1
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.
2
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+
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The correct sequence of increasing covalent character is represented by
A
LiCl < NaCl < BeCl2
B
BeCl2 < LiCl < NaCl
C
NaCl < LiCl < BeCl2
D
BeCl2 < NaCl < LiCl
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The surface tension of which of the following liquid is maximum ?
A
C2H5OH
B
CH3OH
C
H2O
D
C6H6

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