Major Competitive Exams MCQ & Objective Questions
Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.
What You Will Practise Here
Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams
Exam Relevance
The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.
Common Mistakes Students Make
Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam
FAQs
Question: How can I improve my performance in Major Competitive Exams?Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Question: What types of questions should I focus on for these exams?Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.
Question: Are there specific strategies for tackling objective questions?Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.
Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!
Q. What type of polymerization involves the formation of a polymer by the reaction of monomers with functional groups?
A.
Addition polymerization
B.
Condensation polymerization
C.
Chain-growth polymerization
D.
Step-growth polymerization
Show solution
Solution
Condensation polymerization involves the reaction of monomers with functional groups, resulting in the elimination of small molecules.
Correct Answer:
B
— Condensation polymerization
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Q. What type of polymerization involves the formation of a polymer by the reaction of monomers with unsaturated bonds?
A.
Addition polymerization
B.
Condensation polymerization
C.
Chain-growth polymerization
D.
Step-growth polymerization
Show solution
Solution
Addition polymerization involves the reaction of monomers with unsaturated bonds to form a polymer.
Correct Answer:
A
— Addition polymerization
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Q. What type of polymerization involves the formation of a polymer from monomers with the elimination of a small molecule?
A.
Addition polymerization
B.
Condensation polymerization
C.
Chain-growth polymerization
D.
Step-growth polymerization
Show solution
Solution
Condensation polymerization involves the elimination of a small molecule, such as water.
Correct Answer:
B
— Condensation polymerization
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Q. What type of protein is hemoglobin?
A.
Enzyme
B.
Structural protein
C.
Transport protein
D.
Hormonal protein
Show solution
Solution
Hemoglobin is a transport protein that carries oxygen in the blood.
Correct Answer:
C
— Transport protein
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Q. What type of protein structure involves multiple polypeptide chains?
A.
Primary structure
B.
Secondary structure
C.
Tertiary structure
D.
Quaternary structure
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Solution
The quaternary structure of a protein is formed when two or more polypeptide chains assemble into a functional protein complex.
Correct Answer:
D
— Quaternary structure
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Q. What type of radiation is emitted during alpha decay?
A.
Electrons
B.
Helium nuclei
C.
Gamma rays
D.
Neutrons
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Solution
During alpha decay, helium nuclei (alpha particles) are emitted from the nucleus.
Correct Answer:
B
— Helium nuclei
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Q. What type of radiation is emitted during beta decay?
A.
Alpha particles
B.
Beta particles
C.
Gamma rays
D.
Neutrons
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Solution
Beta decay involves the emission of beta particles, which are electrons or positrons.
Correct Answer:
B
— Beta particles
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Q. What type of radiation is most penetrating?
A.
Alpha radiation
B.
Beta radiation
C.
Gamma radiation
D.
Neutron radiation
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Solution
Gamma radiation is the most penetrating type of radiation.
Correct Answer:
C
— Gamma radiation
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Q. What type of reaction do alkanes typically undergo?
A.
Addition
B.
Substitution
C.
Elimination
D.
Hydrolysis
Show solution
Solution
Alkanes typically undergo substitution reactions, especially with halogens.
Correct Answer:
B
— Substitution
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Q. What type of reaction do alkenes typically undergo?
A.
Substitution
B.
Addition
C.
Elimination
D.
Redox
Show solution
Solution
Alkenes typically undergo addition reactions due to the presence of double bonds.
Correct Answer:
B
— Addition
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Q. What type of reaction forms a disaccharide from two monosaccharides? (2022)
A.
Hydrolysis
B.
Condensation
C.
Oxidation
D.
Reduction
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
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
Show solution
Solution
The conversion of alkenes to alkanes involves the addition of hydrogen (hydrogenation).
Correct Answer:
A
— Addition
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