Which is faster, Heat or Cold ? Explain.

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Identify the hidden meaning behind this picture?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

I know a nine-letter word having only one vowel.
Do you ?

What does this mean?

CCCCCCC

what one word does the below rebus identifies?

What is the centre of gravity?

The centre of the third figure is empty. What digit should fit inside?