What is black when you buy it, red when you use it, and gray when you throw it away?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What number should come in place of the question mark below?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.