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1
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the magnetic moment of a dioxygen species is 1.73 B.M, it may be :
A
$$O_2^ - $$ or $$O_2^ + $$
B
O2, $$O_2^ - $$ or $$O_2^ + $$
C
O2 or $$O_2^ + $$
D
O2 or $$O_2^ - $$
2
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Arrange the following bonds according to their average bond energies in descending order :
C–Cl, C–Br, C–F, C–I
A
C–Br > C–I > C–Cl > C–F
B
C–Cl > C–Br > C–I > C–F
C
C–I > C–Br > C–Cl > C–F
D
C–F > C–Cl > C–Br > C–I
3
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The bond order and the magnetic characteristics of CN- are :
A
3, paramagnetic
B
$$2{1 \over 2}$$, paramagnetic
C
3, diamagnetic
D
$$2{1 \over 2}$$, diamagnetic
4
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The relative strength of interionic/intermolecular forces in decreasing order is :
A
dipole-dipole $$>$$ ion-dipole $$>$$ ion-ion
B
ion-dipole $$>$$ dipole-dipole $$>$$ ion-ion
C
ion-dipole $$>$$ ion-ion $$>$$ dipole-dipole
D
ion-ion $$>$$ ion-dipole $$>$$ dipole-dipole
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