What is both possible and impossible at the same time?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

If eleven plus two equals one, what does nine plus five equal?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

If your uncle’s sister is not your aunt, what relation is she to you?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?