What runs around the whole yard without moving?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Name a key which is hardest to turn.

What does an Island and the letter T have in common?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

You can see three almost identical images below. Can you spot the odd one out from them?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

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

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?