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1
JEE Main 2021 (Online) 24th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
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In Freundlich adsorption isotherm, slope of AB line is :

JEE Main 2021 (Online) 24th February Morning Shift Chemistry - Surface Chemistry Question 54 English
A
$${1 \over n}$$ with $$\left( {{1 \over n} = 0\,to\,1} \right)$$
B
n with (n, 0.1 to 0.5)
C
$$\log {1 \over n}$$ with $$\left( {n < 1} \right)$$
D
log n with (n > 1)
2
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Kraft temperature is the temperature :
A
below which the aqueous solution of detergents starts freezing.
B
above which the formation of micelles takes place.
C
below which the formation of micelles takes place.
D
above which the aqueous solution of detergents starts boiling.
3
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Adsorption of a gas follows Freundlich adsorption isotherm. If x is the mass of the gas adsorbed on mass
m of the adsorbent, the correct plot of $${x \over m}$$ versus p is :
A
JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Surface Chemistry Question 57 English Option 1
B
JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Surface Chemistry Question 57 English Option 2
C
JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Surface Chemistry Question 57 English Option 3
D
JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Surface Chemistry Question 57 English Option 4
4
JEE Main 2020 (Online) 5th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
An Ellingham diagram provides information about :
A
the temperature dependence of the standard Gibbs energies of formation of some metal oxides
B
the pressure dependence of the standard electrode potentials of reduction reactions involved in the extraction of metals
C
the conditions of pH and potential under which a species is thermodynamically stable
D
the kinetics of the reduction process
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