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. Which of the following compounds does NOT exhibit optical isomerism?
A.
Lactic acid
B.
Tartaric acid
C.
2-butanol
D.
Butane
Show solution
Solution
Butane does not have a chiral center and therefore does not exhibit optical isomerism.
Correct Answer:
D
— Butane
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Q. Which of the following compounds does NOT show optical isomerism?
A.
Lactic acid
B.
Tartaric acid
C.
2-Butanol
D.
Butane
Show solution
Solution
Butane does not show optical isomerism as it does not have a chiral center.
Correct Answer:
D
— Butane
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Q. Which of the following compounds exhibits geometric isomerism?
A.
1-butene
B.
2-butene
C.
butane
D.
cyclohexane
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Solution
2-butene has a double bond between the second and third carbon atoms, allowing for cis and trans isomers.
Correct Answer:
B
— 2-butene
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Q. Which of the following compounds exhibits hydrogen bonding?
A.
HCl
B.
NH3
C.
CH4
D.
NaCl
Show solution
Solution
NH3 exhibits hydrogen bonding due to the presence of a nitrogen atom bonded to hydrogen.
Correct Answer:
B
— NH3
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Q. Which of the following compounds exhibits sp3d hybridization?
A.
SF4
B.
XeF2
C.
NH3
D.
C2H4
Show solution
Solution
In SF4, the sulfur atom is sp3d hybridized, resulting in a seesaw molecular geometry.
Correct Answer:
A
— SF4
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Q. Which of the following compounds has a dipole moment? (2023)
A.
CO2
B.
CH4
C.
HCl
D.
CCl4
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Solution
HCl has a dipole moment because it is a polar molecule with a significant difference in electronegativity between hydrogen and chlorine.
Correct Answer:
C
— HCl
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Q. Which of the following compounds has a linear shape?
A.
H2O
B.
C2H2
C.
NH3
D.
CH4
Show solution
Solution
C2H2 (ethyne) has a linear shape due to sp hybridization of carbon.
Correct Answer:
B
— C2H2
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Q. Which of the following compounds has a trigonal planar geometry?
A.
CH4
B.
BF3
C.
NH3
D.
H2O
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Solution
BF3 has a trigonal planar geometry due to the sp2 hybridization of boron.
Correct Answer:
B
— BF3
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Q. Which of the following compounds has a triple bond? (2022)
A.
Ethylene
B.
Acetylene
C.
Propylene
D.
Butane
Show solution
Solution
Acetylene (C2H2) contains a triple bond between the two carbon atoms.
Correct Answer:
B
— Acetylene
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Q. Which of the following compounds has the highest boiling point?
A.
CH4
B.
C2H6
C.
C3H8
D.
C4H10
Show solution
Solution
C4H10 (butane) has the highest boiling point due to its larger molecular size and greater van der Waals forces.
Correct Answer:
D
— C4H10
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Q. Which of the following compounds has the highest electronegativity difference?
A.
HCl
B.
NaCl
C.
CO
D.
CH4
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Solution
Sodium chloride (NaCl) has the highest electronegativity difference between sodium and chlorine.
Correct Answer:
B
— NaCl
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Q. Which of the following compounds is a branched alkane? (2022)
A.
C5H12
B.
C4H10
C.
C3H8
D.
C2H6
Show solution
Solution
C5H12 can exist as both straight-chain (pentane) and branched (isopentane) forms.
Correct Answer:
A
— C5H12
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Q. Which of the following compounds is a common oxidation state of vanadium? (2022)
A.
V2O5
B.
VO
C.
V2O3
D.
All of the above
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Solution
All the listed compounds represent common oxidation states of vanadium: +5 in V2O5, +2 in VO, and +3 in V2O3.
Correct Answer:
D
— All of the above
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Q. Which of the following compounds is a common oxidizing agent? (2019)
A.
HCl
B.
KMnO4
C.
NaCl
D.
CaO
Show solution
Solution
Potassium permanganate (KMnO4) is a well-known oxidizing agent used in various chemical reactions.
Correct Answer:
B
— KMnO4
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Q. Which of the following compounds is a cyclic alkane? (2022)
A.
Cyclopropane
B.
Butene
C.
Hexane
D.
Pentene
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Solution
Cyclopropane is a cyclic alkane with three carbon atoms in a ring.
Correct Answer:
A
— Cyclopropane
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Q. Which of the following compounds is a cyclic hydrocarbon?
A.
C6H12
B.
