Why do people go to bed?

What part of Turkey has the most feathers?

When it's bad luck to meet a black cat?

Do you know who was buried in John's tomb?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?