Solution:

He was walking

Solution:

2 cakes

At each toll bridge you are required to give half of your cakes, and you receive one back. Which leaves you with 2 cakes after every bridge.

Solution:

All other shapes are quadrilaterals, while a hexagon has six sides.

Solution:

The cow that stands out is marked. Check the black spots.

Solution:

Potato
Pot + at + to(toe)

Solution:

4th.

Solution:

6.25

Explanation:
2 1/2 x 2 1/2
= 5/2 x 5/2
= 25/4
= 6.25

Solution:

The Numbers IX and XI have switched the places in the watch.

Solution:

C

Explanation:
It Seems, the water level might be even in all the glasses, but what will happened if we remove the objects from the glasses. When you put an object in water, it will displace the water with the mass of the object Hence, the glass that contains the object with the least amount of weight will have the most water in it.

Even though we might not know the exact weight of all those four objects, we can all agree, that the paper clip weighs the least and hence will displace the minimum water.

Solution:

A picture of Chimpanzee.