It is common mistake of people make, when said the one investment can double the capital in 10 years or so, it sounds great but in real fact, it is 7.2% annually.
Although it is an ok return rate attactive than FD but bare in mind you have to commit for 10 years before can see the fruit.
It is an insurance scheme so if you terminate half way so you may lose out depended on their rules.
So one need to find out what rules are stated in the scheme, don't just blindly invest in then regret, 10 years is not a short period.