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 is the product of the oxidation of a primary alcohol? (2020) 2020
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alkene
Show solution
Solution
The oxidation of a primary alcohol first produces an aldehyde, which can further oxidize to a carboxylic acid.
Correct Answer:
A
— Aldehyde
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Q. What is the product of the oxidation of a primary alcohol? (2023) 2023
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alkane
Show solution
Solution
The oxidation of a primary alcohol results in the formation of an aldehyde.
Correct Answer:
A
— Aldehyde
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Q. What is the product of the oxidation of a secondary alcohol? (2021)
A.
Aldehyde
B.
Ketone
C.
Carboxylic acid
D.
Alcohol
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Solution
Secondary alcohols are oxidized to ketones, which contain a carbonyl group (C=O) flanked by two carbon atoms.
Correct Answer:
B
— Ketone
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Q. What is the product of the oxidation of an aldehyde? (2023)
A.
Alcohol
B.
Carboxylic acid
C.
Ketone
D.
Alkane
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Solution
The oxidation of an aldehyde results in the formation of a carboxylic acid.
Correct Answer:
B
— Carboxylic acid
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Q. What is the product of the oxidation of ethanol?
A.
Acetic acid
B.
Methanol
C.
Butanoic acid
D.
Propanoic acid
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Solution
Ethanol oxidizes to acetic acid when reacted with an oxidizing agent.
Correct Answer:
A
— Acetic acid
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Q. What is the product of the oxidation of propan-2-ol?
A.
Propanal
B.
Acetone
C.
Propanoic acid
D.
Butan-2-one
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Solution
Propan-2-ol oxidizes to form Acetone (CH3COCH3).
Correct Answer:
B
— Acetone
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Q. What is the product of the ozonolysis of 1-pentene?
A.
Pentanal
B.
Acetaldehyde
C.
Butan-2-one
D.
Propanoic acid
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Solution
Ozonolysis of 1-pentene yields pentanal as one of the products.
Correct Answer:
A
— Pentanal
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Q. What is the product of the reaction between 1-bromobutane and sodium ethoxide in ethanol? (2020)
A.
Butane
B.
Ethyl butanoate
C.
Butyl ethyl ether
D.
1-Butanol
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Solution
The reaction of 1-bromobutane with sodium ethoxide leads to the formation of butyl ethyl ether through an SN2 mechanism.
Correct Answer:
C
— Butyl ethyl ether
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Q. What is the product of the reaction between 1-bromobutane and sodium hydroxide in ethanol? (2021)
A.
Butanol
B.
Butyl bromide
C.
Butyl ether
D.
Butyric acid
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Solution
The reaction of 1-bromobutane with sodium hydroxide in ethanol leads to the formation of butanol through nucleophilic substitution.
Correct Answer:
A
— Butanol
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Q. What is the product of the reaction between 1-bromopropane and sodium ethoxide?
A.
Ethyl propyl ether
B.
Propyl ethyl ether
C.
1-bromo-2-ethylpropane
D.
No reaction
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Solution
The reaction of 1-bromopropane with sodium ethoxide leads to the formation of ethyl propyl ether through nucleophilic substitution.
Correct Answer:
A
— Ethyl propyl ether
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Q. What is the product of the reaction between 1-bromopropane and sodium hydroxide in ethanol?
A.
Propene
B.
1-Propanol
C.
2-Propanol
D.
No reaction
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Solution
1-bromopropane reacts with sodium hydroxide in ethanol to form 1-Propanol via nucleophilic substitution.
Correct Answer:
B
— 1-Propanol
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Q. What is the product of the reaction between 1-butyne and HBr?
A.
1-bromobutane
B.
2-bromobutane
C.
butane
D.
butyne
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Solution
The reaction of 1-butyne with HBr leads to the formation of 2-bromobutane due to Markovnikov's rule.
Correct Answer:
B
— 2-bromobutane
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Q. What is the product of the reaction between 1-chlorobutane and potassium cyanide?
A.
1-cyanobutane
B.
2-cyanobutane
C.
butane
D.
no reaction
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Solution
1-cyanobutane is formed through nucleophilic substitution where the cyanide ion acts as a nucleophile.
Correct Answer:
A
— 1-cyanobutane
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Q. What is the product of the reaction between a carboxylic acid and an alcohol?
A.
Amide
B.
Ester
C.
Aldehyde
D.
Ketone
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Solution
The reaction between a carboxylic acid and an alcohol produces an ester.
Correct Answer:
B
— Ester
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Q. What is the product of the reaction between acetic acid and sodium bicarbonate?
A.
Sodium acetate
B.
Carbon dioxide
C.
Water
D.
All of the above
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Solution
The reaction produces sodium acetate, carbon dioxide, and water, making 'All of the above' the correct answer.
Correct Answer:
D
— All of the above
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Q. What is the product of the reaction between acetone and iodine in the presence of a base?
A.
Iodoacetone
B.
Iodoform
C.
Bromoacetone
D.
Chloroacetone
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Solution
The product is Iodoform, formed from the reaction of acetone with iodine in the presence of a base.
Correct Answer:
B
— Iodoform
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Q. What is the product of the reaction between ammonia and an alkyl halide? (2023)
A.
Amine
B.
Alcohol
C.
Ether
D.
Aldehyde
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Solution
The product of the reaction between ammonia and an alkyl halide is an amine.
Correct Answer:
A
— Amine
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Q. What is the product of the reaction between ammonia and ethyl bromide?
A.
Ethylamine
B.
Diethylamine
C.
Triethylamine
D.
Ammonium bromide
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Solution
The reaction produces Ethylamine as ammonia acts as a nucleophile and replaces the bromine atom.
Correct Answer:
A
— Ethylamine
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Q. What is the product of the reaction between an alcohol and a carboxylic acid?
A.
Ester
B.
Ether
C.
Aldehyde
D.
Ketone
Show solution
Solution
The reaction between an alcohol and a carboxylic acid produces an ester through a process called esterification.
Correct Answer:
A
— Ester
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Q. What is the product of the reaction between an aldehyde and a Grignard reagent?
A.
Alcohol
B.
Ketone
C.
Carboxylic acid
D.
Alkane
Show solution
Solution
The reaction between an aldehyde and a Grignard reagent produces a secondary alcohol after hydrolysis.
Correct Answer:
A
— Alcohol
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Q. What is the product of the reaction between an aldehyde and a primary amine?
A.
Imine
B.
Amide
C.
Amino acid
D.
Alcohol
Show solution
Solution
The reaction between an aldehyde and a primary amine produces an imine.
Correct Answer:
A
— Imine
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Q. What is the product of the reaction between an amine and an acid?
A.
Amide
B.
Salt
C.
Ester
D.
Alcohol
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Solution
The reaction between an amine and an acid produces a salt, as the amine acts as a base and accepts a proton from the acid.
Correct Answer:
B
— Salt
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Q. What is the product of the reaction between an amine and an acyl chloride?
A.
Amide
B.
Ester
C.
Carboxylic acid
D.
Alcohol
Show solution
Solution
Amines react with acyl chlorides to form amides through a nucleophilic acyl substitution reaction.
Correct Answer:
A
— Amide
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Q. What is the product of the reaction between benzaldehyde and phenylmagnesium bromide?
A.
Benzyl alcohol
B.
Benzophenone
C.
Diphenylmethanol
D.
Benzene
Show solution
Solution
The reaction produces Diphenylmethanol when benzaldehyde reacts with phenylmagnesium bromide.
Correct Answer:
C
— Diphenylmethanol
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Q. What is the product of the reaction between benzene and bromine in the presence of FeBr3?
A.
Bromobenzene
B.
Benzyl bromide
C.
Bromocyclohexane
D.
Phenol
Show solution
Solution
The reaction of benzene with bromine in the presence of a Lewis acid like FeBr3 leads to the formation of bromobenzene.
Correct Answer:
A
— Bromobenzene
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Q. What is the product of the reaction between chlorobenzene and sodium hydroxide at high temperature?
A.
Phenol
B.
Benzyl alcohol
C.
Chlorobenzene
D.
Sodium phenoxide
Show solution
Solution
Chlorobenzene reacts with sodium hydroxide in the presence of heat to form phenol via nucleophilic substitution.
Correct Answer:
A
— Phenol
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Q. What is the product of the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)? (2022)
A.
Sodium chloride and water
B.
Sodium chloride and hydrogen
C.
Hydrogen and oxygen
D.
Sodium and water
Show solution
Solution
The reaction between HCl and NaOH produces sodium chloride (NaCl) and water (H2O).
Correct Answer:
A
— Sodium chloride and water
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Q. What is the product of the reaction between hydrochloric acid and sodium bicarbonate? (2022)
A.
Sodium chloride
B.
Carbon dioxide
C.
Water
D.
All of the above
Show solution
Solution
The reaction produces sodium chloride, carbon dioxide, and water: HCl + NaHCO3 → NaCl + CO2 + H2O.
Correct Answer:
D
— All of the above
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Q. What is the product of the reaction between phenol and bromine water?
A.
Bromobenzene
B.
2,4,6-tribromophenol
C.
Bromophenol
D.
Bromobutane
Show solution
Solution
Phenol reacts with bromine water to form 2,4,6-tribromophenol, a white precipitate.
Correct Answer:
B
— 2,4,6-tribromophenol
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Q. What is the product of the reaction between phenol and bromine?
A.
Bromobenzene
B.
Bromophenol
C.
Bromobutane
D.
No reaction
Show solution
Solution
Phenol reacts with bromine to form bromophenol, which is a substitution reaction.
Correct Answer:
B
— Bromophenol
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