Best medium riddles for teens

What word in the English language does the following: the first two letters signify a male, the first three letters signify a female, the first four letters signify a great man, the first six letters signify a drug, while the entire world signifies a great woman. What is the word?

Before Mt. Everest was discovered, what was the highest mountain in the world?

You bury me when I am alive, and dig me up when I die. What am I?

When it comes to me, you go on red and stops on green. What am I?

What has many keys but can't open any doors?

What has a tongue, cannot walk, but gets around a lot?

You are in a room with 3 monkeys. One monkey has a banana, one has a stick, and one has nothing. Who is the smartest primate?

There is an ancient invention still used in some parts of the world today that allows people to see through walls. What is it?

Take away my first letter, and I still sound the same. Take away my last letter, I still sound the same. Even take away my letter in the middle, I will still sound the same. I am a five letter word. What am I?

In the final stretch of a road race, you pass the 2nd-place runner right before crossing the finish line. What place do you finish in?