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Q1. A type-writer constitutes a machine.

(a) True
(b) False
(c)
(d)

Q2. For the reaction step to be the controlling mechanism in a catalytic reversible reaction, which of the following is valid?

(a) Rate of adsorption > Rate of desorption
(b) Rate of adsorption < Rate of desorption
(c) Rate of adsorption = Rate of desorption
(d) Rate of adsorption ? Rate of desorption

Q3. The sequence of steps in a heterogeneous catalytic reaction is ____

(a) Diffusion ? Adsorption ? Reaction ? Desorption ? Diffusion ? Mass transfer ? Mass transfer
(b) Mass transfer ? Diffusion ? Adsorption ? Reaction ? Desorption ? Diffusion ? Mass transfer
(c) Mass transfer ? Diffusion ? Adsorption ? Desorption ? Diffusion ? Mass transfer ? Reaction
(d) Mass transfer ? Adsorption ? Diffusion Reaction ? Desorption ? Diffusion ? Mass transfer

Q4. The Langmuir Hinshelwood mechanism for equimolar reactant feed is ____

(a) aP(1+bP)2 = -r0
(b) P(1+bP)2 = -r0
(c) aP(bP)2 = -r0
(d) aP(1+bP) = -r0

Q5. A gas phase adsorption reaction is reaction controlling. The reaction follows Eley ? Rideal mechanism, represented by A + B ? R. If the product also adsorbs, which of the following rate expressions is true?

(a) -rA = kPAPB1+kAPA+kRPR
(b) -rA = kPAPB(1+kAPA+kRPR)2
(c) -rA = kPAPB1+kAPA+kRPR
(d) -rA = kPAPBPR(1+kAPA+kRPR)2

Q6. If n is a constant for a particular gas adsorption, the dependence of VVm to the partial pressure of adsorbed gas by Freundlich adsorption is ____

(a) VVm ? pAn2
(b) VVm ? pA1n
(c) VVm ? pAn
(d) VVm ? pA

Q7. According to Langmuir adsorption model, the rate of adsorption of a gas molecule onto the solid surface is ____

(a) Proportional to the square of the partial pressure of the gas
(b) Proportional to the partial pressure of the gas
(c) Inversely proportional to the square of the partial pressure of the gas
(d) Inversely proportional to the partial pressure of the gas

Q8. Which of the following is not an assumption of Langmuir model?

(a) Energy of adsorption of gas molecules to the adsorbent site is different at different adsorbing site
(b) Maximum amount of adsorption corresponds to a monolayer
(c) Desorption rate depends on the amount of material adsorbed onto the solid surface
(d) Gas phase molecules are adsorbed on discrete points on the solid surface

Q9. The variation of Chemisorption with Pressure is ____

(a) Chemisorption increases with increase in pressure
(b) Chemisorption decreases with increase in pressure
(c) Chemisorption increases with decrease in pressure
(d) Change of pressure has no effect on Chemisorption

Q10. Physisorption occurs by Van-der-waal?s forces.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned


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0.2 Gm Of Fine Animal Charcoal Is Mixed With Half Litre Of Acetic

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0.2 Gm Of Fine Animal Charcoal Is Mixed With Half Litre Of Acetic

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Activated Charcoal Is Used To Remove Colouring Matter From Pure Substances. It Works By

Modified 363 Year Ago

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363 Year Ago

Activated Charcoal Is Used To Remove Colouring Matter From Pure Substances. It Works By

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0 Answer
306 views

The Decomposition Of Hydrogen Peroxide Can Be Slowed By The Addition Of Acetamide. The Latter Acts As A

Modified 363 Year Ago

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363 Year Ago

The Decomposition Of Hydrogen Peroxide Can Be Slowed By The Addition Of Acetamide. The Latter Acts As A

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0 Answer
306 views

In The Adsorption Of A Gas On Solid, Freundlich Isotherm Is Obeyed. The Slope Of The Plot Is Zero. Then The Extent Of Adsorption Is

Modified 235 Year Ago

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235 Year Ago

In The Adsorption Of A Gas On Solid, Freundlich Isotherm Is Obeyed. The Slope Of The Plot Is Zero. Then The Extent Of Adsorption Is

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0 Answer
303 views

In Freundlich Adsorption Isotherm, The Value Of 1/n Is

Modified 235 Year Ago

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235 Year Ago

In Freundlich Adsorption Isotherm, The Value Of 1/n Is

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281 views

Choose The Incorrect Statement In Respect Of Physisorption

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235 Year Ago

Choose The Incorrect Statement In Respect Of Physisorption

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0 Answer
280 views

Plot Of Log X/m Against Log P Is A Straight Line Inclined At An Angle Of 45° . When The Pressure Is 0.5 Atm And Freundlich Parameter, K Is 10, The Amount Of Solute Adsorbed Per Gram Of Adsorbent Will

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235 Year Ago

Plot Of Log X/m Against Log P Is A Straight Line Inclined At An Angle Of 45° . When The Pressure Is 0.5 Atm And Freundlich Parameter, K Is 10, The Amount Of Solute Adsorbed Per Gram Of Adsorbent Will

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