[sumitsaurav]

can anybody tell how intramolecular hydrogen bonding increases stability?

[Borek]

You have to show your attempts at solving the question to receive help. This is a forum policy.

[Babcock_Hall]

It might also help to define the scope of your question.  What sort of molecules are you considering?

[zsinger]

H bound to N,O,or F is an extremely strong bond.  Think about bond dissociation energies of the molecules you are referring to.  You will find that these bonds are easy to make/hard to break!  Thats your starter!  Best of luck!

[Enthalpy]

H bound to N,O,or F is an extremely strong bond.  Think about bond dissociation energies of the molecules you are referring to.  You will find that these bonds are easy to make/hard to break!  Thats your starter!  Best of luck!

The question was about hydrogen bonds.