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. What is the effect of increasing the carbon chain length on the boiling point of aldehydes?
A.
Decreases
B.
Increases
C.
Remains the same
D.
Varies randomly
Show solution
Solution
The boiling point of aldehydes increases with the increase in carbon chain length due to increased van der Waals forces.
Correct Answer:
B
— Increases
Learn More →
Q. What is the effect of increasing the concentration of a reactant in a first-order reaction?
A.
Rate increases linearly
B.
Rate decreases
C.
Rate remains constant
D.
Rate increases exponentially
Show solution
Solution
In a first-order reaction, increasing the concentration of a reactant results in a linear increase in the rate.
Correct Answer:
A
— Rate increases linearly
Learn More →
Q. What is the effect of increasing the concentration of a solute on the freezing point of a solution?
A.
Freezing point increases
B.
Freezing point decreases
C.
No effect
D.
Depends on the solute
Show solution
Solution
Increasing the concentration of a solute lowers the freezing point of a solution.
Correct Answer:
B
— Freezing point decreases
Learn More →
Q. What is the effect of increasing the concentration of reactants on the rate of a reaction?
A.
Rate decreases
B.
Rate increases
C.
Rate remains constant
D.
Rate becomes zero
Show solution
Solution
Increasing the concentration of reactants generally increases the rate of a reaction.
Correct Answer:
B
— Rate increases
Learn More →
Q. What is the effect of increasing the concentration of reactants on the rate of reaction? (2023)
A.
Increases the rate
B.
Decreases the rate
C.
No effect
D.
Depends on the reaction
Show solution
Solution
Increasing the concentration of reactants generally increases the rate of reaction due to more frequent collisions.
Correct Answer:
A
— Increases the rate
Learn More →
Q. What is the effect of increasing the cross-sectional area of a conductor on its resistance?
A.
Increases resistance
B.
Decreases resistance
C.
No effect
D.
Depends on the material
Show solution
Solution
Increasing the cross-sectional area decreases the resistance, as R = ρ * (L / A).
Correct Answer:
B
— Decreases resistance
Learn More →
Q. What is the effect of increasing the current in a coil on the magnetic field produced? (2022)
A.
Increases the magnetic field
B.
Decreases the magnetic field
C.
No effect
D.
Reverses the magnetic field
Show solution
Solution
Increasing the current in a coil increases the magnetic field produced by the coil.
Correct Answer:
A
— Increases the magnetic field
Learn More →
Q. What is the effect of increasing the current in a coil on the magnetic field strength?
A.
Increases
B.
Decreases
C.
No effect
D.
Depends on the coil material
Show solution
Solution
Increasing the current in a coil increases the magnetic field strength, as the magnetic field is directly proportional to the current.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the current in a solenoid on its magnetic field strength? (2021)
A.
Increases
B.
Decreases
C.
No effect
D.
Reverses direction
Show solution
Solution
Increasing the current in a solenoid increases its magnetic field strength, as the magnetic field is directly proportional to the current.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field inside it?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
The magnetic field inside a solenoid is directly proportional to the current flowing through it. Therefore, increasing the current increases the magnetic field strength.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field strength?
A.
Decreases the magnetic field strength
B.
Increases the magnetic field strength
C.
Has no effect
D.
Reverses the magnetic field direction
Show solution
Solution
Increasing the current in a solenoid increases the magnetic field strength, as B is directly proportional to I.
Correct Answer:
B
— Increases the magnetic field strength
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field strength inside it?
A.
Increases the magnetic field strength
B.
Decreases the magnetic field strength
C.
No effect on the magnetic field strength
D.
Reverses the direction of the magnetic field
Show solution
Solution
According to Ampere's Law, increasing the current in a solenoid increases the magnetic field strength inside it.
Correct Answer:
A
— Increases the magnetic field strength
Learn More →
Q. What is the effect of increasing the current in a wire on the magnetic field around it?
A.
Increases the magnetic field
B.
Decreases the magnetic field
C.
No effect on the magnetic field
D.
Reverses the direction of the magnetic field
Show solution
Solution
Increasing the current in a wire increases the magnetic field around it, as per the Biot-Savart Law.
Correct Answer:
A
— Increases the magnetic field
Learn More →
Q. What is the effect of increasing the curvature of a lens on its focal length?
A.
Focal length increases
B.
Focal length decreases
C.
Focal length remains the same
D.
Focal length becomes zero
Show solution
Solution
Increasing the curvature of a lens decreases its focal length.
Correct Answer:
B
— Focal length decreases
Learn More →
Q. What is the effect of increasing the damping coefficient on the amplitude of oscillation in a damped oscillator?
A.
