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 IUPAC name for the compound CH3-CH(CH3)-CH2-CH3?
A.
2-Methylbutane
B.
3-Methylbutane
C.
Butane
D.
Pentane
Show solution
Solution
The longest chain has four carbons, and there is a methyl group on the second carbon, making it 2-Methylbutane.
Correct Answer:
A
— 2-Methylbutane
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Q. What is the IUPAC name for the compound CH3-CH(CH3)-CH2-CHO?
A.
3-Methylbutanal
B.
2-Methylbutanal
C.
4-Methylbutanal
D.
Pentanal
Show solution
Solution
The longest chain has four carbons with an aldehyde group, and the methyl group is on the second carbon, making it 2-Methylbutanal.
Correct Answer:
B
— 2-Methylbutanal
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Q. What is the IUPAC name for the compound CH3-CH2-CH2-CH2-COOH?
A.
Pentanoic acid
B.
Butanoic acid
C.
Hexanoic acid
D.
Heptanoic acid
Show solution
Solution
The longest carbon chain contains five carbons, and the functional group is a carboxylic acid, hence the name is Pentanoic acid.
Correct Answer:
A
— Pentanoic acid
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Q. What is the IUPAC name for the compound with the formula C2H5-CHO?
A.
Ethanal
B.
Propanoic acid
C.
Acetaldehyde
D.
Butanal
Show solution
Solution
The compound is an aldehyde with two carbons, which is named Acetaldehyde or Ethanal.
Correct Answer:
C
— Acetaldehyde
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Q. What is the IUPAC name for the compound with the formula C2H5-CO-CH3?
A.
2-Pentanone
B.
3-Pentanone
C.
Butan-2-one
D.
Butan-3-one
Show solution
Solution
The compound has a ketone functional group with 4 carbons, making it Butan-2-one.
Correct Answer:
C
— Butan-2-one
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Q. What is the IUPAC name for the compound with the formula C2H5OH?
A.
Ethanol
B.
Ethylene glycol
C.
Ethyl alcohol
D.
Dimethyl ether
Show solution
Solution
C2H5OH is an alcohol with 2 carbons, named Ethanol.
Correct Answer:
A
— Ethanol
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Q. What is the IUPAC name for the compound with the formula C3H6?
A.
Propene
B.
Cyclopropane
C.
Propyne
D.
Propane
Show solution
Solution
C3H6 is an alkene with three carbons, which is named Propene.
Correct Answer:
A
— Propene
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Q. What is the IUPAC name for the compound with the formula C3H7-CO-CH3?
A.
Butan-2-one
B.
Propan-2-one
C.
Pentanal
D.
Butanal
Show solution
Solution
The compound is a ketone with 4 carbons, and the carbonyl group is on the second carbon, making it Butan-2-one.
Correct Answer:
A
— Butan-2-one
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Q. What is the IUPAC name for the compound with the formula C3H7-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Isobutyric acid
Show solution
Solution
The compound is isobutyric acid, which is a branched-chain carboxylic acid with three carbons.
Correct Answer:
D
— Isobutyric acid
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Q. What is the IUPAC name for the compound with the formula C3H7OH?
A.
Propan-1-ol
B.
Propan-2-ol
C.
Butan-1-ol
D.
Methanol
Show solution
Solution
The compound is an alcohol with three carbons and the hydroxyl group on the second carbon, hence the name is Propan-2-ol.
Correct Answer:
B
— Propan-2-ol
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Q. What is the IUPAC name for the compound with the formula C3H8?
A.
Propene
B.
Propane
C.
Propyne
D.
Cyclopropane
Show solution
Solution
C3H8 is propane, which is an alkane.
Correct Answer:
B
— Propane
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Q. What is the IUPAC name for the compound with the formula C4H10O?
A.
Butanol
B.
Butanal
C.
Ethyl methyl ether
D.
Tert-butanol
Show solution
Solution
C4H10O can be identified as an alcohol with 4 carbons, which is named Butanol.
Correct Answer:
A
— Butanol
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Q. What is the IUPAC name for the compound with the formula C4H8O?
A.
Butanal
B.
Butan-2-ol
C.
Butan-1-ol
D.
Cyclobutanol
Show solution
Solution
C4H8O can correspond to butan-2-ol, which is a secondary alcohol.
Correct Answer:
B
— Butan-2-ol
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Q. What is the IUPAC name for the compound with the formula C4H9-CHO?
A.
Butanal
B.
Pentanal
C.
Propionaldehyde
D.
Isobutyraldehyde
Show solution
Solution
The compound has four carbons and an aldehyde functional group, making it Butanal.
Correct Answer:
A
— Butanal
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Q. What is the IUPAC name for the compound with the formula C4H9-CO-CH3?
A.
Butan-2-one
B.
Pentanal
C.
Butan-1-one
D.
Propan-2-one
Show solution
Solution
The compound is a ketone with a four-carbon chain, thus it is Butan-2-one.
Correct Answer:
A
— Butan-2-one
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Q. What is the IUPAC name for the compound with the formula C4H9-COOH?
A.
Butanoic acid
B.
Pentanoic acid
C.
Hexanoic acid
D.
Heptanoic acid
Show solution
Solution
The compound has four carbons in the longest chain and a carboxylic acid functional group, hence it is Butanoic acid.
Correct Answer:
A
— Butanoic acid
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Q. What is the IUPAC name for the compound with the formula C4H9Cl?
A.
1-Chlorobutane
B.
