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1
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The reaction of NO with N2O4 at 250 K gives :
A
N2O3
B
N2O5
C
N2O
D
NO2
2
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct statement with respect to dinitrogen is :
A
N2 is paramagnetic in nature
B
it can be used as an inert diluent for reactive chemicals
C
it can combine with dioxygen at 25oC
D
liquid dinitrogen is not used in cryosurgery
3
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Reaction of ammonia with excess Cl2 gives :
A
NH4Cl and N2
B
NH4Cl and HCl
C
NCl3 and HCl
D
NCl3 and NH4Cl
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Boron and silicon of very high purity can be obtained through :
A
Liquation
B
Electrolytic refining
C
Zone refining
D
Vapour phase refining
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