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1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
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Which one of the following is not a property of physical adsorption?
A
Higher the pressure, mre the adsorption
B
Lower the temperature, more the adsorption
C
Greater the surface area, more the adsorption
D
Unilayer adsorption ocurs
2
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
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If x gram of gas is adsorbed by m gram of adsorbent at pressure P, the plot of log $${x \over m}$$ versus log P is linear. The slope of the plot is :
(n and k are constants and n > 1)
A
2 k
B
log k
C
n
D
$${1 \over n}$$
3
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
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Which of the following statements about colloids is False ?
A
Freezing point of colloidal solution is lower than true solution at same concentration of a solute.
B
Colloidal particles can pass through ordinary filter paper.
C
When silver nitrate solution is added to potassium iodide solution, a negatively charged colloidal solution is formed.
D
When excess of electolyte is added to colloidal solution, colloidal particle will be precipitated.
4
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
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-1
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Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of log $${x \over m}$$ versus log p gives a straight line with slope equal to 0.5, then:

( $${x \over m}$$ is the mass of the gas adsorbed per gram of adsorbent)
A
Adsorption is independent of pressure.
B
Adsorption is proportional to the pressure.
C
Adsorption is proportional to the square root of pressure.
D
Adsorption is proportional to the square of pressure.
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