I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

During which month do people sleep the least?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

People make me, save me, change me, raise me. What am I?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

What is the centre of gravity?