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Which of the following statements is incorrect regarding physissorptions ?        [AIEEE 2009]
  • a)
    More easily liquefiable gases are adsorbed readily
  • b)
    Under high pressure it results into multi molecular layer on adsorbent surface
  • c)
     Enthalpy of adsorption (ΔHadsorption) is low and positive
  • d)
     If occurs because of van der Waal's forces
Correct answer is 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is incorrect regarding physissorptio...
Physical adsorption is an exothermic process (i.e., ΔH = –ve) but its value is quite low because the attraction of gas molecules and solid surface is weak van der Waals forces.
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Community Answer
Which of the following statements is incorrect regarding physissorptio...
Enthalpy of adsorption is -ve as it is exothermic process since heat is released
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Read the passage given below and answer the following questions:The amount of moisture that leather adsorbs or loses is determined by temperature, relative humidity, degree of porosity, and the size of the pores. Moisture has great practical significance because its amount affects the durability of leather, and in articles such as shoes, gloves and other garments, the comfort of the wearer. High moisture content accelerates deterioration and promotes mildew action. On the other hand, a minimum amount of moisture is required to keep leather properly lubricated and thus prevent cracking. The study indicates that adsorption of moisture by leather is a multi- molecular process and is accompanied by low enthalpies of adsorption. Further at 75-percent relative humidity, the adsorption is a function of surface area alone. Untanned hide and chrome- tanned leathers have the largest surface areas. The leathers tanned with vegetable tanning materials have smaller surface areas since they are composed of less hide substance and the capillaries are reduced to smaller diameters, in some cases probably completely filled by tanning materials. This process of tanning occurs due to mutual coagulation of positively charged hide with negatively charged tanning material. The result of the study indicated that untanned hide and chrome-tanned leather absorb the most water vapour.In these questions a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices.Assertion (

Which of the following statements is incorrect regarding physissorptions ? [AIEEE 2009]a)More easily liquefiable gases are adsorbed readilyb)Under high pressure it results into multi molecular layer on adsorbent surfacec)Enthalpy of adsorption (ΔHadsorption) is low and positived)If occurs because of van der Waal's forcesCorrect answer is 'C'. Can you explain this answer?
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Which of the following statements is incorrect regarding physissorptions ? [AIEEE 2009]a)More easily liquefiable gases are adsorbed readilyb)Under high pressure it results into multi molecular layer on adsorbent surfacec)Enthalpy of adsorption (ΔHadsorption) is low and positived)If occurs because of van der Waal's forcesCorrect answer is 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of the following statements is incorrect regarding physissorptions ? [AIEEE 2009]a)More easily liquefiable gases are adsorbed readilyb)Under high pressure it results into multi molecular layer on adsorbent surfacec)Enthalpy of adsorption (ΔHadsorption) is low and positived)If occurs because of van der Waal's forcesCorrect answer is 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is incorrect regarding physissorptions ? [AIEEE 2009]a)More easily liquefiable gases are adsorbed readilyb)Under high pressure it results into multi molecular layer on adsorbent surfacec)Enthalpy of adsorption (ΔHadsorption) is low and positived)If occurs because of van der Waal's forcesCorrect answer is 'C'. Can you explain this answer?.
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