Major Competitive Exams

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Major Competitive Exams

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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!

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Q. Which of the following describes a dependent system of linear equations?

A. The equations have no solutions.
B. The equations have exactly one solution.
C. The equations have infinitely many solutions.
D. The equations are parallel.

Solution

Dependent systems have infinitely many solutions as they represent the same line.

Correct Answer: C — The equations have infinitely many solutions.

Q. Which of the following describes a polynomial function?

A. A function that can be expressed as a sum of powers of x with constant coefficients.
B. A function that includes variables in the denominator.
C. A function that has a variable exponent.
D. A function that is defined only for integer values of x.

Solution

A polynomial function is defined as a function that can be expressed as a sum of powers of x with constant coefficients.

Correct Answer: A — A function that can be expressed as a sum of powers of x with constant coefficients.

Q. Which of the following describes a polynomial that is not a function?

A. A polynomial with a degree of 0.
B. A polynomial with a degree of 1.
C. A polynomial that includes a variable in the denominator.
D. A polynomial with complex coefficients.

Solution

A polynomial that includes a variable in the denominator is not a polynomial function.

Correct Answer: C — A polynomial that includes a variable in the denominator.

Q. Which of the following describes a polynomial that is not a polynomial function?

A. x^2 + 3x - 5
B. 1/x + 2
C. 3x^3 - 4x + 1
D. 2x^4 + x^2

Solution

The expression 1/x + 2 is not a polynomial function because it contains a term with a negative exponent.

Correct Answer: B — 1/x + 2

Q. Which of the following describes a random error? (2020)

A. Consistent error in measurements
B. Error due to environmental factors
C. Error due to instrument calibration
D. Error that can be corrected

Solution

Random errors are caused by unpredictable fluctuations in the measurement process, often due to environmental factors.

Correct Answer: B — Error due to environmental factors

Q. Which of the following describes circular polarization?

A. Waves oscillate in a straight line
B. Waves oscillate in a plane at a constant angle
C. Waves rotate in a circular motion as they propagate
D. Waves are randomly oriented

Solution

In circular polarization, the electric field vector rotates in a circular motion as the wave propagates.

Correct Answer: C — Waves rotate in a circular motion as they propagate

Q. Which of the following describes codominance? (2019)

A. One allele is dominant over another
B. Both alleles are expressed equally
C. Neither allele is expressed
D. One allele is partially dominant

Solution

Codominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Correct Answer: B — Both alleles are expressed equally

Q. Which of the following describes overdamped oscillations?

A. System oscillates with decreasing amplitude
B. System returns to equilibrium without oscillating
C. System oscillates indefinitely
D. System oscillates with constant amplitude

Solution

In overdamped oscillations, the system returns to equilibrium without oscillating due to strong damping.

Correct Answer: B — System returns to equilibrium without oscillating

Q. Which of the following describes Poisson's ratio?

A. Lateral strain / Longitudinal strain
B. Longitudinal strain / Lateral strain
C. Stress / Strain
D. Strain / Stress

Solution

Poisson's ratio (ν) is defined as the ratio of lateral strain to longitudinal strain.

Correct Answer: A — Lateral strain / Longitudinal strain

Q. Which of the following describes the arrangement of atoms in a hexagonal close-packed (HCP) structure? (2019)

A. ABABAB
B. ABCABC
C. AABB
D. AAABBB

Solution

In a hexagonal close-packed (HCP) structure, the arrangement of atoms follows an ABABAB pattern.

Correct Answer: A — ABABAB

Q. Which of the following describes the arrangement of particles in a gas? (2023)

A. Tightly packed in a fixed position
B. Close together but can move past each other
C. Far apart and moving freely
D. Arranged in a regular pattern

Solution

In gases, particles are far apart and move freely, allowing them to fill the container they are in.

Correct Answer: C — Far apart and moving freely

Q. Which of the following describes the behavior of a ductile material? (2023)

A. It can be stretched into wires
B. It breaks without deformation
C. It is very hard
D. It cannot be shaped

Solution

Ductile materials can be stretched into wires without breaking.

Correct Answer: A — It can be stretched into wires

Q. Which of the following describes the behavior of a Zener diode?

A. Acts as a regular diode
B. Allows current to flow in both directions
C. Maintains a constant voltage
D. Has no breakdown voltage

Solution

A Zener diode is designed to maintain a constant voltage across it when reverse-biased, allowing it to regulate voltage.

Correct Answer: C — Maintains a constant voltage

Q. Which of the following describes the behavior of gases?

A. They have a definite shape
B. They have a definite volume
C. They expand to fill their container
D. They are incompressible

Solution

Gases have no definite shape or volume and will expand to fill the entire volume of their container.

Correct Answer: C — They expand to fill their container

Q. Which of the following describes the buoyant force acting on an object submerged in a fluid? (2020)

A. It is equal to the weight of the fluid displaced.
B. It is equal to the weight of the object.
C. It is always greater than the weight of the object.
D. It is independent of the fluid density.

Solution

According to Archimedes' principle, the buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.

Correct Answer: A — It is equal to the weight of the fluid displaced.

