1
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
2
JEE Main 2020 (Online) 5th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Identify the correct molecular picture showing that happens at the critical micellar concentration (CMC) of an aqueous solution of a surfactant ( ◍ polar head; ∼ non-polar tail; ● water). JEE Main 2020 (Online) 5th September Morning Slot Chemistry - Surface Chemistry Question 57 English
A
(C)
B
(A)
C
(D)
D
(B)
3
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
A sample of red ink (a colloidal suspension) is prepared by mixing eosin dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :
A
HCHO
B
Water
C
Eosin dye
D
Egg white
4
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
An ionic micelle is formed on the addition of :
A
excess water to liquid JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Surface Chemistry Question 60 English Option 1
B
excess water to liquid JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Surface Chemistry Question 60 English Option 2
C
liquid diethyl ether to aqueous NaCl solution
D
sodium stearate to pure toluene
JEE Main Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET