What does below chemistry rebus means?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

What is red and smells like blue paint?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Find out the missing number in the picture attached:

what's the probability of getting a king or a queen from a pack of 52 cards?

What is the next shape from answers A, B, C, and D figure?

What 5-letter word typed in all capital letters can be read the same upside down?