Post Office Fixed Deposit: There are many types of schemes in the post office. If you like safe investment then you can get very good options in post office scheme. Post Office Time Deposit scheme is also one of them. People usually call it Post Office FD. Through this scheme, you can more than double your money. Meaning if you invest Rs 5 lakh in this scheme, then you can make it more than 10 lakh. For this, you just have to do one thing. Know how it can be done here-