A felon cannot get a hazmat endorsement anywhere in the US. This is a federal matter, and does not vary between states. Beginning in 2005, a TSA background check and fingerprinting became required for a hazmat endorsement. This was in response to both the September 11th attacks and the theft of two propane tankers (later recovered) in Texas which were feared to have been stolen for the purpose of a terrorist attack (although someone who'll steal a propane tanker isn't likely to care about having an endorsement or not).
No
no
Yes
no
No it is a Class 2 Misdemeanor
A felony conviction will cause your hazmat endorsement to be rejected nationwide.
Generally speaking, no. A felon cannot own or even possess a handgun legally. The exception to that is if the felon has had his rights restored.
No. N.C. GS 14-401.6
Yes. However, your chances of finding employment as a CDL driver with a felony conviction are slim, and you won't be eligible to receive a Hazmat endorsement.
Not in Illinois, nor any other state.
You need to talk to a lawyer for a current, correct and legal answer.
You need to consult with a lawyer familiar with firearms law.