What is at the end of a rainbow?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

What can you catch but never throw?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

What do you answer even though it never asks you questions?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What has 88 keys?

What goes up but never comes down?

It is always ahead of me yet I can never see it. What is it?