Once you have completed your training, there is a state certification exam you need to pass in order to become a Certified Nursing Assistant. 1  You can begin preparing by knowing what to expect. 2  Most state CNA exams are divided into two sections: the written section and a clinical skills test. A CNA's job is hands-on. 2  You provide care to patients, residents, clients, and customers. 3  It's a busy job and hours are usually long. 4  A CNA's work is generally in the realm of non-invasive procedures.
1 Cover tightly. 2  Preheat oven to 425 degrees F for 15 minutes. 3  Place the roast in the oven and immediately reduce the temperature down to 200 degrees F. 4  Roast for about 4 hours or until the meat is falling-apart tender (cooking time will vary depending on the size of the roast). Place the roast in the oven and immediately reduce the temperature down to 200 degrees F. 2  Roast for about 4 hours or until the meat is falling-apart tender (cooking time will vary depending on the size of the roast).
Quick Answer. A beef roast is cooked in a 375 degrees Fahrenheit oven for 20 minutes per pound. The exact cooking time depends on the size of the roast. The roast is done when it reaches between 135 and 150 degrees Fahrenheit on a meat thermometer. Continue Reading.