1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Which of the following molecules has trigonal planar geometry?
A
BF3
B
NH3
C
PCl3
D
IF3
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Which of the following would have a permanent dipole moment?
A
SiF4
B
SF4
C
XeF4
D
BF3
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
H2O is dipolar, whereas BeF2 is not. It is because
A
the electronegativity of F is greater than that of O
B
H2O involves hydrogen bonding whereas BeF2 is a discrete molecule
C
H2O is linear and BeF2 is angular
D
H2O is angular and BeF2 is linear.
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize
A
lone pair - bond pair repulsion only
B
bond pair - bond pair repulsion only
C
lone pair - lone pair repulsion and lone pair - bond pair repulsion
D
lone pair - lone pair repulsion only.

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