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 statements about prime numbers is true?
A.
Every even number greater than 2 is prime.
B.
Prime numbers can only be divided by 1 and themselves.
C.
The number 1 is considered a prime number.
D.
There are infinitely many even prime numbers.
Show solution
Solution
Prime numbers are defined as numbers greater than 1 that have no divisors other than 1 and themselves.
Correct Answer:
B
— Prime numbers can only be divided by 1 and themselves.
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Q. Which of the following statements about respiration in plants is true? (2022)
A.
It occurs only at night
B.
It is independent of photosynthesis
C.
It produces more energy than fermentation
D.
It only occurs in leaves
Show solution
Solution
Respiration in plants produces more energy than fermentation, as it fully oxidizes glucose in the presence of oxygen.
Correct Answer:
C
— It produces more energy than fermentation
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Q. Which of the following statements about RMS speed is true?
A.
RMS speed is always greater than average speed
B.
RMS speed is always less than average speed
C.
RMS speed equals average speed
D.
RMS speed is independent of molecular mass
Show solution
Solution
The RMS speed is always greater than the average speed for a distribution of speeds in a gas.
Correct Answer:
A
— RMS speed is always greater than average speed
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Q. Which of the following statements about solids is true?
A.
They have a definite shape and volume
B.
They flow easily
C.
They have low density
D.
They are incompressible
Show solution
Solution
Solids have a definite shape and volume due to the closely packed arrangement of their particles.
Correct Answer:
A
— They have a definite shape and volume
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Q. Which of the following statements about solutions is incorrect?
A.
Solutes lower the vapor pressure of solvents.
B.
Colligative properties depend on the type of solute.
C.
Boiling point elevation is a colligative property.
D.
Freezing point depression is a colligative property.
Show solution
Solution
Colligative properties depend on the number of solute particles, not their type.
Correct Answer:
B
— Colligative properties depend on the type of solute.
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Q. Which of the following statements about solutions is true? (2023)
A.
Solutes increase the boiling point of solvents
B.
Solutes decrease the freezing point of solvents
C.
Both A and B
D.
Neither A nor B
Show solution
Solution
Both statements are true; solutes affect the colligative properties of solvents.
Correct Answer:
C
— Both A and B
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Q. Which of the following statements about sound waves is true?
A.
Sound waves can travel through a vacuum
B.
Sound waves are longitudinal waves
C.
Sound waves travel faster in air than in water
D.
Sound waves are electromagnetic waves
Show solution
Solution
Sound waves are longitudinal waves, meaning the particle displacement is parallel to the direction of wave propagation.
Correct Answer:
B
— Sound waves are longitudinal waves
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Q. Which of the following statements about strong acids is true?
A.
They partially dissociate in solution
B.
They completely dissociate in solution
C.
They have high pKa values
D.
They do not conduct electricity
Show solution
Solution
Strong acids completely dissociate in solution, producing a high concentration of H+ ions, which allows them to conduct electricity.
Correct Answer:
B
— They completely dissociate in solution
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Q. Which of the following statements about surface tension is true?
A.
It increases with temperature
B.
It is independent of temperature
C.
It decreases with temperature
D.
It is only present in liquids
Show solution
Solution
Surface tension generally decreases with an increase in temperature due to increased molecular motion.
Correct Answer:
C
— It decreases with temperature
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Q. Which of the following statements about team formation is most accurate?
A.
Teams should always consist of individuals with similar backgrounds.
B.
Diversity in teams can lead to more innovative solutions.
C.
Team formation is only important in competitive environments.
D.
All team members should have the same level of expertise.
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Solution
Diversity in teams enhances creativity and leads to better problem-solving outcomes.
Correct Answer:
B
— Diversity in teams can lead to more innovative solutions.
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Q. Which of the following statements about team leadership is most accurate?
A.
Leaders should dominate discussions.
B.
Leaders must be flexible and adaptive.
C.
Leaders should avoid making decisions.
D.
Leaders are not important in team success.
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Solution
Effective leaders must be flexible and adaptive to guide their teams through challenges and changes.
