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. According to Ampere's Law, what is the line integral of the magnetic field around a closed loop equal to?

A. 0
B. μ₀ times the total current through the loop
C. μ₀ times the total charge
D. None of the above

Solution

Ampere's Law states that the line integral of B around a closed loop is μ₀ times the total current through the loop.

Correct Answer: B — μ₀ times the total current through the loop

Q. According to Ampere's Law, what is the magnetic field inside a long straight conductor carrying current I?

A. Zero
B. μ₀I/2πr
C. μ₀I/4πr
D. μ₀I/πr

Solution

Inside a long straight conductor, the magnetic field is zero because the contributions from all parts of the conductor cancel out.

Correct Answer: A — Zero

Q. According to Bernoulli's equation, an increase in the speed of a fluid occurs simultaneously with a: (2020)

A. Increase in pressure
B. Decrease in pressure
C. Increase in temperature
D. Decrease in density

Solution

Bernoulli's equation states that an increase in the speed of a fluid results in a decrease in pressure.

Correct Answer: B — Decrease in pressure

Q. According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a: (2020)

A. Increase in pressure
B. Decrease in pressure
C. Increase in temperature
D. Decrease in density

Solution

Bernoulli's principle states that an increase in the speed of a fluid results in a decrease in pressure.

Correct Answer: B — Decrease in pressure

Q. According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a decrease in:

A. Pressure
B. Temperature
C. Density
D. Viscosity

Solution

Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

Correct Answer: A — Pressure

Q. According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a decrease in which of the following? (2019)

A. Pressure
B. Density
C. Viscosity
D. Temperature

Solution

Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

Correct Answer: A — Pressure

Q. According to Bernoulli's principle, what happens to the pressure of a fluid when its velocity increases?

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

Solution

Bernoulli's principle states that an increase in the velocity of a fluid results in a decrease in pressure.

Correct Answer: B — Pressure decreases

Q. According to Boyle's law, if the volume of a gas is doubled at constant temperature, what happens to the pressure?

A. It doubles
B. It halves
C. It remains constant
D. It quadruples

Solution

Boyle's law states that pressure is inversely proportional to volume at constant temperature, so if the volume is doubled, the pressure halves.

Correct Answer: B — It halves

Q. According to Boyle's law, if the volume of a gas is doubled, what happens to its pressure?

A. It doubles
B. It halves
C. It remains constant
D. It quadruples

Solution

Boyle's law states that pressure is inversely proportional to volume at constant temperature, so if volume is doubled, pressure is halved.

Correct Answer: B — It halves

Q. According to Charles's Law, how does the volume of a gas change with temperature at constant pressure?

A. V ∝ T
B. V ∝ 1/T
C. V + T = constant
D. VT = constant

Solution

Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure, expressed as V ∝ T.

Correct Answer: A — V ∝ T

Q. According to Charles's Law, what happens to the volume of a gas when the temperature increases at constant pressure?

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

Solution

Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure, meaning that as temperature increases, volume also increases.

Correct Answer: C — Volume increases

Q. According to Faraday's law of electromagnetic induction, the induced EMF in a circuit is directly proportional to the rate of change of which of the following? (2020)

A. Magnetic field strength
B. Magnetic flux
C. Electric current
D. Resistance

Solution

Faraday's law states that the induced EMF is proportional to the rate of change of magnetic flux through the circuit.

Correct Answer: B — Magnetic flux

Q. According to Faraday's law of electromagnetic induction, the induced EMF in a circuit is proportional to the rate of change of which of the following? (2020)

A. Magnetic field strength
B. Magnetic flux
C. Electric field strength
D. Current

Solution

Faraday's law states that the induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.

Correct Answer: B — Magnetic flux

Q. According to Faraday's law, the induced EMF in a circuit is directly proportional to what?

A. The rate of change of magnetic flux
B. The strength of the magnetic field
C. The resistance of the circuit
D. The length of the conductor

Solution

Faraday's law states that the induced EMF is directly proportional to the rate of change of magnetic flux through the circuit.

Correct Answer: A — The rate of change of magnetic flux

Q. According to Faraday's law, the induced EMF in a circuit is proportional to what?

A. The rate of change of magnetic flux
B. The strength of the magnetic field
C. The resistance of the circuit
D. The length of the conductor

Solution

Faraday's law states that the induced EMF is directly proportional to the rate of change of magnetic flux through the circuit.

