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Quiz about Scientific Knowledge For the Chemist

Scientific Knowledge: For the Chemist Quiz

Hello everyone and welcome to the scientific quiz for the chemists on Funtrivia. I hope you will enjoy this quiz because Everything is Chemistry). Please don't forget to rate it.

A multiple-choice quiz by johnnyvin. Estimated time: 4 mins.

Author
johnnyvin

Time
4 mins

Type
Multiple Choice

Quiz #
198,396

Updated
Dec 03 21

# Qns
10

Difficulty
Average

Avg Score
7 / 10

Plays
2259

One at a Time - Single Page - Timed Game

Question 1 of 10

1. As we all are aware, lasers have become a part of our lives. From surgeries to supermarkets, they are everywhere. In the most common laserbeam, which two gases are combined to form the laser? Hint

neon and argon

xenon and hydrogen

krypton and xenon

helium and neon

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Question 2 of 10

2. I have a packet of French fries. My friend says that if I put a little acetic acid in the fries, they will taste better. I am astounded. I ask him if my tongue will burn. Then my friend laughs and tells me acetic acid is the chemical name for... Hint

salt

spice

sauce

vinegar

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Question 3 of 10

3. I first took a beaker and poured concentrated sulfuric acid in it. Then, to dilute the acid, I poured water in the beaker.What happened next? Hint

The beaker exploded.

There was some effervescence(fizz).

Nothing except the acid was diluted.

The acid and water didn't mix at all.

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Question 4 of 10

4. My friend and I took some hydrochloric acid and sodium hydroxide and mixed it in controlled conditions. What should we get as a product? Hint

salt only

sodium hydrochlorate

water only

salt and water

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Question 5 of 10

5. Anode rays and protons were discovered by which chemist? Hint

J J Thomson

E. Rutherford

E. Goldstein

J Chadwick

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Question 6 of 10

6. What are atoms of an element with the same number of protons but different number of neutrons in the nucleus known as? Hint

isotopes

isobars

ions

cations

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Question 7 of 10

7. Dihydrogen monoxide is the chemical name for what necessity? Hint

stain remover

water

baking soda

bleach

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Question 8 of 10

8. I have little stickers that glow in the dark after the light goes off. How do they do that? Hint

by proton energy through a phosphorescent material

by phonon energy through a phosphorescent material

by neutron energy through a phosphorescent material

by photon energy through a phosphorescent material

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Question 9 of 10

9. Why do modern airships such as blimps use helium rather than hydrogen gas? Hint

hydrogen is more expensive

helium gas is lighter

hydrogen gas is highly flammable

hydrogen molecules are so small that they slowly but steadily escape

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Question 10 of 10

10. Which of the following is not an element? Hint

Gallium

Californium

Einsteinium

Buckminsterfullerium

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Quiz Answer Key and Fun Facts

1. As we all are aware, lasers have become a part of our lives. From surgeries to supermarkets, they are everywhere. In the most common laserbeam, which two gases are combined to form the laser?

Answer: helium and neon

The common red of the supermarket scanner is the combination of helium and neon.

Answer: vinegar

Vinegar is also called ethanoic acid in addition to acetic acid. Incidentally the chemical formula is CH3COOH.

3. I first took a beaker and poured concentrated sulfuric acid in it. Then, to dilute the acid, I poured water in the beaker.What happened next?

Answer: The beaker exploded.

Always pour acid into the water. NEVER pour water into the acid. Due to the entrance of foreign molecules in the highly concentrated acid, it causes a reaction which in turn results in an explosion.

4. My friend and I took some hydrochloric acid and sodium hydroxide and mixed it in controlled conditions. What should we get as a product?

Answer: salt and water

HCl is an acid and NaOH is an alkali and the property of acids and alkalis is :

ACID+ALKALI- SALT+WATER.

Therefore I should have a salt and water solution. This process is also called neutralisation.

5. Anode rays and protons were discovered by which chemist?

Answer: E. Goldstein

E. Goldstein (1900) discovered protons in anode ray experiments. According to Goldstein, atoms contain positively-charged particles called protons. Since atoms contain negatively-charged particles, they must contain positively-charged particles for them to be electrically neutral.

6. What are atoms of an element with the same number of protons but different number of neutrons in the nucleus known as?

Answer: isotopes

They are different from normal atoms in mass, unlike ions which are different in reactivity (electron number differs in ions).

7. Dihydrogen monoxide is the chemical name for what necessity?

Answer: water

This was a bit of a trick question. "Dihydrogen" refers to two hydrogen atoms while "monoxide" refers to mono-oxygen or just one oxygen atom. Put them together and you have H2O- the unique necessity-water.

Sodium Hypochlorite is bleach while sodium bicarbonate is an antacid as well as baking soda.

8. I have little stickers that glow in the dark after the light goes off. How do they do that?

Answer: by photon energy through a phosphorescent material

Glowing is due to the fluorescence and phosphorescence (photonic energy) of the phosphorescent material.

9. Why do modern airships such as blimps use helium rather than hydrogen gas?

Answer: hydrogen gas is highly flammable

People once used hydrogen gas to lift zeppelins and other airships into the sky, allowing trans-Atlantic voyages by air. However, because the gas is so flammable, it contributed to many explosive accidents, including the Hindenburg explosion in 1937. Airships now use helium gas because it is nonflammable and therefore a safer lifting gas.

source: World Book 2003 - H

10. Which of the following is not an element?

Answer: Buckminsterfullerium

Buckminsterfullerium is not an element. Note, however, that buckminsterfullerene, named for scientist Buckminster Fuller, is a natural physical form of the element carbon. Einsteinium, Berkelium, and Californium are all artificially created radioactive elements discovered in the late 1940s and early 1950s.

Source: Author johnnyvin

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