What country can make you shiver?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

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

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

If it took eight men ten hours to build a wall, how long would it take four men to build it?