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

Which tank will fill first?

The more it dries, the wetter it becomes. Can you tell what it is?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Find the next number in the following series:
6, 14, 26, 98, __?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

I have an eye but still cannot see.

Who am I?