What word does this rebus represent?

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I am white when I am dirty, and black when I am clean. What am I?

What do you call a fish without an eye?

I know a nine-letter word having only one vowel.
Do you ?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

What is so fragile that saying its name breaks it?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

What is the centre of gravity?