Why do we get dew on the surface of a cold soft drinking bottle kept in open air?

We see small drops of water on the bottle of a cold soft drink water kept in air because the air surrounding the bottle, when comes in contact with the cool surface of water condenses to form water, and this water is seen as drops on the bottle.

There is a different in temps from the bottle to the air. Its condensation . The more colder the water or drink is the more condensation on the bottle of a hot day . COLD WATER+HOT WATER = More condensation.  

No, he won't be drowned.

Explanation:

We have given,

The height of the student = 5 feet,

Depth of the pool( in feet ) = x ( say ) < 5 feet,

Since, the depth of the pool < height of the student,

Thus, if the student went for swimming in a pool, however he does not know swimming, he will not be drowned until he is suffering from an injury or external force.