The rate of chemisorption :

The rate of chemisorption :
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The rate of chemisorption : A. decreases with increase of pressure B. increases with increase ... of pressure D. is independent of temperature
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The given graph/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions

Description : The given graph/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions

Last Answer : The given graph/data I, II, III and IV represent general trends observed for different ... D. IV is chemisorption and III is chemisorption

Which of the following is not a characteristic of chemisorption?

Description : Which of the following is not a characteristic of chemisorption?

Last Answer : Which of the following is not a characteristic of chemisorption? A. It is irreversible B. It is ... of adsorption is generally around 80 - 240 kJ

Which of the following statements about chemisorption is not applicable?

Description : Which of the following statements about chemisorption is not applicable?

Last Answer : Which of the following statements about chemisorption is not applicable? A. It involves chemical forces ... D. It does not require activation energy

Physisorption and chemisorption. Give one example.

Description : Physisorption and chemisorption. Give one example.

Last Answer : Distinguish between the following : Physisorption and chemisorption. Give one example.

Chemisorption (chemical adsorption) is (A) Same as "Van der Waals" adsorption (B) Characterised by adsorption of heat (C) An irreversible phenomenon (D) A reversible phenomenon

Description : Chemisorption (chemical adsorption) is (A) Same as "Van der Waals" adsorption (B) Characterised by adsorption of heat (C) An irreversible phenomenon (D) A reversible phenomenon

Last Answer : (C) An irreversible phenomenon

Pick out the wrong statement. (A) With decrease in feed temperature, the number of plates required for binary distillation decreases for a given ‘L/V’ ratio (B) The extraction per unit of total height for a short packed column is more effective than for a tall column, in case of liquid-liquid extraction(C) Natural draft cooling towers are made of ferroconcrete and its cross￾section is wider at the bottom(D) Vander wall adsorption is also called chemisorption

Description : Pick out the wrong statement. (A) With decrease in feed temperature, the number of plates required for binary distillation decreases for a given L/V' ratio (B) The extraction per unit ... and its cross￾section is wider at the bottom (D) Vander wall adsorption is also called chemisorption

Last Answer : (D) Vander wall adsorption is also called chemisorption

Why physical adsorption is multimolecular whereas chemisorption is unimolecular ?

Description : Why physical adsorption is multimolecular whereas chemisorption is unimolecular ?

Last Answer : Chemisorption takes place as a result of reaction between adsorbent and adsorbate. When the surface of the adsorbent is covered with one layer, no further reaction can take place. Physical adsorption is ... any number of layers may be formed one over the other on the surface of the adsorbent.

Pick out the wrong statement. (A) Exit age description function (E) and internal age distribution function (I) are related as, E = -(dI/dθ) (B) Chemisorption studies are useful in the determination of catalyst surface area and pore size distribution (C) A higher temperature favours the reaction of higher activation energy (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

Description : Pick out the wrong statement. (A) Exit age description function (E) and internal age distribution function (I) are related as, E = -(dI/dθ) (B) Chemisorption studies are useful in the ... energy (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

Last Answer : (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

10. In Freundlich Adsorption isotherm, the value of 1/n is: (1) 1 in case of chemisorption (2) between 0 and 1 in all cases (3) between 2 and 4 in all cases (4) 1 in case of physical adsorption

Description : 10. In Freundlich Adsorption isotherm, the value of 1/n is: (1) 1 in case of chemisorption (2) between 0 and 1 in all cases (3) between 2 and 4 in all cases (4) 1 in case of physical adsorption

Last Answer : between 0 and 1 in all cases