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 will have the highest boiling point when dissolved in water?
A.
NaCl
B.
KBr
C.
MgCl2
D.
LiI
Show solution
Solution
MgCl2 dissociates into 3 ions (1 Mg²⁺ and 2 Cl⁻), leading to the highest boiling point elevation due to the greatest number of particles.
Correct Answer:
C
— MgCl2
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Q. Which of the following compounds will have the highest electron density at the ortho position due to +M effect?
A.
C6H5NO2
B.
C6H5OH
C.
C6H5Cl
D.
C6H5CH3
Show solution
Solution
C6H5OH has the highest electron density at the ortho position due to the +M effect of the -OH group.
Correct Answer:
B
— C6H5OH
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Q. Which of the following compounds will have the highest electron density due to +M effect?
A.
Phenol
B.
Benzaldehyde
C.
Nitrobenzene
D.
Aniline
Show solution
Solution
Aniline has the highest electron density due to the +M effect of the amino group.
Correct Answer:
D
— Aniline
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Q. Which of the following compounds will undergo nucleophilic substitution via an SN1 mechanism?
A.
1-chloropropane
B.
2-chloropropane
C.
3-chloropropane
D.
chlorobenzene
Show solution
Solution
3-chloropropane is a tertiary haloalkane, which favors the SN1 mechanism due to the formation of a stable tertiary carbocation.
Correct Answer:
C
— 3-chloropropane
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Q. Which of the following compounds would be most acidic due to the inductive effect?
A.
CH3COOH
B.
ClCH2COOH
C.
FCH2COOH
D.
BrCH2COOH
Show solution
Solution
FCH2COOH is the most acidic due to the strong -I effect of the fluorine atom.
Correct Answer:
C
— FCH2COOH
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Q. Which of the following compounds would be most stabilized by +M effect?
A.
Phenol
B.
Acetic acid
C.
Chloroethane
D.
Nitrobenzene
Show solution
Solution
Phenol is stabilized by the +M effect due to the presence of the -OH group, which donates electron density.
Correct Answer:
A
— Phenol
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Q. Which of the following concepts does not align with the theme of innovation? (2021)
A.
Creativity in problem-solving.
B.
Adapting to change.
C.
Sticking to traditional methods.
D.
Embracing new technologies.
Show solution
Solution
Sticking to traditional methods does not align with the theme of innovation, which encourages change and creativity.
Correct Answer:
C
— Sticking to traditional methods.
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Q. Which of the following concepts does not belong in a discussion about renewable energy?
A.
Solar power
B.
Wind energy
C.
Fossil fuels
D.
Hydropower
Show solution
Solution
Fossil fuels are non-renewable, while the others are forms of renewable energy.
Correct Answer:
C
— Fossil fuels
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Q. Which of the following concepts is least associated with economics? (2023)
A.
Supply and Demand
B.
Inflation
C.
Monetary Policy
D.
Creativity
Show solution
Solution
Creativity is not a fundamental concept in economics, while the others are key economic principles.
Correct Answer:
D
— Creativity
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Q. Which of the following concepts is least associated with technology? (2023)
A.
Innovation
B.
Automation
C.
Obsolescence
D.
Tradition
Show solution
Solution
Tradition is not associated with technology, while the others are directly related to technological advancements.
Correct Answer:
D
— Tradition
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Q. Which of the following concepts is least related to the field of economics?
A.
Supply
B.
Demand
C.
Inflation
D.
Symbiosis
Show solution
Solution
'Symbiosis' is a biological term describing a relationship between organisms, while the others are economic concepts.
Correct Answer:
D
— Symbiosis
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Q. Which of the following concepts is least related to the field of psychology?
A.
Cognition
B.
Behavior
C.
Emotion
D.
Algorithm
Show solution
Solution
'Algorithm' is a computational term, while the others are fundamental concepts in psychology.
Correct Answer:
D
— Algorithm
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Q. Which of the following concepts is least related to the theme of 'innovation'? (2023)
A.
Creativity
B.
Tradition
C.
Technology
D.
Invention
Show solution
Solution
Tradition often implies adherence to established practices, which contrasts with the idea of innovation.
Correct Answer:
B
— Tradition
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Q. Which of the following concepts is least relevant to the study of history?
A.
Chronology
B.
Artifact
C.
Narrative
D.
Algorithm
Show solution
Solution
'Algorithm' pertains to mathematics and computer science, making it irrelevant to historical study.
Correct Answer:
D
— Algorithm
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Q. Which of the following concepts is not related to economics?
A.
Supply
B.
Demand
C.
Inflation
D.
Symbiosis
Show solution
Solution
'Symbiosis' is a biological term describing interactions between organisms, while the others are economic concepts.
Correct Answer:
D
— Symbiosis
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Q. Which of the following conclusions can be drawn from the bar graph regarding consumer preferences?
A.
Consumers prefer Brand A over Brand B
B.
Brand C is gaining popularity
C.
Brand D has stable sales
D.
All brands are equally preferred
Show solution
Solution
The bar graph suggests that Brand C is gaining popularity among consumers.
Correct Answer:
B
— Brand C is gaining popularity
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Q. Which of the following conclusions can be drawn from the line graph regarding the overall market performance of the three products?
A.
All products are performing equally
B.
One product is dominating the market
C.
Sales are declining for all products
D.
Market performance is unpredictable
Show solution
Solution
The graph shows that one product consistently outperformed the others, indicating market dominance.
