New Delhi, Nov. 6 -- If you are a conservative investor, it is crucial to choose investment options that offer guaranteed returns. There are several post office savings schemes which deliver guaranteed returns in the range of 7-8% a year.

From NSC and Sukanya Samriddhi Account to PPF, there are scores of post office schemes that offer assured returns.

Here, we list seven popular post office schemes which give assured returns to investors.

I. Public Provident Fund: This is among the most popular small savings schemes, which offers 7.1% a year (compounded annually). You can invest anywhere in the range of Rs.500 to Rs.1.50 lakh.

Deposits can be made in a lump sum or in instalments. The account becomes mature after 15 years, excluding th...