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?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Move four matchsticks to the below square to form three squares?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

When it is alive we sing, when it is dead we clap our hands. What is it?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

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

Which five letter word can be added at the end of below word to form a
valid word?

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How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What does below chemistry rebus means?