Correct Answer:
B
— One product is dominating the market
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Q. Which of the following conditions can lead to decreased lung compliance? (2021)
A.
Asthma
B.
Pneumonia
C.
Emphysema
D.
Chronic bronchitis
Show solution
Solution
Pneumonia can lead to decreased lung compliance due to fluid accumulation in the alveoli, making it harder for the lungs to expand.
Correct Answer:
B
— Pneumonia
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Q. Which of the following conditions can lead to impaired gas exchange in the lungs? (2021)
A.
Asthma
B.
Hypertension
C.
Diabetes
D.
Anemia
Show solution
Solution
Asthma can cause inflammation and constriction of the airways, leading to impaired gas exchange in the lungs.
Correct Answer:
A
— Asthma
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Q. Which of the following conditions can lead to respiratory acidosis? (2019)
A.
Hyperventilation
B.
Hypoventilation
C.
Normal ventilation
D.
Increased oxygen intake
Show solution
Solution
Hypoventilation leads to an accumulation of carbon dioxide in the blood, resulting in respiratory acidosis.
Correct Answer:
B
— Hypoventilation
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Q. Which of the following conditions can lead to the presence of protein in urine? (2023)
A.
Dehydration
B.
Kidney disease
C.
High protein diet
D.
All of the above
Show solution
Solution
All of the above conditions can lead to proteinuria, which is the presence of protein in urine, indicating possible kidney issues.
Correct Answer:
D
— All of the above
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Q. Which of the following conditions is characterized by difficulty in breathing due to narrowed airways? (2020)
A.
Asthma
B.
Pneumonia
C.
Bronchitis
D.
Emphysema
Show solution
Solution
Asthma is a condition that causes difficulty in breathing due to the narrowing of airways.
Correct Answer:
A
— Asthma
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Q. Which of the following conditions is necessary for total internal reflection to occur?
A.
Light must travel from a denser to a rarer medium
B.
Light must travel from a rarer to a denser medium
C.
The angle of incidence must be less than the critical angle
D.
The angle of incidence must be equal to the critical angle
Show solution
Solution
Total internal reflection occurs only when light travels from a denser medium to a rarer medium and the angle of incidence exceeds the critical angle.
Correct Answer:
A
— Light must travel from a denser to a rarer medium
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Q. Which of the following conditions must be satisfied for a rigid body to be in static equilibrium?
A.
Sum of forces is zero and sum of moments is zero
B.
Only sum of forces is zero
C.
Only sum of moments is zero
D.
Sum of forces and moments can be non-zero
Show solution
Solution
A rigid body is in static equilibrium when both the sum of forces and the sum of moments about any point are zero.
Correct Answer:
A
— Sum of forces is zero and sum of moments is zero
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Q. Which of the following conditions must be satisfied for total internal reflection to occur?
A.
Light must travel from a denser to a rarer medium.
B.
Light must travel from a rarer to a denser medium.
C.
The angle of incidence must be less than the critical angle.
D.
The angle of incidence must be equal to the critical angle.
Show solution
Solution
Total internal reflection occurs when light travels from a denser medium to a rarer medium and the angle of incidence exceeds the critical angle.
Correct Answer:
A
— Light must travel from a denser to a rarer medium.
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Q. Which of the following conditions will favor the spontaneity of a reaction?
A.
High ΔH and low ΔS
B.
Low ΔH and high ΔS
C.
High ΔH and high ΔS
D.
Low ΔH and low ΔS
Show solution
Solution
A reaction is favored when it has low ΔH (exothermic) and high ΔS (increased disorder).
Correct Answer:
B
— Low ΔH and high ΔS
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Q. Which of the following conditions will lead to a decrease in Gibbs Free Energy?
A.
Increasing temperature for an exothermic reaction.
B.
Decreasing entropy.
C.
Increasing pressure for a gas-phase reaction.
D.
Increasing ΔH.
Show solution
Solution
Increasing temperature for an exothermic reaction (ΔH < 0) can lead to a decrease in Gibbs Free Energy, making the reaction more spontaneous.
Correct Answer:
A
— Increasing temperature for an exothermic reaction.
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Q. Which of the following conditions will lead to a negative ΔG?
A.
High temperature and low ΔH
B.
Low temperature and high ΔH
C.
High temperature and high ΔS
D.
Low temperature and low ΔS
Show solution
Solution
A high temperature and high ΔS will favor a negative ΔG, making the process spontaneous.
Correct Answer:
C
— High temperature and high ΔS
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Q. Which of the following conditions will lead to a positive ΔG?
A.
High temperature and low entropy.
B.
Low temperature and high enthalpy.
C.
High temperature and high entropy.
D.
Low temperature and low enthalpy.
Show solution
Solution
A positive ΔG can occur at low temperatures when the enthalpy is high, making the reaction non-spontaneous.
Correct Answer:
B
— Low temperature and high enthalpy.
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Q. Which of the following conditions will lead to a spontaneous reaction?
A.
ΔH > 0 and ΔS < 0
B.
ΔH < 0 and ΔS > 0
C.
ΔH > 0 and ΔS > 0
D.
ΔH < 0 and ΔS < 0
Show solution
Solution
A spontaneous reaction occurs when ΔG < 0. This is true for ΔH < 0 and ΔS > 0, as it leads to a negative ΔG.
Correct Answer:
B
— ΔH < 0 and ΔS > 0
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