Punjab National Bank (BSE:532461) (PNB) is planning to sell its INR 7.8 billion exposure in Jayaswal Neco Industries Limited (BSE:522285) to asset reconstruction companies and other investors through the Swiss challenge method based on a bid in hand from an investor interested in buying the asset. PNB has also put on sale 24 other bad loans aggregating INR 1,779 crore, of which 12 will be offered on a full-cash basis.