Multiple choice general knowledge Coffee contains 65 to 115 milligrams of Caffeine for eight-ounce cup? True False Reveal answer Fill a bubble to check yourself A Correct answer Explanation Coffee typically contains 65-115 mg of caffeine per 8-ounce cup depending on the bean type and brewing method. Robusta beans have more caffeine (around 80-135 mg) than Arabica (around 65-115 mg). This range is accurate.