I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Can you make a six-letter word using the letters N, A and B ?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

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