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1.
The maximum possible number of hydrogen bonds is a 
molecule can participate is
molecule can participate is
2.
The element having lowest ionisation energy among the following is:
3.
Bond energies in NO, 
and 
are such as
and are such as
4.
Two type FXF angles are present in which of the following molecules? (X=S, Xe, C)
5.
The bond angle between two hybrid orbitals is 
. The percentage of 
-character of hybrid orbital is between
. The percentage of -character of hybrid orbital is between
6.
Which is electron deficient compound?
7.
is insoluble in water because:
is insoluble in water because:
8.
Which of the following is not correct regarding the properties of ionic compounds?
9.
The number of sigma and pi (π) bonds present in benzene respectively are
10.
Which of the following is not tetrahedral?