reason, the correct option is Assertion : For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with…
View solution →Which of the following is used for the preparation of colloids?
View solution →Tyndall effect is observed when:
View solution →A sample of red ink (a colloidal suspension) is prepared by mixing eosin dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :
View solution →Kraft temperature is the temperature :
View solution →Most suitable salt which can be used for efficient clotting of blood will be :
View solution →Which one of the following statements is FALSE for hydrophilic sols?
View solution →The nature of charge on resulting colloidal particles when FeCl3 is added to excess of hot water is :
View solution →The INCORRECT statements below regarding colloidal solutions is :
View solution →A colloidal system consisting of a gas dispersed in a solid is called a/an :
View solution →The charges on the colloidal CdS sol and TiO2 sol are, respectively :
View solution →The conditions given below are in the context of observing Tyndall effect in colloidal solutions :(A) The diameter of the colloidal particles is comparable to the wavelength of…
View solution →Tyndall effect is more effectively shown by :
View solution →Lyophilic sols are more stable than lyophobic sols because :
View solution →Given below are two statements : Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing. Statement II : For stabilisation of…
View solution →Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :
View solution →Incorrect statement for Tyndall effect is :
View solution →The Zeta potential is related to which property of colloids?
View solution →Which of the following is a correct statement?
View solution →TLC analysis of a mixture having 3 components (A, B, C) using silica gel as the stationary phase gave following Rf values; for A = 0.72, B = 0.48, C = 0.20. Regarding the above…
View solution →For micelle formation, which of the following statements are correct? A. Micelle formation is an exothermic process. B. Micelle formation is an endothermic process. C. The entropy…
View solution →Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Finest gold is red in colour, as the size of the particles…
View solution →Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Dissolved substances can be removed from a colloidal…
View solution →Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values shown by true solutions at same concentration. Statement II :…
View solution →Match List I and List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →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…
View solution →Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial,…
View solution →What happens when a lyophilic sol is added to a lyophobic sol?
View solution →Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The diameter of colloidal particles in solution should not be…
View solution →'Adsorption' principle is used for which of the following purification method?
View solution →The adsorbent used in adsorption chromatography is/are - A. silica gel B. alumina C. quick lime D. magnesia Choose the most appropriate answer from the options given below :
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