Is the semicolon used correctly in the sentence below?

1. George Orwell's essay "Shooting an Elephant" is about a rampaging elephant; and Orwell's decision to shoot this elephant.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.

2. George Orwell's essay "Shooting an Elephant" is about a rampaging elephant; Orwell relunctantly decides to shoot this elephant.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.

3. A draft of my first essay is due on Monday; I also need to read the second chapter of the textbook.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.

4. A draft of my first essay is due on Monday; and I also need to read the second chapter of the textbook.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.

5. I enjoyed spending a week in Florida; however, it was nice to return home after the long vacation.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.

6. The sunny days in Florida; however, gave me a bad sunburn.

   1.   ?    The semicolon is correct.
   2.   ?    The semicolon is incorrect.