What is pseudotropism ?

Q. What is pseudotropism ?

   Definition of pseudotropism.

There are few examples of tautomerism in which case only one tautomeric form has real existence among the two. This phenomenon of such type of tautomerism is called pseudotropism . 
For example, keto-enol tautomerism .

    

Summary :
What is pseudotropism ?

Why sigma bond is more stronger than pi bond ?click here

Why are sigma bond more stronger than pi bond ?

 Why are sigma bond more stronger than pi bond?

 A sigma bond is formed by the face to face overlapping of two 's' orbitals,one 's' and one 'p' orbitals or between two 'p' orbitals.