In China, don't leave a clean plate behind.
True - leaving a little bit of food on your plate is a sign that you're full and that you've been provided with more than enough food.
In Chile, you shouldn't use your hands to eat — not even if it's French fries!
True
In Italy, it's ok to order a cappuccino, mocaccino or black coffee after dinner.
False - The only acceptable drink to order is an espresso, because Italians see coffee as a digestive and not as a dessert.