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!

Q. For a composite body made of two solid cylinders of mass M1 and M2 and radius R, what is the total moment of inertia about the same axis?
  • A. I1 + I2
  • B. I1 - I2
  • C. I1 * I2
  • D. I1 / I2
Q. For a convex lens, if the object is at infinity, the image will be formed at: (2020)
  • A. At the focus
  • B. At the center of curvature
  • C. At infinity
  • D. At the optical center
Q. For a convex lens, if the object is at the focus, what type of image is formed? (2020)
  • A. Real and inverted
  • B. Virtual and erect
  • C. No image
  • D. Real and erect
Q. For a current-carrying loop, what is the magnetic field at the center if the radius is halved?
  • A. It remains the same
  • B. It doubles
  • C. It quadruples
  • D. It halves
Q. For a cylindrical conductor of radius R carrying current I, what is the magnetic field at a point outside the cylinder?
  • A. 0
  • B. μ₀I/2πr
  • C. μ₀I/4πr
  • D. μ₀I/πr
Q. For a cylindrical conductor of radius R carrying current I, what is the magnetic field at a point outside the conductor?
  • A. 0
  • B. μ₀I/2πR
  • C. μ₀I/4πR
  • D. μ₀I/πR
Q. For a damped oscillator, what is the relationship between the natural frequency and the damped frequency?
  • A. Damped frequency is greater
  • B. Damped frequency is equal
  • C. Damped frequency is less
  • D. No relationship
Q. For a diffraction grating with 500 lines per mm, what is the angle of the first order maximum for light of wavelength 600 nm?
  • A. 30 degrees
  • B. 45 degrees
  • C. 60 degrees
  • D. 15 degrees
Q. For a diffraction pattern produced by a single slit, how does the width of the central maximum change if the slit width is halved?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. For a diffraction pattern produced by a single slit, how does the width of the central maximum compare to the other maxima?
  • A. Wider than all other maxima
  • B. Narrower than all other maxima
  • C. Equal to all other maxima
  • D. None of the above
Q. For a first-order reaction, if the half-life is 10 minutes, what will be the half-life if the initial concentration is doubled?
  • A. 10 minutes
  • B. 5 minutes
  • C. 20 minutes
  • D. 15 minutes
Q. For a first-order reaction, the half-life is independent of the initial concentration. What is the expression for half-life?
  • A. t1/2 = 0.693/k
  • B. t1/2 = k/0.693
  • C. t1/2 = 1/k
  • D. t1/2 = k/2
Q. For a first-order reaction, the half-life is independent of which of the following?
  • A. Initial concentration
  • B. Rate constant
  • C. Temperature
  • D. All of the above
Q. For a gas at 300 K, if the RMS speed is 500 m/s, what will be the RMS speed at 600 K?
  • A. 500 m/s
  • B. 707 m/s
  • C. 1000 m/s
  • D. 250 m/s
Q. For a gas at 300 K, what is the RMS speed if the molar mass is 0.028 kg/mol?
  • A. 500 m/s
  • B. 600 m/s
  • C. 700 m/s
  • D. 800 m/s
Q. For a gas at a certain temperature, if the molar mass is halved, what happens to the RMS speed?
  • A. Increases by a factor of 2
  • B. Increases by a factor of sqrt(2)
  • C. Decreases by a factor of 2
  • D. Remains the same
Q. For a gas at a constant temperature, if the molar mass is halved, what happens to the RMS speed?
  • A. Increases by a factor of sqrt(2)
  • B. Increases by a factor of 2
  • C. Decreases by a factor of 2
  • D. Remains the same
Q. For a gas at constant pressure, if the volume is doubled, what happens to the temperature?
  • A. It remains the same
  • B. It doubles
  • C. It halves
  • D. It triples
Q. For a gas at constant pressure, if the volume is halved, what happens to the temperature?
  • A. It remains the same
  • B. It doubles
  • C. It is halved
  • D. It is quartered
Q. For a gas mixture, how is the RMS speed calculated?
  • A. Using the average molar mass of the mixture
  • B. Using the molar mass of the heaviest gas
  • C. Using the molar mass of the lightest gas
  • D. Using the molar mass of the most abundant gas
Q. For a gas with a molar mass of 32 g/mol at 273 K, what is the RMS speed?
  • A. 300 m/s
  • B. 400 m/s
  • C. 500 m/s
  • D. 600 m/s
Q. For a gas with a molar mass of 32 g/mol at a temperature of 300 K, what is the RMS speed?
  • A. 273 m/s
  • B. 400 m/s
  • C. 500 m/s
  • D. 600 m/s
Q. For a gas with molar mass M at temperature T, what is the relationship between RMS speed and molar mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the relationship between RMS speed and molar mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the relationship between RMS speed and molecular mass?
  • A. v_rms is directly proportional to M
  • B. v_rms is inversely proportional to M
  • C. v_rms is independent of M
  • D. v_rms is proportional to M^2
Q. For a gas with molar mass M, what is the RMS speed at 300 K?
  • A. sqrt(3RT/M)
  • B. sqrt(2RT/M)
  • C. RT/M
  • D. 3RT/M
Q. For a given mass, which of the following configurations will have the smallest moment of inertia?
  • A. All mass at the center
  • B. Mass distributed evenly
  • C. Mass at the edge
  • D. Mass concentrated at one end
Q. For a hollow sphere of mass M and radius R, what is the moment of inertia about an axis through its center?
  • A. 2/5 MR^2
  • B. 3/5 MR^2
  • C. 2/3 MR^2
  • D. MR^2
Q. For a monatomic ideal gas, the ratio of specific heats (γ) is approximately: (2019)
  • A. 1.5
  • B. 1.67
  • C. 1.4
  • D. 2
Q. For a monoatomic ideal gas, the RMS speed is given by which of the following expressions?
  • A. sqrt((3kT)/m)
  • B. sqrt((3RT)/M)
  • C. Both of the above
  • D. None of the above
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