Major Competitive Exams

My Learning Cart

?

Welcome to

Soulshift

Categories

Account

Major Competitive Exams

Download Q&A

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!

Civil Services Defence Exams Engineering & Architecture Admissions Government Jobs Management Admissions Undergraduate

Q. What is the effect of increasing the number of moles of a gas on its pressure at constant volume and temperature?

A. Pressure decreases
B. Pressure increases
C. Pressure remains constant
D. Pressure becomes zero

Solution

According to the ideal gas law, increasing the number of moles (n) of a gas while keeping volume (V) and temperature (T) constant will increase the pressure (P).

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of moles of gas in a closed container at constant temperature and volume?

A. Pressure decreases
B. Pressure increases
C. Volume decreases
D. Temperature increases

Solution

According to Avogadro's Law, increasing the number of moles of gas increases the pressure if temperature and volume are constant.

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of moles of gas in a closed container at constant temperature?

A. Pressure decreases
B. Pressure increases
C. Volume decreases
D. Temperature decreases

Solution

According to Avogadro's Law, increasing the number of moles of gas increases the pressure if the volume is constant.

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of moles of gas on pressure at constant volume and temperature?

A. Pressure decreases
B. Pressure increases
C. Pressure remains constant
D. Pressure becomes zero

Solution

According to the ideal gas law, increasing the number of moles of gas at constant volume and temperature will increase the pressure.

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of moles of gas on the pressure at constant volume and temperature?

A. Pressure decreases
B. Pressure increases
C. Pressure remains constant
D. Volume increases

Solution

According to Avogadro's Law, increasing the number of moles of gas at constant volume and temperature will increase the pressure.

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of moles of gas on the pressure, assuming volume and temperature are constant?

A. Pressure decreases
B. Pressure increases
C. Pressure remains constant
D. Pressure becomes zero

Solution

According to Avogadro's Law, increasing the number of moles of gas increases the pressure if volume and temperature are constant.

Correct Answer: B — Pressure increases

Q. What is the effect of increasing the number of slits in a diffraction grating on the sharpness of the maxima?

A. Maxima become sharper
B. Maxima become broader
C. No effect on sharpness
D. Maxima disappear

Solution

Increasing the number of slits in a diffraction grating results in sharper maxima due to increased constructive interference.

Correct Answer: A — Maxima become sharper

Q. What is the effect of increasing the number of turns in a coil on its inductance? (2023)

A. Increases inductance
B. Decreases inductance
C. No effect
D. Depends on the material

Solution

Increasing the number of turns in a coil increases its inductance.

Correct Answer: A — Increases inductance

Q. What is the effect of increasing the number of turns in a coil on the induced EMF?

A. It increases the induced EMF
B. It decreases the induced EMF
C. It has no effect
D. It makes the EMF negative

Solution

Increasing the number of turns (N) in a coil increases the induced EMF, as EMF = -N * (dΦ/dt).

Correct Answer: A — It increases the induced EMF

Q. What is the effect of increasing the number of turns in a coil on the induced EMF when the magnetic field changes?

A. Induced EMF decreases
B. Induced EMF remains the same
C. Induced EMF increases
D. Induced EMF becomes zero

Solution

According to Faraday's law of electromagnetic induction, the induced EMF is proportional to the rate of change of magnetic flux and the number of turns in the coil. Increasing the number of turns increases the induced EMF.

Correct Answer: C — Induced EMF increases

Q. What is the effect of increasing the number of turns in a coil on the induced EMF when the magnetic flux changes?

A. It increases the induced EMF
B. It decreases the induced EMF
C. It has no effect
D. It makes the induced EMF zero

Solution

According to Faraday's law, the induced EMF is directly proportional to the number of turns in the coil. Therefore, increasing the number of turns increases the induced EMF.

Correct Answer: A — It increases the induced EMF

Q. What is the effect of increasing the number of turns in a coil on the magnetic field produced by it?

A. It decreases the magnetic field
B. It has no effect
C. It increases the magnetic field
D. It reverses the magnetic field direction

Solution

Increasing the number of turns in a coil increases the magnetic field produced, as the field is proportional to the number of turns.

Correct Answer: C — It increases the magnetic field

Q. What is the effect of increasing the number of turns in a coil on the magnetic field produced?

A. Increases
B. Decreases
C. No effect
D. Reverses

Solution

Increasing the number of turns increases the magnetic field strength.

Correct Answer: A — Increases

Q. What is the effect of increasing the number of turns in a coil on the magnetic field strength produced by it? (2022)

A. Increases the field strength
B. Decreases the field strength
C. No effect
D. Reverses the field direction

Solution

Increasing the number of turns in a coil increases the magnetic field strength produced by it, as the field strength is directly proportional to the number of turns.

Correct Answer: A — Increases the field strength

Q. What is the effect of increasing the number of turns in a solenoid on its magnetic field strength? (2022)

A. Decreases the field strength
B. Increases the field strength
C. No effect
D. Reverses the field direction

Solution

Increasing the number of turns (n) in a solenoid increases the magnetic field strength, as B = μ₀nI.

