What has to be broken before you can use it?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Can you find the thief by just looking at the picture below?

A man dies of old age on his 25 birthday. How is this possible?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Find the value of "?" in the ball picture Riddle below: