• Views : 80k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #1 - Chemistry Lab Riddle

Difficulty Popularity

Dalton was working in his chemistry lab and created a mixture whose weight is contributed by 90% water and 10% Carbon. The weight of the mixture is 20pounds. As he just finished creating the mixture, Dalton needs to go urgently for some urgent work for 2days. When he returned, the weight of water in the mixture was reduced from 90% to 50%.

How much does the mixture weigh now?

• Views : 60k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #2 - Science - Physics Brain Teaser

Difficulty Popularity

We have two identical balls in terms of diameter and weight. However, one of them is solid and the other is hollow.

Without knocking the ball, can you find the solid ball?

• Views : 30k+
• Sol Viewed : 10k+

# Science Riddles And Puzzles #3 - Science Ology Riddle

Difficulty Popularity

Astrology starts with the alphabet A.
Biology starts with the alphabet B.
Limnology starts with the alphabet L.

Can you find an 'ology' that begins with a P?

• Views : 90k+
• Sol Viewed : 30k+

# Science Riddles And Puzzles #4 - Name Riddle

Difficulty Popularity

I am a son of a chemist and a mathematician.
People called me Iron59.

What's my name?

• Views : 50k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #5 - The Famous Coffee Science Riddle

Difficulty Popularity

You are served a hot cup of coffee and room-temperature cream at a restaurant. You want to wait a few minutes before you drink the coffee, and you want it to be as hot as possible when you drink it. Should you pour the cream in the coffee:

a) Immediately
b) Just before you drink it
c) It doesn't matter

• Views : 50k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #6 - The Classic Barrel Riddle

Difficulty Popularity

This is a classic barrel riddle.
You know the barrel is approximately half filled with oil but you are not sure how fill is the barrel is.

How can you check if its
1. Exactly Half filled
2. > Half Filled
3. < Half Filled.

• Views : 70k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #7 - What is It Science Riddle

Difficulty Popularity

It is the son of the water but when the son returns to parent, it dies.
What is it?

• Views : 50k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #8 - Water Level Change Problem

Difficulty Popularity

A farmer wanted to sell watermelons in the city. To reach the city, he had to cross a river. So, he embarked on the journey while it was raining. On the way, he felt hungry and thus ate one of the watermelons. Further on a certain distance, he came across a Shark. In order to save himself, he hit the shark with the watermelon.

At this point of time, can you find out if there is any change in the water level?

• Views : 80k+
• Sol Viewed : 20k+

# Science Riddles And Puzzles #9 - Spatial Trivia Physics Puzzle

Difficulty Popularity

As shown in picture, there are four gears with the following specification
* Gear A has 60 teeth
* Gear B has 40 teeth
* Gear C has 20 teeth
* Gear D has 60 teeth
* Every minute, Gear B makes 15 complete turns.

What is the relative speed of Gear A and Gear B?

• Views : 20k+
• Sol Viewed : 10k+

# Science Riddles And Puzzles #10 - Faq Geography Riddle

Difficulty Popularity

I am somewhere, where if i stand up straight, i might be considered sideways ?

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