Eight of us go fourth, not back, to protect our king from an attack. What are we?

I travel all around the world but always stay in the corner. What am I?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

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

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

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