C5H10
C.
C4H8
D.
C3H6
Show solution
Solution
C6H12 can be cyclohexane, which is a cyclic hydrocarbon.
Correct Answer:
A
— C6H12
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Q. Which of the following compounds is a cycloalkane?
A.
C3H6
B.
C5H10
C.
C4H8
D.
C6H12
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Solution
C5H10 can be a cycloalkane (cyclopentane) as it forms a ring structure.
Correct Answer:
B
— C5H10
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Q. Which of the following compounds is a derivative of carboxylic acid?
A.
Alcohol
B.
Ester
C.
Aldehyde
D.
Ketone
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Solution
Esters are derivatives of carboxylic acids formed by the reaction of an acid and an alcohol.
Correct Answer:
B
— Ester
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Q. Which of the following compounds is a haloarene?
A.
Chloroethane
B.
Bromobenzene
C.
Iodobutane
D.
Fluoropropane
Show solution
Solution
Bromobenzene contains a benzene ring with a bromine substituent, making it a haloarene.
Correct Answer:
B
— Bromobenzene
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Q. Which of the following compounds is a hydrogen halide? (2022)
A.
H2O
B.
NH3
C.
HCl
D.
CH4
Show solution
Solution
Hydrogen chloride (HCl) is a hydrogen halide, which is a binary compound of hydrogen and a halogen.
Correct Answer:
C
— HCl
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Q. Which of the following compounds is a ketone?
A.
CH3CHO
B.
C2H5OH
C.
C3H6O
D.
C4H8
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Solution
C3H6O is a ketone as it has a carbonyl group (C=O) between two carbon atoms.
Correct Answer:
C
— C3H6O
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Q. Which of the following compounds is a ketone? (2023) 2023
A.
Propanal
B.
Butanone
C.
Benzaldehyde
D.
Ethanal
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Solution
Butanone is a ketone, characterized by having the carbonyl group (C=O) between two carbon atoms.
Correct Answer:
B
— Butanone
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Q. Which of the following compounds is a pair of structural isomers?
A.
C2H6 and C2H4
B.
C3H8 and C3H6
C.
C4H10 and C4H10
D.
C5H12 and C5H12
Show solution
Solution
C2H6 (ethane) and C2H4 (ethylene) have different molecular structures, thus they are structural isomers.
Correct Answer:
A
— C2H6 and C2H4
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Q. Which of the following compounds is a phenol?
A.
Benzyl alcohol
B.
Cyclohexanol
C.
Phenol
D.
Ethanol
Show solution
Solution
Phenol is an aromatic compound with a hydroxyl group directly attached to a benzene ring.
Correct Answer:
C
— Phenol
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Q. Which of the following compounds is a primary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(CH3)3N
D.
C6H5NH2
Show solution
Solution
CH3NH2 is a primary amine as it has one alkyl group attached to the nitrogen.
Correct Answer:
A
— CH3NH2
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Q. Which of the following compounds is a primary haloalkane?
A.
CH3CH2CH2Cl
B.
CH3Cl
C.
C2H5CCl3
D.
C6H5Cl
Show solution
Solution
CH3CH2CH2Cl is a primary haloalkane as the carbon attached to the halogen is bonded to only one other carbon.
Correct Answer:
A
— CH3CH2CH2Cl
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Q. Which of the following compounds is a product of the reaction between an aldehyde and a Grignard reagent?
A.
Alcohol
B.
Ketone
C.
Carboxylic acid
D.
Ester
Show solution
Solution
The reaction of an aldehyde with a Grignard reagent produces a primary alcohol.
Correct Answer:
A
— Alcohol
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Q. Which of the following compounds is a saturated hydrocarbon?
A.
C2H2
B.
C3H4
C.
C4H8
D.
C5H12
Show solution
Solution
C5H12 (pentane) is a saturated hydrocarbon with single bonds only.
Correct Answer:
D
— C5H12
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Q. Which of the following compounds is a strong acid formed from hydrogen?
A.
HCl
B.
H2O
C.
NH3
D.
CH4
Show solution
Solution
Hydrochloric acid (HCl) is a strong acid formed from hydrogen.
Correct Answer:
A
— HCl
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Q. Which of the following compounds is a strong acid that contains hydrogen? (2022)
A.
HCl
B.
NaOH
C.
NH3
D.
H2O
Show solution
Solution
Hydrochloric acid (HCl) is a strong acid that contains hydrogen.
Correct Answer:
A
— HCl
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