What are soiled, mutilated and imperfect banknotes?

Soiled note means a note which, has become dirty due to usage and also includes a two piece note pasted together wherein both the pieces presented belong to the same note, and form the entire note

 Mutilated banknote is a banknote, of which a portion is missing or which is composed of more than two pieces.

 Imperfect banknote means any banknote, which is wholly or

partially, obliterated, shrunk, washed, altered or indecipherable but does not include a mutilated banknote.

NATIONALISATION OF BANKS 

 Nationalisation of  Imperial Bank of India and its conversion into State Bank of India in July 1955.

Conversion of 8 major State-associated banks into subsidiary banks of SBI in 1959.

 Nationalisation of 14 Indian scheduled banks in July 1969.

 Nationalisation of 6 more banks in April 1980 & Indian bank merged into Punjab National Bank.