How do I know which ones are correct IUPAC names?

Question

Which of these are correct IUPAC names:

3-isopropyloctane
3-ethyl-2-methyl-3-propylpenta...
3-ethyl-2-methyloctane
2,2-dimethyl-4-pentanol
N-ethyl-2-pentanamine
methyl ethyl ether
2-isopropoxybutane
2-sec-butoxyisopropane
4-hexylcyclobutane
3,3,4-trichloro-2-hexanol

Answer 1

anything with iso, sec, or tert is not. methyl ethyl ether is not (IUPAC would be methoxyethane). 4-hexylcyclobutane is not b/c the number is wrong (should be 1-hexyl). that leaves the 2nd, 3rd, 4th, 5th?(im not sure about amine naming, sorry), and 10th

Answer 2

1) Correct
2) Can't tell, Yahoo cut it off too short, but it looks good
3) Correct
4) Correct
5) No. That is another system
6) No. That is a "derived name"
7) Correct
8) No. A jumble
9) No. Wrong numbering
10) Correct
9) Correct

Answer 3

Try drawing out the structures as written and then rename them correctly based on the structure you have drawn. You will be able to choose which were named correctly because it will match your name.