Bissoy.com
Login
Doctors
Medicines
MCQs
Q&A
Ask
Merit Test
Questions
Courses
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?
Langmuir
There is no dynamic equilibrium between successive layer
The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process
None of these
LohaHridoy
0
Edit
5
views
2025-01-04 04:42
1
Answers
AhmedNazir
Answer: Option 2
Let'
0
Thanks
5
views
Answered
2022-09-01 13:21
Report
Edit
Call
Related Questions
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)?
1 Answers
5
Views
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)?
1 Answers
4
Views
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)?
1 Answers
5
Views
The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle).?
1 Answers
4
Views
Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle).?
1 Answers
7
Views
If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the?
1 Answers
4
Views
Which of the following factors control the deactivation of a porous catalyst pellet?
1 Answers
4
Views
Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?
1 Answers
7
Views
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.?
1 Answers
5
Views
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?
1 Answers
4
Views
কোরআন
হাদিস
চাকুরি প্রস্তুতি
বিশ্ববিদ্যালয় ভর্তি
মেডিকেল SBA
12
এইচএসসি
10
এসএসসি
8
জেএসসি
এক্সাম দিয়ে মেধা যাচাই করুন
Job Preparation (1125)
Admission (754)
এসএসসি (10)
এইচএসসি (5)
Login Required
You need to log in to continue.
Login
Cancel
Download Required
You need to download the app to make a call.
Download
Cancel