-1. Which king was overthrown as a result of the French Revolution? 
-2. What’s the only mammal that’s able to fly?
-3. The German port of Hamburg lies near the mouth of which major European river?
-4. Which country invented Gazpacho?
-5. Picasso went through two periods named after colours. Name them
6. The "Pour le Merite", Germanys highest military medal in World War I, was better known as what ?
-7. The name of which Swiss hotel owner from the late 19th century later became a synonym for good taste and elegance ?
8. The Potala Palace was the former residence of which religious figure?
-9. In which TV series was the cone of silence used with varying degrees of success?
-10. Which enzyme found in the body breaks down starch and glycogen into simple sugars as part of the process of digestion?
-11. What was the first music video to ever air on MTV (prophetic, in retrospect)?
12. Who is this?

4. Spain (I think)

2. bats

1. King Louis XVI

A big thumbsup to all three!

9. Get Smart

Ah - those were the days!

10. amylase

Good one, michele!

5. Blue and Rose ??

Blue is right and rose isn't a million miles away - try again, Mad?

Rog, I was not sure of the answer to this so I looked it up - and several sources did describe these two periods as blue and rose. Others mentioned blue and something else that isn't a million miles away from rose, as you stated.

3. The Elbe

The only two I've ever known were Blue and Rose. And my futile, cheating searches have found nothing else !!

So, as a complete guess then, I'll offer "Pink"

7. Ritz

11. Based on your clue I am guessing Video Killed The Radio Star?

12. Gene Simmons?

Spot-on, manxman and Lady K, and well-worked out flotsam!

My apologies, Mad - I hadn't heard of his rose period. ! Googled something like "what colour periods is Picasso associated with and took "blue and pink" as Gospel

Marian - thanks for the heads-up on that!

Koala - a rare "I'm afraid not" Will zoom out in a couple of days...