What country can make you shiver?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Which is the correct shadow of the bird?

What occurs twice in a week, once in a year but never in a day?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

The cream is heavier than Milk. True or False?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?