Organic Chemistry Practice Questions! Trivia Test
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Which of the following functional groups contain a carboxyl group?
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Esters
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Ethers
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Carboxylic acids
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Aldehydes
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Explore the fundamentals of organic chemistry with this engaging trivia test! Assess your skills in identifying organic compounds, understanding functional groups, and recognizing reaction types. Perfect for learners aiming to enhance their chemistry knowledge.
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- 2.
Which of the following is a saturated hydrocarbon?
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Structure:
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Structure:
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Structure:
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Structure:
Correct Answer
A. Structure: -
- 3.
Which of the following structures is a ketone?
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Structure:
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Structure:
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Structure:
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Structure
Correct Answer
A. Structure: -
- 4.
-dienes are the name given to compounds with
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Exactly one double bond
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Exactly one triple bond
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Exactly two double bond
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More than two double bonds
Correct Answer
A. Exactly two double bondExplanation
The correct answer is "exactly two double bonds." The name "dienes" refers to compounds that have exactly two double bonds. This means that there are two carbon-carbon double bonds present in the molecule. It is important to note that if there is only one double bond, the compound would be called a "ene" rather than a "diene." Similarly, if there are more than two double bonds, the compound would have a different name.Rate this question:
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- 5.
Name the organic compound below
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3,4-diethyl-2-hexene
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3,4-ethylhexene
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3,4-diethylhexene
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3,4-diethyl-4-hexene
Correct Answer
A. 3,4-diethyl-2-hexeneExplanation
The correct answer is 3,4-diethyl-2-hexene because the compound has two ethyl groups (diethyl) attached to the 3rd and 4th carbon atoms of a hexene chain, and the double bond is located between the 2nd and 3rd carbon atoms (2-hexene).Rate this question:
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- 6.
Organic compounds in which two hydrocarbon groups are bonded to the same atom of oxygen.
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Ether
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Alcohol
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Ester
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Aldehyde
Correct Answer
A. EtherExplanation
Ether is the correct answer because it is an organic compound in which two hydrocarbon groups are bonded to the same atom of oxygen. Ethers have the general formula R-O-R', where R and R' represent hydrocarbon groups. They are commonly used as solvents and anesthetics due to their low reactivity and volatility.Rate this question:
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- 7.
An alkyne with 6 carbons will have how many hydrogen atoms?
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10
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12
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14
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13
Correct Answer
A. 10Explanation
An alkyne with 6 carbons will have 2 hydrogen atoms bonded to each carbon atom, except for the two end carbon atoms which will have 1 hydrogen atom bonded to each. Therefore, the total number of hydrogen atoms in the alkyne will be 2(6) + 1 + 1 = 13.Rate this question:
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- 8.
Which of the following shows a condensation reaction?
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Reaction:
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Reaction:
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Reaction:
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Reaction:
Correct Answer
A. Reaction: -
- 9.
What is the name of the organic compound below
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3,3-dipropyloctane
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3,5-dipropylhexane
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3-propyl-5-methyloctane
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4-ethyl-6-methylnonane
Correct Answer
A. 4-ethyl-6-methylnonaneExplanation
The compound is named as "4-ethyl-6-methylnonane". It describes a nonane molecule, because the longest chain is 9 carbons long, with an ethyl group attached to the fourth carbon atom and a methyl group attached to the sixth carbon atom along the main carbon chain.Rate this question:
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- 10.
What happens to boiling point and melting point of an organic compound when it exhibits chain branching?
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Boiling point increases while melting point decreases
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boiling point decreases while melting point increases
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Both boiling point and melting point decreases
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Both boiling point and melting point increases
Correct Answer
A. boiling point decreases while melting point increasesExplanation
Boiling Point: Chain branching in organic compounds generally leads to a decrease in boiling point. This is because branched-chain molecules have a more compact structure and lower surface area compared to their straight-chain counterparts, resulting in weaker intermolecular forces (van der Waals forces) and, consequently, lower boiling points.
Melting Point: The melting point of branched-chain compounds can be higher than that of their straight-chain counterparts. This is because the compact and often more symmetrical structure of branched molecules can pack more efficiently in the solid state, leading to stronger intermolecular interactions in the solid phase and a higher melting point.Rate this question:
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Current Version
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May 25, 2024Quiz Edited by
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Jul 05, 2020Quiz Created by
Brian