Correct Answer:
B
— Leaders must be flexible and adaptive.
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Q. Which of the following statements about the 'Pigeonhole Principle' is true?
A.
It applies only to finite sets.
B.
It guarantees at least one pair of identical items in a set.
C.
It is used to prove the existence of solutions in algebra.
D.
It is irrelevant in combinatorial problems.
Show solution
Solution
The Pigeonhole Principle states that if n items are put into m containers, with n > m, then at least one container must contain more than one item.
Correct Answer:
B
— It guarantees at least one pair of identical items in a set.
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Q. Which of the following statements about the area of polygons is true?
A.
The area of a polygon can be calculated using the formula A = 1/2 * base * height.
B.
The area of a polygon is always greater than the area of its circumscribed circle.
C.
The area of a regular polygon can be calculated using the formula A = (1/4) * n * s^2 * cot(π/n).
D.
The area of a polygon is independent of its shape.
Show solution
Solution
The area of a regular polygon can indeed be calculated using the formula A = (1/4) * n * s^2 * cot(π/n), where n is the number of sides and s is the side length.
Correct Answer:
C
— The area of a regular polygon can be calculated using the formula A = (1/4) * n * s^2 * cot(π/n).
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Q. Which of the following statements about the Arrhenius equation is true?
A.
It relates temperature to the rate constant
B.
It is only applicable to zero-order reactions
C.
It does not consider activation energy
D.
It is a linear equation
Show solution
Solution
The Arrhenius equation relates temperature to the rate constant and includes the activation energy.
Correct Answer:
A
— It relates temperature to the rate constant
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Q. Which of the following statements about the Bohr model of the atom is correct?
A.
Electrons can exist in any orbit
B.
Electrons emit radiation in stable orbits
C.
Energy levels are quantized
D.
All orbits are elliptical
Show solution
Solution
In the Bohr model, energy levels are quantized, meaning electrons can only exist in specific energy states.
Correct Answer:
C
— Energy levels are quantized
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Q. Which of the following statements about the Bohr model of the hydrogen atom is correct?
A.
Electrons can exist in any orbit
B.
Only certain orbits are allowed
C.
Electrons radiate energy continuously
D.
The nucleus is positively charged
Show solution
Solution
In the Bohr model, only certain orbits (or energy levels) are allowed for electrons, which correspond to specific energy states.
Correct Answer:
B
— Only certain orbits are allowed
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Q. Which of the following statements about the boiling point of a liquid is correct?
A.
It is the temperature at which vapor pressure equals atmospheric pressure
B.
It is always higher than the melting point
C.
It is independent of atmospheric pressure
D.
It decreases with increasing molecular weight
Show solution
Solution
The boiling point is the temperature at which the vapor pressure of a liquid equals the atmospheric pressure.
Correct Answer:
A
— It is the temperature at which vapor pressure equals atmospheric pressure
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Q. Which of the following statements about the common ion effect is true?
A.
It increases solubility
B.
It decreases solubility
C.
It has no effect on solubility
D.
It only applies to strong electrolytes
Show solution
Solution
The common ion effect states that the solubility of a salt decreases in the presence of a common ion.
Correct Answer:
B
— It decreases solubility
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Q. Which of the following statements about the conservation of energy is true?
A.
Energy can be created
B.
Energy can be destroyed
C.
Energy can be transformed
D.
Energy is always lost
Show solution
Solution
The law of conservation of energy states that energy can neither be created nor destroyed, but can be transformed from one form to another.
Correct Answer:
C
— Energy can be transformed
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Q. Which of the following statements about the conservation of momentum is true?
A.
Momentum is always conserved in all collisions
B.
Momentum is conserved only in elastic collisions
C.
Momentum is conserved only in inelastic collisions
D.
Momentum is not conserved in any collision
Show solution
Solution
Momentum is conserved in all types of collisions, provided no external forces act on the system.
Correct Answer:
A
— Momentum is always conserved in all collisions
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Q. Which of the following statements about the data trends in the mixed graph is correct? (2023)
A.
All variables show a linear trend.
