Hi Apoorva,
The 0x0B code indicates that the µC is not able to raise the chip on SPI comms - not that it is unable to recognise it. Try wiring both PIN3 & PIN7 of the W25Q64JV to VCC instead of wiring one to GND and one to VCC. From what I understand, the IO2 (PIN3) and IO3 (PIN7) need to be pulled up, not down, when they are not in use.
Let me know if that works.
Cheers!