Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Which point will the car reach to go out?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Why do we preferably have round manhole covers and not square ones?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Which word does the below Plexor means ?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?