Q. What type of reaction forms a disaccharide from two monosaccharides? (2022)
-
A.
Hydrolysis
-
B.
Condensation
-
C.
Oxidation
-
D.
Reduction
Solution
A condensation reaction occurs when two monosaccharides combine to form a disaccharide, releasing water.
Correct Answer:
B
— Condensation
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Q. What type of reaction forms a peptide bond?
-
A.
Hydrolysis
-
B.
Condensation
-
C.
Oxidation
-
D.
Reduction
Solution
A peptide bond is formed through a condensation reaction, where water is released.
Correct Answer:
B
— Condensation
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Q. What type of reaction forms peptide bonds between amino acids?
-
A.
Hydrolysis
-
B.
Condensation
-
C.
Redox
-
D.
Substitution
Solution
Peptide bonds are formed through a condensation reaction, where a molecule of water is released.
Correct Answer:
B
— Condensation
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Q. What type of reaction forms peptide bonds?
-
A.
Hydrolysis
-
B.
Condensation
-
C.
Oxidation
-
D.
Reduction
Solution
Peptide bonds are formed through a condensation reaction between amino acids.
Correct Answer:
B
— Condensation
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Q. What type of reaction forms polymers from monomers?
-
A.
Hydrolysis
-
B.
Dehydration synthesis
-
C.
Redox reaction
-
D.
Condensation reaction
Solution
Dehydration synthesis is the reaction that links monomers together to form polymers by removing water.
Correct Answer:
B
— Dehydration synthesis
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Q. What type of reaction is involved in the conversion of an alkene to an alkane? (2023)
-
A.
Hydrogenation
-
B.
Dehydration
-
C.
Halogenation
-
D.
Oxidation
Solution
Hydrogenation is the process of adding hydrogen to an alkene to convert it into an alkane.
Correct Answer:
A
— Hydrogenation
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Q. What type of reaction is represented by the equation: CaCO3 → CaO + CO2? (2020)
-
A.
Synthesis
-
B.
Decomposition
-
C.
Single replacement
-
D.
Double replacement
Solution
The reaction CaCO3 → CaO + CO2 is a decomposition reaction, where one compound breaks down into two products.
Correct Answer:
B
— Decomposition
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Q. What type of reaction is the conversion of an alkene to an alkane? (2023)
-
A.
Hydrogenation
-
B.
Dehydration
-
C.
Halogenation
-
D.
Oxidation
Solution
The conversion of an alkene to an alkane is called hydrogenation, where hydrogen is added across the double bond.
Correct Answer:
A
— Hydrogenation
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Q. What type of reaction occurs when 1-bromopropane reacts with potassium cyanide?
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction is a nucleophilic substitution where the cyanide ion replaces the bromine atom.
Correct Answer:
B
— Substitution
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Q. What type of reaction occurs when 1-bromopropane reacts with sodium cyanide? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction between 1-bromopropane and sodium cyanide is a nucleophilic substitution reaction, resulting in the formation of propanenitrile.
Correct Answer:
B
— Substitution
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Q. What type of reaction occurs when 1-bromopropane reacts with sodium ethoxide? (2023)
-
A.
Elimination
-
B.
Nucleophilic substitution
-
C.
Addition
-
D.
Oxidation
Solution
The reaction of 1-bromopropane with sodium ethoxide is a nucleophilic substitution reaction where the ethoxide ion replaces the bromine atom.
Correct Answer:
B
— Nucleophilic substitution
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Q. What type of reaction occurs when 1-chlorobutane is treated with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
When 1-chlorobutane is treated with aqueous KOH, a nucleophilic substitution reaction occurs, resulting in the formation of butanol.
Correct Answer:
B
— Substitution
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Q. What type of reaction occurs when 1-chloropropane is treated with aqueous KOH? (2019)
-
A.
Nucleophilic substitution
-
B.
Elimination
-
C.
Addition
-
D.
Redox
Solution
The reaction of 1-chloropropane with aqueous KOH leads to nucleophilic substitution, resulting in the formation of propanol.
Correct Answer:
A
— Nucleophilic substitution
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Q. What type of reaction occurs when 1-chloropropane reacts with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction of 1-chloropropane with aqueous KOH leads to an elimination reaction, forming propene.
Correct Answer:
B
— Substitution
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Q. What type of reaction occurs when 1-chloropropane reacts with potassium cyanide? (2019)
-
A.
Nucleophilic substitution
-
B.
Electrophilic substitution
-
C.
Addition reaction
-
D.
Elimination reaction
Solution
The reaction between 1-chloropropane and potassium cyanide is a nucleophilic substitution reaction, resulting in the formation of propanenitrile.
Correct Answer:
A
— Nucleophilic substitution
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Q. What type of reaction occurs when 1-chloropropane reacts with sodium cyanide? (2023)
-
A.
Elimination
-
B.
