I look at you, you look at me, I raise my right, you raise your left. What am I?

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 is at the end of a rainbow?

I have teeth but i don't bite. Who Am I ?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

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

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

You can see it everyday, But cannot touch it at will. What is it?