Correct Answer: A — The rate of change of magnetic flux

Q. According to Graham's law of effusion, the rate of effusion of a gas is inversely proportional to what?

A. Molar mass
B. Temperature
C. Pressure
D. Volume

Solution

Graham's law states that the rate of effusion is inversely proportional to the square root of the molar mass of the gas.

Correct Answer: A — Molar mass

Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 4A, what is the total current leaving the junction?

A. 1A
B. 3A
C. 5A
D. 9A

Solution

According to Kirchhoff's Current Law, the total current entering a junction equals the total current leaving it. Total entering = 2A + 3A + 4A = 9A.

Correct Answer: D — 9A

Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 4A, what is the current leaving the junction?

A. 1A
B. 3A
C. 5A
D. 9A

Solution

According to Kirchhoff's Current Law, the sum of currents entering a junction equals the sum of currents leaving. Therefore, I_out = 2A + 3A + 4A = 9A.

Correct Answer: D — 9A

Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 1A, what is the total current leaving the junction?

A. 6A
B. 5A
C. 4A
D. 3A

Solution

According to Kirchhoff's Current Law, total current entering = total current leaving. 2A + 3A + 1A = 6A.

Correct Answer: B — 5A

Q. According to Kirchhoff's Current Law, if three currents entering a junction are 2A, 3A, and 5A, what is the total current leaving the junction?

A. 10A
B. 5A
C. 3A
D. 2A

Solution

According to Kirchhoff's Current Law, the total current entering a junction equals the total current leaving it. Therefore, total current leaving = 2A + 3A + 5A = 10A.

Correct Answer: A — 10A

Q. According to Kirchhoff's Voltage Law, the sum of the potential differences around any closed loop in a circuit is equal to what?

A. Zero
B. The total current
C. The total resistance
D. The total power

Solution

Kirchhoff's Voltage Law states that the sum of the electromotive forces and potential differences in any closed loop is zero.

Correct Answer: A — Zero

Q. According to Kirchhoff's Voltage Law, the sum of the potential differences around any closed loop in a circuit must equal what?

A. Zero
B. The total current
C. The total resistance
D. The total power

Solution

Kirchhoff's Voltage Law states that the sum of the electrical potential differences (voltage) around any closed circuit is zero.

Correct Answer: A — Zero

Q. According to Newton's third law, if object A exerts a force on object B, what does object B do?

A. Exerts a greater force on A
B. Exerts an equal and opposite force on A
C. Exerts no force
D. Exerts a lesser force on A

Solution

Newton's third law states that for every action, there is an equal and opposite reaction.

Correct Answer: B — Exerts an equal and opposite force on A

Q. According to the bar graph comparing the heights of five plants after one month, which plant was the tallest?

A. Plant A
B. Plant B
C. Plant C
D. Plant D

Solution

Plant D was the tallest at 15 cm after one month as per the bar graph.

Correct Answer: D — Plant D

Q. According to the bar graph comparing the heights of five plants over a month, which plant grew the most?

A. Plant A
B. Plant B
C. Plant C
D. Plant D

Solution

Plant C grew the most, reaching a height of 40 cm.

Correct Answer: C — Plant C

Q. According to the bar graph comparing the sales of two products (X and Y) over five months, what was the sales figure for Product X in April?

A. 300
B. 350
C. 400
D. 450

Solution

Product X had sales of 400 units in April as per the bar graph.

Correct Answer: C — 400

Q. According to the bar graph displaying the number of products sold by four stores (P, Q, R, S), which store sold the most products?

A. Store P
B. Store Q
C. Store R
D. Store S

Solution

Store S sold the most products with a total of 300 units.

Correct Answer: D — Store S

Q. According to the bar graph, what was the percentage increase in sales from 2021 to 2022 for oranges? (2021)

A. 10%
B. 20%
C. 30%
D. 40%

Solution

The bar graph indicates a 20% increase in sales for oranges from 2021 to 2022.

Correct Answer: B — 20%

Q. According to the bar graph, what was the percentage increase in sales from 2021 to 2022 for Bananas? (2021)

A. 10%
B. 20%
C. 30%
D. 40%

Solution

The bar graph indicates a 20% increase in sales for Bananas from 2021 to 2022.

Correct Answer: B — 20%

Q. According to the bar graph, what was the percentage increase in sales from Q1 to Q2 for Product A?

A. 10%
B. 20%
C. 30%
D. 40%

Solution

The bar graph indicates a 30% increase in sales from Q1 to Q2 for Product A.

Correct Answer: C — 30%

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