1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Which of the following species has a linear shape?
A
O3
B
NO2$$-$$
C
SO2
D
NO2+
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The electronegativity difference berween N and F is greater than that between N and H yet the dipole moment of NH3 (1.5D) is larger than that of NF3 (0.2 D). This is because
A
in NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same direction
B
in NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction
C
in NH3 the atomic dipole and bond dipole are in the same direction whereas in NF3 these are in opposite directions
D
in NH3 as well as in NF3 the atomic dipole and bond dipole are in opposite directions.
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The correct order in which the O $$-$$ O bond length increases in the following is
A
O2 < H2O2 < O3
B
O3 < H2O2 < O2
C
H2O2 < O2 < O3
D
O2 < O3 < H2O2
4
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
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