Correct Answer: B — Increases the field strength

Q. What is the effect of increasing the number of turns in a solenoid on the magnetic field inside it?

A. Magnetic field decreases
B. Magnetic field remains constant
C. Magnetic field increases
D. Magnetic field becomes zero

Solution

The magnetic field inside a solenoid is directly proportional to the number of turns per unit length. Increasing the number of turns increases the magnetic field strength.

Correct Answer: C — Magnetic field increases

Q. What is the effect of increasing the object distance on the size of the image formed by a convex lens?

A. Image size increases
B. Image size decreases
C. Image size remains constant
D. Image size becomes zero

Solution

As the object distance increases, the size of the image formed by a convex lens increases until it reaches a maximum.

Correct Answer: A — Image size increases

Q. What is the effect of increasing the permittivity of the medium on the electric field due to a point charge?

A. Electric field increases
B. Electric field decreases
C. Electric field remains the same
D. Electric field becomes zero

Solution

Increasing the permittivity of the medium decreases the electric field due to a point charge, as E = Q/(4πε₀r²).

Correct Answer: B — Electric field decreases

Q. What is the effect of increasing the plate area of a capacitor on its capacitance?

A. Capacitance increases
B. Capacitance decreases
C. Capacitance remains the same
D. Capacitance becomes zero

Solution

Increasing the plate area A of a capacitor increases its capacitance, as C is directly proportional to A.

Correct Answer: A — Capacitance increases

Q. What is the effect of increasing the plate area of a parallel plate capacitor on its capacitance? (2022)

A. Increases capacitance
B. Decreases capacitance
C. No effect
D. Capacitance becomes zero

Solution

Increasing the plate area A of a parallel plate capacitor increases its capacitance, as C = ε₀A/d.

Correct Answer: A — Increases capacitance

Q. What is the effect of increasing the plate area of a parallel plate capacitor?

A. Capacitance decreases
B. Capacitance increases
C. Capacitance remains the same
D. Capacitance becomes zero

Solution

Increasing the plate area A of a parallel plate capacitor increases its capacitance, as C = ε₀ * A / d.

Correct Answer: B — Capacitance increases

Q. What is the effect of increasing the pressure of a gas at constant temperature on its RMS speed?

A. Increases RMS speed
B. Decreases RMS speed
C. No effect on RMS speed
D. Depends on the gas

Solution

At constant temperature, increasing pressure does not affect the RMS speed, as it is dependent on temperature and molar mass.

Correct Answer: C — No effect on RMS speed

Q. What is the effect of increasing the pressure of a gas at constant volume on its RMS speed?

A. Increases RMS speed
B. Decreases RMS speed
C. No effect on RMS speed
D. Depends on the gas

Solution

At constant volume, increasing pressure increases the temperature of the gas, which in turn increases the RMS speed.

Correct Answer: A — Increases RMS speed

Q. What is the effect of increasing the pressure on the equilibrium of the reaction: 2N2(g) + 3H2(g) ⇌ 2NH3(g)?

A. Shifts to the left
B. Shifts to the right
C. No effect
D. Increases the rate of reaction

Solution

Increasing the pressure will shift the equilibrium to the right, favoring the formation of NH3, as there are fewer moles of gas on the product side.

Correct Answer: B — Shifts to the right

Q. What is the effect of increasing the pressure on the rate of a reaction involving gaseous reactants?

A. Rate decreases
B. Rate increases
C. No effect
D. Depends on the reaction

Solution

Increasing the pressure increases the concentration of gaseous reactants, which generally increases the rate of reaction.

Correct Answer: B — Rate increases

Q. What is the effect of increasing the radius of a circular loop carrying current on the magnetic field at its center?

A. It increases the magnetic field
B. It decreases the magnetic field
C. It has no effect
D. It reverses the direction of the magnetic field

Solution

The magnetic field at the center of a circular loop is inversely proportional to the radius; thus, increasing the radius decreases the magnetic field.

Correct Answer: B — It decreases the magnetic field

Q. What is the effect of increasing the radius of a circular loop on the magnetic field at its center?

A. Increases
B. Decreases
C. Remains the same
D. Becomes zero

Solution

The magnetic field at the center of a circular loop decreases as the radius increases.

Correct Answer: B — Decreases

Q. What is the effect of increasing the radius of a spherical Gaussian surface enclosing a fixed charge?

A. Electric field increases.
B. Electric field decreases.
C. Electric field remains constant.
D. Electric field becomes zero.

Solution

The electric field due to a point charge decreases with distance, but the total flux remains constant as the charge is fixed.

Correct Answer: C — Electric field remains constant.

Q. What is the effect of increasing the resistance in a circuit while keeping the voltage constant? (2019)

A. Current increases
B. Current decreases
C. Current remains the same
D. Voltage increases

Solution

According to Ohm's law, if resistance increases while voltage remains constant, current decreases.

Correct Answer: B — Current decreases

Q. What is the effect of increasing the resistance in a series AC circuit?

A. Increases current
B. Decreases current
C. No effect
D. Increases voltage

Solution

Increasing the resistance in a series AC circuit decreases the current.

Correct Answer: B — Decreases current

Showing 20011 to 20040 of 31669 (1056 Pages)

Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely