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Chemistry Lesson(1) Trivia Quiz

Welcome to my lesson!

A multiple-choice quiz by runeslaye123. Estimated time: 5 mins.

Author
runeslaye123

Time
5 mins

Type
Multiple Choice

Quiz #
240,542

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
5 / 10

Plays
3462

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is the general formula for alkanes? Hint

CnH2n

CnH2n+1OH

CnH2n+2

CnHn+2

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Question 2 of 10

2. What is another word for formic acid? Hint

Propionic acid

Acetic acid

Methanoic acid

Ethanoic acid

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Question 3 of 10

3. An ester is formed when carboxylic acid reacts with alcohol. What are some of the uses of esters? Hint

artificial flavorings and fragrances

detergents

used in disinfectant aerosol sprays

used in lubrication

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Question 4 of 10

4. An alkene is formed from the cracking of petroleum. How do we differentiate between alkanes and alkenes? Hint

Hydration

Halogenation with decolorization

Hydrogenation

Dehydration

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Question 5 of 10

5. Nylon is used in many things in our lives today. Examples are umbrellas, raincoats, fishing line, ropes and tents. Which of the following has the same linkage as nylon? Hint

Fats

Vitamins

Carbohydrates

Proteins

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Question 6 of 10

6. What is produced in the incomplete combustion of alkenes? Hint

carbon monoxide and alcohol

oxygen and water

carbon monoxide and water

carbon dioxide and water

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Question 7 of 10

7. Carboxylic acid... Hint

forms a salt and hydrogen with a metal oxide

gives off steam when reacted with magnesium

forms a salt, water and carbon dioxide when reacted with carbonate

is a poor electrolyte

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Question 8 of 10

8. Industrially, ethanol can be produced by the reaction of steam with ethene. This reaction is catalysed by what? Hint

finely divided iron

phosphoric(V) acid

vanadium(V) oxide

heated zinc

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Question 9 of 10

9. What is the purpose of the condensor in the process of ethanol oxidising to ethanoic acid? Hint

prevent the reforming of ethanol from the ethanoic acid

prevent the conversion of the ethanol to ethene

prevent the escape of any unchanged ethanol

prevent the reaction of the ethanoic acid with the ethanol

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Question 10 of 10

10. Which reaction does not produce carbon dioxide? Hint

Combustion of methane

Fermentation of sugar

Oxidation of ethanol to ethanoic acid

Reaction of ethanoic acid with calcium carbonate

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Quiz Answer Key and Fun Facts

1. What is the general formula for alkanes?

Answer: CnH2n+2

CnH2n is the general formula for alkenes. CnH2n+1OH is the general formula for alcohol.

2. What is another word for formic acid?

Answer: Methanoic acid

Formic acid is used as a preservative and antibacterial agent in livestock feed.

3. An ester is formed when carboxylic acid reacts with alcohol. What are some of the uses of esters?

Answer: artificial flavorings and fragrances

Examples of esters are pentyl pentanoate, ethyl acetate etc. The first word is from the alcohol while the second is from the acid group.

4. An alkene is formed from the cracking of petroleum. How do we differentiate between alkanes and alkenes?

Answer: Halogenation with decolorization

A halogen like bromine is added to the substance. An alkene will decolourise bromine from brown to colourless. There will be no visible change with an alkane.

5. Nylon is used in many things in our lives today. Examples are umbrellas, raincoats, fishing line, ropes and tents. Which of the following has the same linkage as nylon?

Answer: Proteins

They have the amide or peptide linkage. Fats and terylene both have the ester linkage.

6. What is produced in the incomplete combustion of alkenes?

Answer: carbon monoxide and water

If it is a complete combustion, CO2 and H2O are formed.

7. Carboxylic acid...

Answer: forms a salt, water and carbon dioxide when reacted with carbonate

Any acid also has this propertiy. For example : Hydrochloric acid + sodium carbonate to give sodium chloride + water + carbon dioxide.

8. Industrially, ethanol can be produced by the reaction of steam with ethene. This reaction is catalysed by what?

Answer: phosphoric(V) acid

Vanadium(V) oxide is used in the manufacture of sulfuric acid.

9. What is the purpose of the condensor in the process of ethanol oxidising to ethanoic acid?

Answer: prevent the escape of any unchanged ethanol

The condensor changes the gas to liquid. Liquids are unable to escape but gas could escape very easily.

10. Which reaction does not produce carbon dioxide?

Answer: Oxidation of ethanol to ethanoic acid

Ethanoic acid is known as vinegar. Beer would turn sour if you left it open for too long because it has been oxidised to acid. Acid gives a sour taste.

Source: Author runeslaye123

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