What word does this rebus represent?

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What word is represented by this rebus?

Can you solve the photo plexer logic ?

What has 88 keys?

Who has married many women but was never married?

What will you call your mother's brother's brother-in-law?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?