Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

Which point will the car reach to go out?

Which part of London exists in France as well ?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

My location can be determined by the below rebus.
So where am i ?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?