Chemistry Concepts Quiz: Trivia!
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The major portion of natural gas is:
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Ethane
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Propane
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Butane
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Methane
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- 2.
Carbon is likely to bond to other inorganic elements through
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Ionic bonds
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Metallic bonds
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Covalent bonds
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None of these
Correct Answer
A. Covalent bondsExplanation
Inorganic compounds are typically formed through covalent bonds. Covalent bonds involve the sharing of electrons between atoms, which allows for the formation of stable compounds. In contrast, ionic bonds involve the transfer of electrons between atoms, and metallic bonds involve the delocalization of electrons in a metal lattice. Since carbon is a nonmetal, it is more likely to form covalent bonds with other elements in inorganic compounds. Therefore, the correct answer is covalent bonds.Rate this question:
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- 3.
Which of the following is an aromatic compound?
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Propanol
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Cyclohexane
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Acetone
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Benzene
Correct Answer
A. BenzeneExplanation
Benzene is an aromatic compound because it contains a ring of six carbon atoms with alternating single and double bonds. This structure gives benzene its characteristic stability and resonance, making it highly reactive and aromatic in nature. Propanol, cyclohexane, and acetone are not aromatic compounds as they do not possess a conjugated ring system like benzene.Rate this question:
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- 4.
There are a few homologous series of compounds. The existence of homologous series is due to:
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Functional groups
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Cracking
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Isomerism
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Polymerization
Correct Answer
A. Functional groupsExplanation
The existence of homologous series is due to the presence of a functional group. Homologous series refers to a group of compounds that have similar chemical properties and a gradual increase in the number of carbon atoms in their structure. The functional group is responsible for determining the chemical behavior and properties of the compounds within the series. It provides a common characteristic that allows for the classification and comparison of these compounds. Cracking, isomerism, and polymerization are not directly related to the existence of homologous series.Rate this question:
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- 5.
Which of the following compounds is heterocyclic?
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Pyridine
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Pyrrole
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Thiophene
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All of above
Correct Answer
A. All of aboveExplanation
Pyridine is a heterocyclic compound because it contains a ring structure with at least one heteroatom, in this case, a nitrogen atom. Heterocyclic compounds are organic compounds that have rings containing atoms other than carbon, such as nitrogen, oxygen, or sulfur. Pyrrole and thiophene are also heterocyclic compounds because they contain nitrogen and sulfur atoms, respectively, in their ring structures. Therefore, the correct answer is All of above .Rate this question:
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- 6.
Select from the following one, which is an alcohol:
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CH3CH2OH
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CH3OCH3
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CH3COOH
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CH3CH2Br
Correct Answer
A. CH3CH2OHExplanation
The correct answer is CH3CH2OH. This compound is known as ethanol, which is a type of alcohol. It is formed by the combination of two carbon atoms, six hydrogen atoms, and one oxygen atom. Ethanol is commonly found in alcoholic beverages and is used as a solvent, fuel, and in the production of various chemicals.Rate this question:
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- 7.
Lassaigne’s solution is prepared for the detection of nitrogen, sulfur, and halogens in organic compounds. Which metal is used for the reaction with the organic compound?
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Aluminium
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Sodium
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Iron
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Copper
Correct Answer
A. SodiumExplanation
Lassaigne’s solution is a reagent used for the detection of nitrogen, sulfur, and halogens in organic compounds. In this case, the metal used for the reaction with the organic compound is sodium. Sodium can react with certain organic compounds to form specific products or undergo specific reactions that help in the identification or detection of elements present in the compound.Rate this question:
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- 8.
When AgNO3 is added to Lassaigne’s solution, which color change indicates the presence of r iodine?
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Blue
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Violet
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Green
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Deep yellow
Correct Answer
A. Deep yellowExplanation
When silver nitrate (AgNO3) is added to Lassaigne's solution, which typically contains compounds like sodium, potassium, and sulfur, a deep yellow color can form due to the presence of iodine. This reaction occurs because silver ions (Ag+) react with any halide ions present in the solution, including iodide ions (I-).Rate this question:
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- 9.
How many carbon atoms does the simplest molecule of a buckyball contain?
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20
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8
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60
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100
Correct Answer
A. 60Explanation
The correct answer is 60 because a buckyball is a spherical fullerene molecule made entirely of carbon atoms. It consists of 60 carbon atoms arranged in a pattern of hexagons and pentagons, similar to a soccer ball. Therefore, the simplest molecule of buckyball contains 60 carbon atoms.Rate this question:
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- 10.
If a molecule contains more than one functional group it is known as:
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Derivatives
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Polyfunctional
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Heterocyclic
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None
Correct Answer
A. PolyfunctionalExplanation
A molecule that contains more than one functional group is known as polyfunctional. This means that the molecule has multiple reactive sites, allowing it to undergo various chemical reactions and participate in multiple types of interactions. This term is used to describe compounds that have multiple functional groups, such as alcohols, amines, carboxylic acids, and others. These functional groups can greatly influence the properties and reactivity of the molecule, making it versatile in different chemical processes.Rate this question:
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Mar 22, 2024Quiz Edited by
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Expert Reviewed by
Zohra Sattar Waxali -
Mar 10, 2021Quiz Created by
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