This chapter is currently out of syllabus
1
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A mixture of gases O2, H2 and CO are taken in a closed vessel containing charcoal. The graph that represents the correct behaviour of pressure with time is :
A
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Surface Chemistry Question 77 English Option 1
B
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Surface Chemistry Question 77 English Option 2
C
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Surface Chemistry Question 77 English Option 3
D
JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Surface Chemistry Question 77 English Option 4
2
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
For the following Assertion and Reason, the correct option is
Assertion : For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7-9 elements.
Reason : The reactants are most strongly adsorbed on group 7-9 elements.
A
Both assertion and reason are true and the reason is the correct explanation for the assertion.
B
The assertion is true, but the reason is false.
C
Both assertion and reason are true but the reason is not the correct explanation for the assertion.
D
Both assertion and reason are false.
3
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order :
A
AICl3 > K3[Fe(CN)6] > K2CrO4 > KBr = KNO3
B
K3[Fe(CN)6] < K2CrO4 < KBr = KNO3 = AlCl3
C
K3[Fe(CN)6] < K2CrO4 < AlCl3 < KBr < KNO3
D
K3[Fe(CN)6] > AlCl3 > K2CrO4 > KBr > KNO3
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Among the following, the INCORRECT statement about colloids is :
A
The range of diameters of colloidal particles is between 1 and to 1000 nm
B
they are larger than small molecules and have high molar mass
C
They can scatter light
D
The osmotic pressure of a colloidal solution is of higher order than the true solution at the same concentration.
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12