What is more useful when it is broken?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

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

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?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

What is black when you buy it, red when you use it, and gray when you throw it away?

Next Number in the Series,

5, 16, 49, 104, ?