Q. Which of the following describes the concept of quantization in atomic physics? (2023)

A. Energy levels are continuous.
B. Energy levels are discrete.
C. Electrons can exist anywhere.
D. All of the above.

Solution

Quantization means that energy levels in an atom are discrete, not continuous.

Correct Answer: B — Energy levels are discrete.

Q. Which of the following describes the concept of work in physics? (2019)

A. Force applied over a distance
B. Energy stored in an object
C. Power multiplied by time
D. Mass times acceleration

Solution

Work is defined as the product of force applied over a distance in the direction of the force.

Correct Answer: A — Force applied over a distance

Q. Which of the following describes the Doppler effect?

A. Change in frequency due to motion
B. Change in amplitude due to distance
C. Change in speed due to temperature
D. Change in wavelength due to pressure

Solution

The Doppler effect refers to the change in frequency of a wave in relation to an observer moving relative to the wave source.

Correct Answer: A — Change in frequency due to motion

Q. Which of the following describes the emission spectrum of hydrogen? (2023)

A. Continuous spectrum
B. Line spectrum
C. Absorption spectrum
D. Black body spectrum

Solution

The emission spectrum of hydrogen is a line spectrum, consisting of discrete lines corresponding to specific wavelengths of light emitted by electrons transitioning between energy levels.

Correct Answer: B — Line spectrum

Q. Which of the following describes the end behavior of the graph of a cubic function?

A. Both ends rise.
B. Both ends fall.
C. One end rises and the other falls.
D. The graph is constant.

Solution

A cubic function has one end rising and the other falling, characteristic of odd-degree polynomials.

Correct Answer: C — One end rises and the other falls.

Q. Which of the following describes the end behavior of the polynomial P(x) = -2x^4 + 3x^3 - x + 5?

A. Both ends go up.
B. Both ends go down.
C. Left goes down, right goes up.
D. Left goes up, right goes down.

Solution

Since the leading coefficient is negative and the degree is even, both ends of the polynomial go down.

Correct Answer: B — Both ends go down.

Q. Which of the following describes the flow of an ideal fluid? (2022)

A. Incompressible and non-viscous
B. Viscous and compressible
C. Incompressible and viscous
D. Compressible and non-viscous

Solution

An ideal fluid is defined as being incompressible and non-viscous, meaning it has no internal friction.

Correct Answer: A — Incompressible and non-viscous

Q. Which of the following describes the graphical representation of the equation y = 3x + 1? (2023)

A. A horizontal line.
B. A vertical line.
C. A line with a slope of 3.
D. A line with a slope of -3.

Solution

The equation is in slope-intercept form, where the slope is 3, indicating the line rises steeply.

Correct Answer: C — A line with a slope of 3.

Q. Which of the following describes the motion of a damped oscillator mathematically?

A. x(t) = A cos(ωt)
B. x(t) = A e^(-bt) cos(ωt)
C. x(t) = A sin(ωt)
D. x(t) = A e^(bt) cos(ωt)

Solution

The motion of a damped oscillator is described by x(t) = A e^(-bt) cos(ωt), where b is the damping coefficient.

Correct Answer: B — x(t) = A e^(-bt) cos(ωt)

Q. Which of the following describes the motion of a damped oscillator?

A. Simple harmonic motion
B. Exponential decay
C. Linear motion
D. Circular motion

Solution

The motion of a damped oscillator is characterized by exponential decay of amplitude over time.

Correct Answer: B — Exponential decay

Q. Which of the following describes the motion of a system undergoing overdamping?

A. Returns to equilibrium position quickly
B. Oscillates with decreasing amplitude
C. Returns to equilibrium position slowly without oscillating
D. Oscillates indefinitely

Solution

In overdamping, the system returns to the equilibrium position slowly without oscillating.

Correct Answer: C — Returns to equilibrium position slowly without oscillating

Q. Which of the following describes the motion of an object in free fall? (2022)

A. Constant speed
B. Accelerated motion
C. Uniform motion
D. Cyclic motion

Solution

An object in free fall experiences accelerated motion due to the force of gravity.

Correct Answer: B — Accelerated motion

Q. Which of the following describes the polarization of light?

A. Light waves oscillate in all directions
B. Light waves oscillate in a single plane
C. Light waves oscillate in a circular motion
D. Light waves do not oscillate

Solution

Polarization of light refers to the phenomenon where light waves oscillate in a single plane.

Correct Answer: B — Light waves oscillate in a single plane

Q. Which of the following describes the property of a fluid that resists flow? (2020)

A. Viscosity
B. Density
C. Pressure
D. Surface Tension

Solution

Viscosity is the measure of a fluid's resistance to flow. Higher viscosity means the fluid flows less easily.

Correct Answer: A — Viscosity

Q. Which of the following describes the range of the function f(x) = x^2?

A. All real numbers.
B. All positive real numbers.
C. All non-negative real numbers.
D. All integers.

Solution

The range of f(x) = x^2 is all non-negative real numbers since the output of the function is always zero or positive.

Correct Answer: C — All non-negative real numbers.

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