Nucleophilic substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction between 1-chloropropane and sodium cyanide is a nucleophilic substitution reaction where the cyanide ion replaces the chlorine atom.
Correct Answer:
B
— Nucleophilic substitution
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Q. What type of reaction occurs when 1-chloropropane reacts with sodium iodide in acetone? (2023)
-
A.
Elimination
-
B.
Nucleophilic substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction is a nucleophilic substitution (S_N2) where iodide ion replaces the chlorine atom.
Correct Answer:
B
— Nucleophilic substitution
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Q. What type of reaction occurs when 2-bromobutane is treated with sodium ethoxide?
-
A.
Nucleophilic substitution
-
B.
Elimination
-
C.
Addition
-
D.
Redox
Solution
The treatment of 2-bromobutane with sodium ethoxide leads to an elimination reaction, forming an alkene.
Correct Answer:
B
— Elimination
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Q. What type of reaction occurs when 2-bromopropane is treated with aqueous KOH? (2023)
-
A.
Elimination
-
B.
Substitution
-
C.
Addition
-
D.
Redox
Solution
The reaction of 2-bromopropane with aqueous KOH leads to an elimination reaction, forming propene.
Correct Answer:
A
— Elimination
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Q. What type of reaction occurs when alkenes are converted to alkanes?
-
A.
Addition
-
B.
Substitution
-
C.
Elimination
-
D.
Oxidation
Solution
The conversion of alkenes to alkanes involves the addition of hydrogen (hydrogenation).
Correct Answer:
A
— Addition
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Q. What type of reaction occurs when alkenes react with hydrogen?
-
A.
Hydrolysis
-
B.
Hydrogenation
-
C.
Dehydrogenation
-
D.
Oxidation
Solution
The reaction of alkenes with hydrogen is called hydrogenation.
Correct Answer:
B
— Hydrogenation
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Q. What type of reaction occurs when alkenes undergo hydrogenation?
-
A.
Addition
-
B.
Substitution
-
C.
Elimination
-
D.
Oxidation
Solution
Hydrogenation is an addition reaction where hydrogen is added across the double bond.
Correct Answer:
A
— Addition
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Q. What type of reaction occurs when an acid reacts with a base? (2021)
-
A.
Decomposition
-
B.
Synthesis
-
C.
Neutralization
-
D.
Combustion
Solution
An acid reacting with a base results in a neutralization reaction, producing salt and water.
Correct Answer:
C
— Neutralization
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Q. What type of reaction occurs when an alcohol is oxidized? (2023)
-
A.
Reduction
-
B.
Dehydration
-
C.
Substitution
-
D.
Oxidation
Solution
Oxidation of alcohols involves the loss of hydrogen or the gain of oxygen, leading to the formation of aldehydes, ketones, or carboxylic acids.
Correct Answer:
D
— Oxidation
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Q. What type of reaction occurs when an alcohol reacts with an acid to form an ether?
-
A.
Esterification
-
B.
Dehydration
-
C.
Condensation
-
D.
Hydrolysis
Solution
The reaction between an alcohol and an acid to form an ether is a condensation reaction.
Correct Answer:
C
— Condensation
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Q. What type of reaction occurs when an alkene reacts with hydrogen in the presence of a catalyst?
-
A.
Hydration
-
B.
Hydrogenation
-
C.
Halogenation
-
D.
Oxidation
Solution
The reaction of an alkene with hydrogen in the presence of a catalyst is called hydrogenation.
Correct Answer:
B
— Hydrogenation
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Q. What type of reaction occurs when an alkene reacts with hydrogen?
-
A.
Hydration
-
B.
Hydrogenation
-
C.
Dehydrogenation
-
D.
Halogenation
Solution
Hydrogenation is the addition of hydrogen to an alkene, converting it to an alkane.
Correct Answer:
B
— Hydrogenation
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Q. What type of reaction occurs when an alkene reacts with hydrogen? (2023) 2023
-
A.
Hydrolysis
-
B.
Hydrogenation
-
C.
Dehydration
-
D.
Oxidation
Solution
The reaction of an alkene with hydrogen is called hydrogenation.
Correct Answer:
B
— Hydrogenation
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Q. What type of reaction occurs when an alkene reacts with water in the presence of an acid?
-
A.
Hydrolysis
-
B.
Dehydration
-
C.
Hydrogenation
-
D.
Halogenation
Solution
The reaction of an alkene with water in the presence of an acid is called hydrolysis.
Correct Answer:
A
— Hydrolysis
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Q. What type of reaction occurs when an amine is treated with a haloalkane?
-
A.
Nucleophilic substitution
-
B.
Electrophilic addition
-
C.
Elimination
-
D.
Oxidation
Solution
The reaction between an amine and a haloalkane is a nucleophilic substitution reaction.
Correct Answer:
A
— Nucleophilic substitution
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