I got 7 out of 11.
With as many international Dopers on board, I’d be interested to see how many of these answers are accurate.
9/11.
I missed the England and Poland questions although most were just educated guesses.
7 out of 11… 
Mostly guessing. I knew only very few of them for a fact.
There used to be a neat site where you could check out formal business lunch practices and Dos and Do nots for various countries. I heartily suggest reading up on stuff in a Travel Guide before becoming friendly with the natives ! hehe
5 out of 11. I guess someone had to lower the bar. Too bad it had to be me :smack:
8 of 11. I think the Chinese one is a bit off. So far as I’ve been told, Chinese mothers get on their children’s cases about eating every grain of rice, because if they don’t, they’ll get a pockmark on their face for every grain left in the bottom of the bowl. I don’t think mothers put an emphasis on stuffing their children so full that they leave leftovers.
However, in more formal eating situations (like a business banquet) it is considered rude for the host to not give his guest enough food so that the guest is unable to finish. In general, I’d say that hosts order at least 20% to 70% more food than anyone could possibly eat, depending on the importance of the occasion.
9/11. Sweeping the stuff on the floor?!?!
Got tricked by the “dinner is lunch” question, though.
8 of 11 - the fish one and the crumby one caught me off guard. I don’t recall which other I missed - but I was a bit dissappointed in the Canadian one ;).
8 out of 11.
Missed the Japanese one, the fish one, the Spanish one.
We have e.g. Kentucky Fried Chicken chains here in the UK, so we wouldn’t be bothered by Americans eating fried chicken with their hands.
I agree, my Chinese-Thai spouse taught me that every grain of rice should be respected, so I answered C on that one. Also not so sure about the German potato one. I don’t ever recall seeing anyone cut anything with a fork in Germany, but maybe I just missed that.
10/11 (got the Polish one wrong). I thought the English one was a bit archaic, as the rules about knives and forks are on the wane - many foodstuffs in England are eaten with the hands.
It’s correct, but a bit obscure. Hardly anyone will care in all but the most formal situations. (9/11)
It’s false. I don’t know where people got that idea, but it’s bullshit. I’ve seen it in one other quiz like this as well.
It is, in fact, considered rude to burp openly, same as it is in America.
5/11, mostly through guesswork. Some of them seemed designed just to trip you up though—‘left-handed fork’ 
Oh, and I got 9/11.
8/11. Fish, trash on the floor, and I don’t remember the other.
8/11, mostly by (slightly) educated guesswork.
Funnily enough, I got the English one wrong, despite having lived there all my life! I knew it was acceptable to eat with the hands, but I went with the stereotype answer. I’ve never heard of asking for utensils being an insult to the chef. Also missed Spanish one (I’ve visited Spain twice!) - throwing stuff on the floor seems stupid! And the Polish one - special knowledge needed there.
8/11 but it’s not true.
The answer they give for Spanish bars is WRONG.
While waiters in bars know they will have to clean up, it is much nicer for them, for other customers and for your own shoes if you put stuff in your dish. Whether you got a tapa or a drink, it came with a dish. There is also often an ashtray that can be a lot bigger than the dish: this ashtray is a good place for your used napkins and toothpicks, too. Lots of tapas come inserted in toothpics, think of it as a throwaway fork.
10 out of 11 (miss the Polish one). Go, Anthro degree.
Most of the answers were kinda silly, though. Seriously, would a German really give a crap if you cut your potatoes with a knife?
Me too, and I’ve visited or lived in all of the countries listed. Except Scotland.