A man dies of old age on his 25 birthday. How is this possible?

what does this picture(rebus) riddle means ?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

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.

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?