i dont have any bitcoin in my account, but I want to send a dummy transaction of 0.1BTC
and it should be seen on blockchain.info block explorer
You cannot send Bitcoin that you do not have. An unconfirmed transaction is not a dummy transaction. Unconfirmed transactions are real transactions that have not been included in the blockchain yet.
If you want to experiment with Bitcoin, you can try using a little bit of Bitcoin from faucets and experimenting with that, but not much can be done since the amounts are so small. You can also try testnet where you can easily get many (worthless) testnet Bitcoin to play around with. There are faucets for those too that give out significant amounts of testnet coins.