No, Temple has never won a NCAA National Championship.
North Carolina beat Michigan to win the 1993 NCAA Division I Men's Basketball Championship.
the Florida gators
Yes ... the 1981-82 NCAA season at the age of 19.
Duke Blue Devils beat Butler Bulldogs by 2 points to win the 2010 NCAA Men's National Championship
The Florida Gators defeated the Florida State Seminoles 52-20 to win the 1996 NCAA National Championship.
Oklahoma in 2000 ranked 19
Arkansas razorbacks never won a national championship.
There was no official "NCAA Football Championship" though #1 Texas defeated #2 Navy 28-6 in the Cotton Bowl to win the 1963 national championship by virtue of the AP and UPI polls.