B.
Some variables exhibit non-linear trends.
C.
There are no trends visible in the data.
D.
The trends are only visible in the long-term data.
Show solution
Solution
The mixed graph reveals that while some variables follow a linear trend, others exhibit non-linear patterns.
Correct Answer:
B
— Some variables exhibit non-linear trends.
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Q. Which of the following statements about the decimal system is incorrect? (2023)
A.
It is a base 10 system.
B.
It uses digits from 0 to 9.
C.
It is the only system used in mathematics.
D.
It is widely used in everyday life.
Show solution
Solution
The statement that the decimal system is the only system used in mathematics is incorrect; other systems like binary and hexadecimal are also used.
Correct Answer:
C
— It is the only system used in mathematics.
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Q. Which of the following statements about the diagonals of a polygon is correct?
A.
A triangle has no diagonals.
B.
A quadrilateral has two diagonals.
C.
A pentagon has five diagonals.
D.
A hexagon has nine diagonals.
Show solution
Solution
A triangle has no diagonals, as it has only three vertices. The formula for the number of diagonals in a polygon is n(n-3)/2, where n is the number of sides.
Correct Answer:
A
— A triangle has no diagonals.
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Q. Which of the following statements about the diagonals of a polygon is true?
A.
A polygon with n sides has n diagonals.
B.
The number of diagonals in a polygon is given by n(n-3)/2.
C.
All diagonals of a polygon are equal in length.
D.
Diagonals can only be drawn in convex polygons.
Show solution
Solution
The number of diagonals in a polygon is calculated using the formula n(n-3)/2, where n is the number of sides.
Correct Answer:
B
— The number of diagonals in a polygon is given by n(n-3)/2.
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Q. Which of the following statements about the electron configuration of an atom is correct?
A.
Electrons fill orbitals in order of increasing energy
B.
Electrons can occupy the same orbital without restriction
C.
The 4s orbital is filled before the 3d orbital
D.
All of the above
Show solution
Solution
Electrons fill orbitals in order of increasing energy, and the 4s orbital is filled before the 3d orbital.
Correct Answer:
D
— All of the above
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Q. Which of the following statements about the equilibrium constant (K) is true?
A.
K changes with temperature
B.
K changes with concentration
C.
K is always greater than 1
D.
K is independent of pressure
Show solution
Solution
The equilibrium constant K is dependent on temperature; it changes if the temperature of the system changes.
Correct Answer:
A
— K changes with temperature
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Q. Which of the following statements about the Fibonacci sequence is true? (2023)
A.
It starts with 0 and 1
B.
It is an arithmetic sequence
C.
It has a constant difference
D.
It is a geometric sequence
Show solution
Solution
The Fibonacci sequence starts with 0 and 1, and each subsequent term is the sum of the previous two.
Correct Answer:
A
— It starts with 0 and 1
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Q. Which of the following statements about the graph of a function is true if it is continuous everywhere?
A.
It has no breaks or holes.
B.
It must be a polynomial function.
C.
It can only be a linear function.
D.
It must have at least one x-intercept.
Show solution
Solution
A continuous function has no breaks or holes in its graph.
Correct Answer:
A
— It has no breaks or holes.
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Q. Which of the following statements about the graph of a quadratic function is true?
A.
It is always a parabola that opens upwards.
B.
It can be a straight line.
C.
It can intersect the x-axis at three points.
D.
It is symmetric about its vertex.
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Solution
The graph of a quadratic function is symmetric about its vertex.
Correct Answer:
D
— It is symmetric about its vertex.
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Q. Which of the following statements about the Heisenberg Uncertainty Principle is true?
A.
It applies only to macroscopic objects
B.
It states that position and momentum can be known exactly
C.
It implies a limit to the precision of simultaneous measurements
D.
It is not applicable to photons
Show solution
Solution
The Heisenberg Uncertainty Principle states that there is a limit to the precision with which certain pairs of physical properties, such as position and momentum, can be known simultaneously.
Correct Answer:
C
— It implies a limit to the precision of simultaneous measurements
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