1
JEE Main 2019 (Online) 9th January Evening Slot
+4
-1
For coagulation of arsenious sulphate sol, which one of the following salt solution will be most effective ?
A
BaCl2
B
AlCl3
C
NaCl
D
Na3PO4
2
JEE Main 2019 (Online) 9th January Morning Slot
+4
-1
Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, x is the mass of the gas adsorbed on mass m of the adsorbent at pressure P. $${x \over m}$$ is proportional to :

A
P2
B
P$${^{{1 \over 4}}}$$
C
P$${^{{1 \over 2}}}$$
D
P
3
JEE Main 2018 (Online) 16th April Morning Slot
+4
-1
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
4
JEE Main 2018 (Offline)
+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
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