The graph between logxm vs log p is given below:

What is the value of the slope?

1. 12n

2. n

3. 1n

4.1n2

Subtopic:  Adsorption Isotherm |
 92%
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The correct match amongst the following is -

Physical states of the dispersed phase and dispersion medium Type of colloid
a. D.P = solid; D.M = liquid  i. Foam
b. D.P = solid; D.M = gas ii. Emulsion
c. D.P = liquid; D.M = liquid  iii. Aerosol
d. D.P = gas; D.M = liquid  iv. Sol

(D.P = dispersed phase, and D.M = dispersion medium)

Options:

a b c d
1. iv iii ii i
2. iii iv ii i
3. iv ii iii i
4. i iii ii iv
Subtopic:  Colloidal Solution |
 81%
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Shape selective catalysis is:

1. Catalytic reaction depends upon the pore structure of the catalyst.
2. Catalytic reactions depend on the size of the reactant and the product molecules.
3. Both '1' and '2'
4. None of the above.
Subtopic:  Catalyst |
 91%
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Heterogeneous catalysis is shown in:

1. \(2SO_{2}{(g)} \ + \ O_{2}{(g)} \ \xrightarrow[]{Pt(s)} \ 2SO_{3}{(g)}\)
2. \(4NH_{3}{(g)} \ + \ 3H_{2}{(g)} \ \xrightarrow[]{Fe(s)} \ 2NH_{3}{(g)}\)
3. \(Vegetable \ oil(l) \ + \ H_{2}(g) \ \xrightarrow[]{Ni(s)} \ Vegetable \ ghee(s)\)
4. All of the above

Subtopic:  Catalyst |
 85%
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The phenomenon of the scattering of light by a colloidal solution known as:

1. Zeeman effect.

2. Tyndall effect.

3. Electrophoresis.

4. None of the above.

Subtopic:  Colloidal Solution |
 96%
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Enzymes are:

1. Biochemical catalysts.

2. Protein molecules of high molecular masses.

3. Both (1) and (2)

4. None of the above.

Subtopic:  Catalyst |
 92%
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Which of the following statement is false?

1. Adsorption is a reversible process and is accompanied by a decrease in pressure.
2. Adsorption decreases with an increase in pressure.
3. Adsorption is an exothermic process.
4. The magnitude of physisorption adsorption decreases with an increase in temperature.

Subtopic:  Adsorption and Absorption |
 75%
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The probable reasons of the exothermic nature of adsorption is:

1. Adsorption leads to a decrease in the residual forces on the surface of the adsorbent.
2. ∆S is negative.
3. Both (1) and (2) 
4. None of the above.

Subtopic:  Adsorption and Absorption |
 82%
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An adsorption isotherm is a plot between:

1. The extent of adsorption \(({x \over m})\) against the pressure of gas (P) at constant V.
2. The extent of adsorption \(({x \over m})\) against the pressure of gas (P) at constant T.
3. The extent of absorption \(({x \over m})\) against the volume of gas (V) at constant P.
4. The extent of absorption \(({x \over m})\) against the pressure of gas (P) at constant T.
Subtopic:  Adsorption Isotherm |
 81%
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The factors that influence the adsorption of a gas on a solid is/are:

1. Nature of the gas.

2. Surface area of the solid.

3. Effect of pressure.

4. All of the above.

Subtopic:  Adsorption and Absorption |
 95%
From NCERT
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