2-Chlorobutane
C.
Chloropropane
D.
Butyl chloride
Show solution
Solution
The compound is a chlorinated alkane with four carbons, and the chlorine is on the first carbon, making it 1-Chlorobutane.
Correct Answer:
A
— 1-Chlorobutane
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Q. What is the IUPAC name for the compound with the formula C5H10O?
A.
Pentanal
B.
2-Pentanone
C.
3-Pentanone
D.
Butanol
Show solution
Solution
The compound is a ketone with a five-carbon chain, and the carbonyl group is on the second carbon, making it 2-Pentanone.
Correct Answer:
B
— 2-Pentanone
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Q. What is the IUPAC name for the compound with the formula C5H11-COOH?
A.
Pentanoic acid
B.
Hexanoic acid
C.
Butanoic acid
D.
Heptanoic acid
Show solution
Solution
The longest carbon chain contains five carbons, and the functional group is a carboxylic acid, hence the name is Pentanoic acid.
Correct Answer:
A
— Pentanoic acid
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Q. What is the IUPAC name for the compound with the formula C5H11-NH2?
A.
Pentylamine
B.
Butylamine
C.
Hexylamine
D.
Amylamine
Show solution
Solution
The compound is a primary amine with five carbons, hence it is named Pentylamine.
Correct Answer:
A
— Pentylamine
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Q. What is the IUPAC name for the compound with the formula C6H12?
A.
Hexane
B.
Cyclohexane
C.
1-Hexene
D.
2-Hexene
Show solution
Solution
C6H12 is a straight-chain alkane with 6 carbons, which is named Hexane.
Correct Answer:
A
— Hexane
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Q. What is the IUPAC name for the compound with the formula C6H5-CH=CH2?
A.
Benzyl ethylene
B.
Styrene
C.
Phenylpropene
D.
Vinylbenzene
Show solution
Solution
The compound is an alkene with a phenyl group, hence the IUPAC name is Styrene.
Correct Answer:
B
— Styrene
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Q. What is the IUPAC name for the compound with the formula CH3-CH(CH3)-C(=O)-OH?
A.
3-Hydroxybutanoic acid
B.
2-Hydroxybutanoic acid
C.
3-Hydroxypropanoic acid
D.
2-Hydroxypropanoic acid
Show solution
Solution
The compound has a hydroxyl group on the second carbon of a four-carbon chain with a carboxylic acid, making it 2-Hydroxybutanoic acid.
Correct Answer:
B
— 2-Hydroxybutanoic acid
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Q. What is the IUPAC name for the compound with the formula CH3-CH(CH3)-CH2-CHO?
A.
3-Methylbutanal
B.
2-Methylbutanal
C.
4-Methylbutanal
D.
Pentanal
Show solution
Solution
The longest chain has 4 carbons with an aldehyde functional group, and a methyl group on the second carbon, hence 2-Methylbutanal.
Correct Answer:
B
— 2-Methylbutanal
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Q. What is the IUPAC name for the compound with the formula CH3-CH2-CH(CH3)-OH?
A.
2-Propanol
B.
2-Butanol
C.
3-Butanol
D.
1-Butanol
Show solution
Solution
The longest chain has 4 carbons with an alcohol group on the second carbon, hence it is 2-Butanol.
Correct Answer:
B
— 2-Butanol
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Q. What is the IUPAC name for the compound with the formula CH3-CH2-CH2-CH2-COOH?
A.
Pentanoic acid
B.
Butanoic acid
C.
Hexanoic acid
D.
Heptanoic acid
Show solution
Solution
The compound has a carboxylic acid functional group and five carbons, making it Pentanoic acid.
Correct Answer:
A
— Pentanoic acid
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Q. What is the IUPAC name for the compound with the formula CH3-CO-CH2-CH3?
A.
Butan-2-one
B.
Butan-1-one
C.
Propan-2-one
D.
Pentanal
Show solution
Solution
The compound is a ketone with 4 carbons, and the carbonyl group is on the second carbon, making it Butan-2-one.
Correct Answer:
A
— Butan-2-one
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Q. What is the IUPAC name for the compound with the structure CH3-CH(CH3)-C(CH3)2-COOH?
A.
2-Methyl-3-pentanoic acid
B.
3-Methyl-2-pentanoic acid
C.
2,3-Dimethylbutanoic acid
D.
3,3-Dimethylbutanoic acid
Show solution
Solution
The compound has a carboxylic acid and two methyl groups on the third carbon, making it 3,3-Dimethylbutanoic acid.
Correct Answer:
D
— 3,3-Dimethylbutanoic acid
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Q. What is the IUPAC name for the compound with the structure CH3-CH(CH3)-C(CH3)2-CH2-CH3?
A.
2,3-Dimethylpentane
B.
3,3-Dimethylpentane
C.
2,2-Dimethylpentane
D.
3-Methylpentane
Show solution
Solution
The longest chain has 5 carbons, with two methyl groups on the third carbon, so the name is 3,3-Dimethylpentane.
Correct Answer:
B
— 3,3-Dimethylpentane
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Q. What is the IUPAC name for the compound with the structure CH3-CH(CH3)-CH2-CHO?
A.
2-Methylbutanal
B.
3-Methylbutanal
C.
2-Butanal
D.
3-Butanal
Show solution
Solution
The longest chain has four carbons, and the aldehyde is at the end, making it 2-Methylbutanal.
Correct Answer:
A
— 2-Methylbutanal
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