it is like asking which one would survive longer, cars or combustion engines! bitcoin is based on blockchain technology and it is the one that introduced it to the world. bitcoin is also the one that is improving this technology and as the technology grows bitcoin grows and vice versa. they are not separate, they are one thing.
It's like separating the brain from a human body but Blockchain technology can be used in many many ways and not just for crypto currencies such as Bitcoin. I have read some article about the Blockchain technology and its future uses such as determining a fake and a genuine medicine with the help of this technology that was created by none other by the legendary "Satoshi Nakamoto" way back on 2008, this guy or whoever he is, he is a real genius and his invention will surely be more useful in the future.