Increases amplitude
B.
Decreases amplitude
C.
No effect
D.
Doubles amplitude
Show solution
Solution
Increasing the damping coefficient decreases the amplitude of oscillation in a damped oscillator.
Correct Answer:
B
— Decreases amplitude
Learn More →
Q. What is the effect of increasing the diameter of the potentiometer wire on its resistance?
A.
Resistance increases
B.
Resistance decreases
C.
Resistance remains the same
D.
Resistance becomes zero
Show solution
Solution
Increasing the diameter of the potentiometer wire decreases its resistance, as resistance is inversely proportional to the cross-sectional area of the wire.
Correct Answer:
B
— Resistance decreases
Learn More →
Q. What is the effect of increasing the distance between the plates of a capacitor on its capacitance? (2022)
A.
Increases capacitance
B.
Decreases capacitance
C.
No effect
D.
Doubles capacitance
Show solution
Solution
Increasing the distance between the plates of a capacitor decreases its capacitance, as capacitance is inversely proportional to the distance.
Correct Answer:
B
— Decreases capacitance
Learn More →
Q. What is the effect of increasing the distance between the slits in a double-slit experiment on the interference pattern?
A.
Fringe width increases
B.
Fringe width decreases
C.
Fringe intensity increases
D.
Fringe intensity decreases
Show solution
Solution
Increasing the distance between the slits decreases the fringe width, making the fringes closer together.
Correct Answer:
B
— Fringe width decreases
Learn More →
Q. What is the effect of increasing the distance between the slits in a double-slit experiment on the fringe separation?
A.
Increases fringe separation
B.
Decreases fringe separation
C.
No effect
D.
Fringe separation becomes zero
Show solution
Solution
Increasing the distance between the slits decreases the fringe separation as fringe width is inversely proportional to the slit separation.
Correct Answer:
B
— Decreases fringe separation
Learn More →
Q. What is the effect of increasing the distance from a current-carrying wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
According to the Biot-Savart Law, the magnetic field strength decreases with increasing distance from the current-carrying wire.
Correct Answer:
B
— It decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight conductor on the magnetic field strength?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
According to Biot-Savart Law, the magnetic field strength decreases with increasing distance from the conductor.
Correct Answer:
B
— Decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight current-carrying wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
According to the Biot-Savart Law, the magnetic field strength decreases with increasing distance from the wire.
Correct Answer:
B
— It decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
The magnetic field strength decreases with increasing distance from a long straight wire, following the inverse relationship with distance.
Correct Answer:
B
— It decreases
Learn More →
Q. What is the effect of increasing the distance from the pivot point on the torque produced by a force?
A.
Torque increases
B.
Torque decreases
C.
Torque remains the same
D.
Torque becomes zero
Show solution
Solution
Increasing the distance from the pivot point increases the torque produced by the force.
Correct Answer:
A
— Torque increases
Learn More →
Q. What is the effect of increasing the frequency of AC on the inductive reactance? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
Inductive reactance increases with the frequency of AC.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the frequency of an AC source on the inductive reactance of a circuit?
A.
It decreases
B.
It remains the same
C.
It increases
D.
It becomes zero
Show solution
Solution
Inductive reactance (XL) is given by XL = 2πfL, so increasing the frequency (f) increases the inductive reactance.
Correct Answer:
C
— It increases
Learn More →
Q. What is the effect of increasing the frequency of an AC source on the inductive reactance? (2023)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
Increasing the frequency of an AC source increases the inductive reactance.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the frequency of incident light on the photoelectric current?
A.
Increases indefinitely
B.
Decreases
C.
Remains constant
D.
Increases until a threshold frequency is reached
Show solution
Solution
The photoelectric current increases with frequency until the threshold frequency is reached, after which it depends on intensity.
Correct Answer:
D
— Increases until a threshold frequency is reached
Learn More →
Q. What is the effect of increasing the frequency of the AC supply on the inductive reactance? (2020)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
Inductive reactance increases with frequency, as X_L = 2πfL.
Correct Answer:
A
— Increases
Learn More →
Q. What is the effect of increasing the frequency of the alternating current in an inductor?
A.
Inductive reactance decreases
B.
Inductive reactance increases
C.
Inductive reactance remains constant
D.
Inductive reactance becomes zero
Show solution
Solution
Inductive reactance (XL) is given by the formula XL = 2πfL, where f is the frequency. Thus, increasing frequency increases inductive reactance.
Correct Answer:
B
— Inductive reactance increases
Learn More →
Showing 19951 to 19980 of 31669 (1056 Pages)
