What does the below rebus riddle means?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Who can jump higher than a Mountain?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Bay of Bengal is in which state?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What brings you down but never up?

What does the below rebus puzzle mean?

The cream is heavier than Milk. True or False?