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Surface Chemistry

14 questions · Chemistry · JEE Advanced
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Surface Chemistry

14 questions · Chemistry · JEE Advanced

  1. Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from 10mgg−1 and 16mgg−1 aqueous phenol solutions, the concentrations of…2025 · Shift 2 · Q11 · Numerical
  2. To form a complete monolayer of acetic acid on 1 g of charcoal, 100 mL of 0.5M acetic acid was used. Some of the acetic acid remained unadsorbed. To neutralize the unadsorbed acetic acid, 40…2024 · Shift 2 · Q8 · Numerical
  3. Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium. (II) For emulsions, both the dispersed phase and the dispersion medium are liquid.…2023 · Shift 2 · Q2 · MCQ
  4. The correct option(s) related to adsorption processes is(are)2022 · Shift 1 · Q10 · Multiple correct
  5. The correct statement(s) related to colloids is (are)2021 · Shift 1 · Q13 · Multiple correct
  6. The correct statement(s) about surface properties is (are)2017 · Shift 2 · Q13 · Multiple correct
  7. When O2​ is adsorbed on a metallic surface, electron transfer occurs from the metal to O2​. The true statement(s) regarding this adsorption is(are)2015 · Shift 2 · Q4 · Multiple correct
  8. Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25oC. For this process, the correct statement is2013 · Shift 1 · Q6 · MCQ
  9. Choose the correct reason for the stability of the Iyophobic colloidal particles2012 · Shift 1 · Q4 · Multiple correct
  10. The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV… Includes diagram2012 · Shift 2 · Q20 · Multiple correct
  11. The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)2011 · Shift 1 · Q1 · Multiple correct
  12. 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 3​ sol is2009 · Shift 1 · Q4 · MCQ
  13. Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is:2008 · Shift 2 · Q9 · MCQ
  14. Statement 1 : Micelles are formed by surfactant molecules above the critical micellar concentration (CMC). Statement 2 : The conductivity of a solution having surfactant molecules decreases sharply at the CMC.2007 · Shift 1 · Q13 · MCQ