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1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
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 (Offline)
MCQ (Single Correct Answer)
+4
-1
When metal ‘M’ is treated with NaOH, a white gelatinous precipitate ‘X’ is obtained, which is soluble in excess of NaOH. Compound ‘X’ when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal ‘M’ is
A
Fe
B
Zn
C
Ca
D
Al
3
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
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
$${1 \over n}$$
4
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
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.
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