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?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

81 x 9 = 801. What must you do to make the this equation true?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What is the centre of gravity?

What kind of storm is always in a rush?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?