I know this book can be more enjoyable to read if I have a wider knowledge and much more interest in science. Actually, the book was great. It has the detailed explanation for each question and as a reader, I was amazed at how imaginative most of the people out there. Most of the answers usually have some witty drawings which made it more fun to read and the drawings made it easier to understand if you struggle with the long explanation. I felt bad that I have limited knowledge and interest in scientific stuff else I will love this book more and I definitely rate it 5/5. The problem is me, not the book. If you really really really love science and your mind is always full of scientific hypothetical questions, you will love this book.
More reviews can be found on Goodreads: What If?: Serious Scientific Answers to Absurd Hypothetical Questions.