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1
JEE Main 2021 (Online) 18th March Evening Shift
+4
-1
The oxide that shows magnetic property is :
A
MgO
B
SiO2
C
Mn3O4
D
Na2O
2
JEE Main 2021 (Online) 17th March Evening Shift
+4
-1
Amongst the following, the linear species is :
A
O3
B
Cl2O
C
N$$_3^ -$$
D
NO2
3
JEE Main 2021 (Online) 17th March Morning Shift
+4
-1
A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is :
A
trigonal pyramidal
B
T-shaped
C
see-saw
D
planar triangular
4
JEE Main 2021 (Online) 16th March Morning Shift
+4
-1
Given below are two statements : one is labeled as Assertion A and the other is labelled as Reason R :

Assertion A : The H$$-$$O$$-$$H bond angle in water molecule is 104.5$$^\circ$$.

Reason R : The lone pair - lone pair repulsion of electrons is higher than the bond pair - bond pair repulsion.

In the light of the above statements, choose the correct answer from the options given below :
A
Both A and R are true, and R is the correct explanation of A
B
A is true but R is false
C
A is false but R is true
D
Both A and R are true, but R is not the correct explanation of A
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