Quizzes & Puzzles 52

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11 months ago

I have been asked to make some questions somewhat easier and I will try to accommodate that wish. It doesn't mean that the difficult questions will disappear, just that all of them will not be like that. The obvious problem then is to know what's very difficult and not, since, to some extent, that differs from person to person. However, I will try, even if I will not make anything too simple - after all, these quizzes should be a challenge. If you feel I'm not doing it well, feel free to let me know in the comment section.

Here are some new problems with which to exercise the brain. But first a look at answers and solutions to Quizzes & Puzzles 51. New problems below the image (cartoon).

Answer to Quiz 51:1

Which of the following substances are not B-vitamins?

  • Pantothenic acid

  • Nicotinic acid

  • Ascorbic acid

  • Pyridoxine

  • Cholecalciferol

  • Orotic acid

  • Melatonin

  • Riboflavin

  • Pangamic acid

  • Salicylic acid

  • Thiamin

  • Methionine

Ascorbic acid, Cholecalciferol, Melatonin, Salicylic acid and Methionine are not B-vitamins.

Ascorbic acid is vitamin C: cholecalciferol is a form of vitamin D; melatonin is an hormone, produced in thee pineal gland; salicylic acid is aspirin; and methionine is an amino acid.

@Aimure knew four of these.

If you want to read more about these substances, see:

For B-vitamins:

B-Vitamins I: Introduction

B-Vitamins II: Thiamine, Riboflavin, Niacin, Pyridoxine, Cyanocobalamin

B-Vitamins III: Folic Acid, Biotin, Pantothenic Acid, Choline, Inositol

B-Vitamins IV: Amygdalin (B17), Pangamic Acid (B15), Orotic Acid (B13), PABA (B10), plus Guidelines

For Ascorbic acid:

Vitamin C (part 1): Can Science be Trusted?

Vitamin C (part 2): How to Use & What it Does

For Cholecalciferol: Vitamin D – Underrated Vitamin?

For Melatonin: The Pineal Gland - The Third Eye

For Salicylic acid: Salicylic Acid: Is Aspirin a Vitamin?

For Methionine: Amino Acids: Nutrients & Supplements part I

Answer to Quiz 51:2

Cleopatra is a famous Egyptian ruler from history. However, she (the one we normally call just Cleopatra) was not the only one in her family (the Ptolemaic family) with that name, and she was definitely not the first. So, if we would be strict, we would also add a number to her name - which number?

She was Cleopatra VII Philopator, so the number was VII (7). You can read more about Cleopatra, her life, her conspiracies, and her possibly dramatic death in my article Cleopatra - The Serpent of the Nile?

Answer to Quiz 51:3

What is the highest number on a normal roulette wheel?

It is 36. That is 6 times 6, which indicates influence from dice.

Answer to Quiz 51:4

Who is the only person who has received two unshared Nobel Prizes?

Linus Pauling. In 1954, he received the Nobel Prize in Chemistry - and in 1962, he was awarded the Nobel Peace Prize.

Answer to Quiz 51:5

From which mineral was genuine ultramarine made? It was one of the most expensive pigments in the world (although nowadays it is made synthetically).

It was made from lapis lazuli (lazurite). Read more in Genuine Ultramarine, Once One of the Most Costly Pigments in the World.

Answer to Quiz 51:6

Which Italian Renaissance prince was called “Il Magnifico”, and over which city state did he rule?

It was Lorenzo di Medici (1449-1492), and he was the ruler of Florence. He was also a banker and a great patron of the arts. Michelangelo, da Vinci and Boticelli are examples of artists who worked in Florence in Lorenzo's days.

Answer to Quiz 51:7

The first animal to circle earth in a spacecraft was a dog; what was its name?

It was Laika. In 1957 she was sent up by the Soviet Union, in Sputnik II – and she died in space. In fact, there were no preparations for taking her down alive.

And now some new exercises for brain & memory...

Quiz 52:1

If you have many disulphide bonds in your hair, what is the visible result?

Quiz 52:2

What have these countries in common – give me a common denominator?

  • Belgium

  • Japan

  • United Kingdom

  • Tonga

  • Denmark

Quiz 52:3

What is the commutative law of addition?

Quiz 52:4

Which colour is said to precede black, as life precedes death, so much that this specific colour was sometimes seen as an omen of death?

Quiz 52:5

In Star Wars, who is the father of Luke Skywalker?

Quiz 52:6

Why should you not take high dose antioxidants while you are undergoing radiation therapy for cancer?

Quiz 52:7

Five European countries have been world champions in football (soccer), while ten countries have been European champions. Which six countries have been European champions, but never world champions?

Quiz 52:8

July is named after Julius Caesar, August after emperor Augustus, but why is it not continuing? Why is September not named after the next Roman emperor in line, Tiberius?

You'll find answers and solutions in the next “Quizzes & Puzzles”.

Quizzes & Puzzles has its own label in my Index, where all issues of the series can be found.

In my INDEX, you can find all my writings on Read.Cash, sorted by topic.

Copyright © 2022 Meleonymica/Mictorrani. All Rights Reserved

(Cartoon by Christian Dorn/Pixabay, CC0/Public Domain.

Roulette image by PIRO4D/Pixabay, CC0/Public Domain.)

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11 months ago


I love your content, these facts are soo interesting. I especially like about roulette wheel.

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11 months ago

You are welcome to enjoy my content - and welcome to Read.cash as well, I just saw that you are new here.

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11 months ago

I learned a lot from this answers. I had to go and read more about Linus Pauling. That man was really awesome.

As regards the questions, I don't really have an answer to them.

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11 months ago

No doubt, Linus Pauling was one of the greatest scientists ever.

I like to hear that you learn from my answers, that's one of the purposes with this series.

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11 months ago

52:1 Disulphide bonds are responsible for hair types. The more bonds, the curlier the hair, the stronger the hair and the more less prone the hair is to breakage and damage.

52:2 They are all common wealth nations

52:3 a+b=b+a

52:4 Purple

52:6 High dose of antioxidants can counteract the effect of chemotherapy.

That's all I know. I'm not sure of 52:4 though

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11 months ago

"Curls" is the right answer, that's the visible result.

"Commonwealth nations" - no, that's wrong,only two of them are so.

a+b=b+a; that's the commutative law of addition, yes it's right.

Purple is wrong.

About 52.6.... well what you say is right, but the question was about radiation therapy, not chemotherapy. Yet the same apply. Do you know why antioxidants counteract the therapy?

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11 months ago

The aim of radiation therapy is to kill cancer cells but antioxidants protects those cancer cells thus rendering the therapy ineffective

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11 months ago

Yes. The ooint is that radiation causes strong oxidation, by which which the cancer cells are supposed to be killed. The antioxidants block this whole mechanism.

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11 months ago