Surface Chemistry: JEE Main Chemistry Previous Year Questions

248 previous year questions from Surface Chemistry. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $For a linear plot of log(x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct? (k and n are constants)$
2. $A sol of AgI is prepared by mixing equal volumes of 0.1 M AgNO_{3} and 0.2 MKI, which of the following statement is correct?$
3. $20 mL of 0.5 M NaCl is required to coagulate 200 mL of As_{2} S_{3} solution in 2 hours. The coagulating value of NaCl is .$
4. $Which of the following salt solutions would coagulate the colloid solution formed when F e C l_{3} is added to NaOH solution, at the fastest rate?$
5. $Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?$
6. $The coagulation of 200 ml of a positive colloid took place when 0.73 g of HCl was added to it without changing the volume much. The flocculati\dots$
7. $Which from following catalyst is used in decomposition of KClO_{3} ?$
8. $Which of the following is not a favourable condition for physical adsorption?$
9. $Rate of physical adsorption increases with$
10. $Which of the following is an example of a multi molecular colloid?$
11. $At the critical micelle concentration (CMC) the surfactant molecules$
12. $Which of the following colloids cannot be easily coagulated?$
13. $Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambinent condition is:$
14. $Which one of the following characteristics is not correct for physical adsorption?$
15. $The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is . Gem stones, paints, smoke, cheese, milk, hair cream, insectici\dots$
16. $Match List-I with List-II (matching question)$
17. $Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Amongst He, Ne, Ar and Kr; 1 g of activated charcoal ad\dots$
18. $Lyophilic sols are more stable than lyophobic sols because :$
19. $A hard substance mells at high temperature andis an insulator in both solid and in molten state. This solid is most likely to be a / an :$
20. $Among the following, the INCORRECT statement about colloids is:$
21. $Colloidal solution commonly used in the treatment of skin disease is$
22. $Incorrect statement for Tyndall effect is :-$
23. $The most effective coagulating agent among the options for Sb_{2} S_{3} sol is$
24. $Adsorption of a gas follows Freundlich adsorption isotherm. If x is the mass of the gas adsorbed on mass m of the adsorbent, the correct plot of \frac{x}{m} versus\dots$
25. $Which of the following cations will have minimum flocculation value for arsenic sulphide sol?$

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Surface Chemistry: JEE Main Chemistry Previous Year Questions

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