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Doctors Medicines MCQs Q&A

The gas molecules are held on solid surface by _________ in physical adsorption.

The gas molecules are held on solid surface by _________ in physical adsorption. Correct Answer Vander Waal’s forces

Chemisorption is the adsorption when interaction between the solid and the condensed molecules is relatively strong as contrasted with physical adsorption.

Related Questions

“What is the different between height and radius of solid cylinder?” Which of the following option is sufficient alone to find the answer? A) A solid cylinder is made by melting a solid sphere. The radius of cylinder is 3 times the radius of a circle whose area is 154 sq.m. Height of cylinder is equal to the height of cone whose volume is 2772 cubic meters. B) Area of a rectangle whose longer side is ¾ times the radius of a solid cylinder, is 168 sq.m and, Volume of solid cylinder is 2772 cubic meters and its height is 18 m. C) A metallic cone of radius 15m and height 35m is melted into the solid cylinder of radius equal to the radius of a circle whose area is equal to the area of rectangle whose sides are in the ratio 4 : 3 respectively. D) The curved surface area of the solid cylinder is 3 time the surface area of a sphere of radius 7m and height of cylinder is equal to the height of a metallic cone whose curved surface area is 308 sq.m. 
Adsorption when interaction between the solid and the condensed molecules is relatively strong as contrasted with physical adsorption.
In Langmuir’s model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is ______________to the pressure of the gas.
Which of the following statements regarding the adsorption of a gas on a solid is correct? I. The amount of gas adsorbed increases with increase in pressure. II. The amount of gas adsorbed increases with increase in temperature. III. The amount of gas adsorbed increases with increase in the area of the adsorbent.
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.
Which of the following statements about physical absorption are correct? Statement 1: Example for physical absorption is the absorption of carbon dioxide into water. Statement 2: Polar interactions between water and the molecules of the solid play an important role in physical absorption.
The physical process that occurs when gas or liquid molecules are brought into contact with a solid surface and condense on the surface
Which of the following statements regarding the physical adsorption of a gas on surface of solid is not correct?
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)