Surface Chemistry — practice questions
54 curated practice questions from Surface Chemistry (Chemistry JEE Advanced, NTA Exams) — 9 medium, 45 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption…
- Emulsions are normally prepared by shaking the two components together vigorously although some kind to emulsifying…
- A graph between x/m and the pressure P of the gas at a constant temperature is called adsorption isotherm. Where x is…
- Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at…
- Oxidation of oxalic acid by acidified KMnO 4 is an example of autocatalysis. Which of the following graph represents…
- Choose the correct reason(s) for the stability of the Lyophobic colloidal particles. (2012)
- For the adsorption of a gas on a solid, the plot of log ( x/m ) versus log P is linear with slope equal to
- Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25°C. For this process, the correct…
- The correct statement(s) about surface properties is(are) (2017)
- The adsorption of a gas on a solid surface varies with pressure of the gas in which of the following manner
- Molar conductivity ( L m ) of aqueous solution of sodium stearate, which behaves as a strong electrolyte, is recorded…
- Ferric hydroxide sol is positively charged colloid. The coagulating power of NO _ 3 ^ - , SO _ 4 ^ 2- and PO _ 4 ^ 3…
- The correct option(s) related to adsorption processes is(are) (2022)
- A graph between x/m and the pressure P of the gas at a constant temperature is called adsorption isotherm. Where x is…
- Coagulation is the process by which the dispersed phase of a colloid is made to aggregate and thereby separate from the…
- Coagulation or demulsification can be done by some of the methods given below I: By addition of substance which would…
- Among the electrolytes Na 2 SO 4 , CaCl 2 , Al 2 (SO 4 ) 3 and NH 4 Cl, the most effective coagulating agent for Sb 2 S…
- Assertion (A): Micelles are formed by surfactant molecules above the critical micelle concentration(CMC). Reason (R) …
- Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of…
- Assertion (A) : Positive catalysts increase the rate of chemical reaction. Reason (R) : Catalysts increase the rate of…
- Which of the following is/are correct about Freunlich’s adsorption isotherm for gases and solutions?
- Adsorption of gases on solid surface is generally exothermic because
- Assertion (A): For adsorption ∆G, ∆H, ∆S all have -ve values. Reason (R) : Adsorption is a exothermic process in which…
- Emulsions are normally prepared by shaking the two components together vigorously although some kind to emulsifying…
- The ability of the catalyst to direct the reaction to yield particular product is called
- Coagulation is the process by which the dispersed phase of a colloid is made to aggregate and thereby separate from the…
- Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of…
- Which of the following is most effective in coagulating a ferric hydroxide sol
- The correct statement(s) pertaining to the adsorption of a gas on a solid surface is(are) (2011)
- The correction statement(s) related to colloids is(are) (2021)
- When O 2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O 2 . The true statement(s)…
- Assertion(A) : For coagulation of positively charged sols, [Fe(CN) 6 ] 4– ion has higher coagulating power than that of…
- In neutralisation of KI by AgNO 3 positive charge is due to absorption of
- The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of…
- Coagulation is the process by which the dispersed phase of a colloid is made to aggregate and thereby separate from the…
- The colloidal solutions of gold prepared by different methods have different colors due to:
- Among the electrolytes Na 2 SO 4 , CaCl 2 , Al 2 (SO 4 ) 3 and NH 4 Cl, the most effective coagulating agent for Sb 2 S…
- There are certain properties related to physical adsorption I : Reversible II : Formation of unimolecular layer III …
- In the following isotherm
- Graph between x m and log P is a straight line inclined at an angle =45^ . When pressure is 0.5 atm and log k = 0.699…
- Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at…
- Assertion(A) : A reaction cannot become fast by itself unless a catalyst is added in the reaction mixture. Reason(R) …
- Assertion (A): The extent of adsorption of CO 2 is much more higher than of H 2 . Reason(R): CO 2 (g) has higher…
- Energy of activation of forward and backward reaction are equal in cases (numerical values) where
- Colloidal paints are used to paint metallic portions of cars. This application is based on
- Coagulation is the process by which the dispersed phase of a colloid is made to aggregate and thereby separate from the…
- Statement-1 : Micelles are formed by surfactant molecules above the critical micellar concentration (CMC). Statement-2…
- Following are the events taking place to explain adsorption theory I : Desorption II : Diffusion of the reactants along…
- A graph between x/m and the pressure P of the gas at a constant temperature is called adsorption isotherm. Where x is…
- As 2 S 3 sol has a negative charge. Capacity to precipitate it is highest in
- Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at…
- Assertion (A): Micelles are formed by surfactant molecules above the critical micelle concentration (CMC). Reason (R)…
- In Freundlich adsorption isotherm, adsorption is proportional to pressure P as
- Adsorption of gases on solid surface is generally exothermic because