What is both possible and impossible at the same time?

How can you tell a raw egg from a hard-boiled egg?

I can be cracked, made, told, and played. What am I?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

What Time Should the last watch show in the below figure?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

How many triangles can you find in this given picture?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

What does below chemistry rebus means?