What is roc in case of bank loan for a property?

ROC is as such Registration certificate issued to company by Registrar (again ROC), which will be not be required in case of individual loan applicants. But if the property for which home loan is  applied by Individual, is registered....... the alternative would be receipt of registration certificate of the property as issued by sub-registrar. 

The bank might have issued you general form as applicable to all the categories of applicants, so if it is not applicable in your case.... you may leave it.

You can get more clarification from the helpline number of the bank
 

In real-estate market many developers take construction financial ( CF finance) when any customer apply for home loan that CF finance charge comes in search report because that financial institutions create mortgage charge so that customer require NOC means ROC from CF finance company for creating a mortgage on perticular flat