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 work done when 1 mole of an ideal gas expands isothermally from 10 L to 20 L at a temperature of 300 K? (2020)
A.
1.5 kJ
B.
2.5 kJ
C.
3.5 kJ
D.
4.5 kJ
Show solution
Solution
Work done (W) = nRT ln(Vf/Vi) = 1 mol * 8.314 J/(mol K) * 300 K * ln(20/10) = 2.5 kJ.
Correct Answer:
B
— 2.5 kJ
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Q. What is the work done when a 50 N force moves an object 3 m in the direction of the force?
A.
150 J
B.
100 J
C.
50 J
D.
200 J
Show solution
Solution
Work done (W) = F × d = 50 N × 3 m = 150 J.
Correct Answer:
A
— 150 J
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Q. What is the work done when a force of 10 N moves an object 5 m in the direction of the force? (2016)
A.
50 J
B.
25 J
C.
10 J
D.
5 J
Show solution
Solution
Work done (W) = Force × Distance = 10 N × 5 m = 50 J.
Correct Answer:
A
— 50 J
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Q. What is the work done when a force of 15 N moves an object 3 m at an angle of 0 degrees to the direction of motion?
A.
45 J
B.
30 J
C.
60 J
D.
75 J
Show solution
Solution
Work = Force * Distance * cos(θ) = 15 N * 3 m * cos(0°) = 45 J.
Correct Answer:
A
— 45 J
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Q. What is the work done when a force of 15 N moves an object 3 m at an angle of 60° to the direction of the force?
A.
22.5 J
B.
30 J
C.
36.5 J
D.
45 J
Show solution
Solution
W = F × d × cos(θ) = 15 N × 3 m × cos(60°) = 15 × 3 × 0.5 = 22.5 J.
Correct Answer:
A
— 22.5 J
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Q. What is the work done when a force of 15 N moves an object 3 m in the direction of the force? (2021)
A.
45 J
B.
30 J
C.
15 J
D.
60 J
Show solution
Solution
Work Done (W) = Force * Distance = 15 N * 3 m = 45 J.
Correct Answer:
A
— 45 J
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Q. What is the work done when a force of 15 N moves an object 4 m in the direction of the force?
A.
60 J
B.
30 J
C.
45 J
D.
75 J
Show solution
Solution
Work done = Force × Distance = 15 N × 4 m = 60 J
Correct Answer:
A
— 60 J
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Q. What is the work done when a force of 25 N moves an object 4 m at an angle of 60° to the direction of the force? (2019)
A.
50 J
B.
100 J
C.
75 J
D.
25 J
Show solution
Solution
Work done = Fd cos(θ) = 25 N × 4 m × cos(60°) = 25 N × 4 m × 0.5 = 50 J
Correct Answer:
C
— 75 J
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Q. What is the work done when a force of 25 N moves an object 8 m in the direction of the force? (2023)
A.
200 J
B.
150 J
C.
300 J
D.
100 J
Show solution
Solution
Work done (W) = F × d = 25 N × 8 m = 200 J.
Correct Answer:
A
— 200 J
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Q. What is the work done when a force of 5 N moves an object 3 m in the direction of the force?
A.
15 J
B.
5 J
C.
10 J
D.
20 J
Show solution
Solution
Work done (W) = Force (F) × Distance (d) = 5 N × 3 m = 15 J.
Correct Answer:
A
— 15 J
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Q. What is the work function of a metal if the threshold frequency is 5 x 10^14 Hz?
A.
3.1 eV
B.
2.5 eV
C.
4.1 eV
D.
1.6 eV
Show solution
Solution
The work function φ can be calculated using φ = hf, where h = 6.63 x 10^-34 J.s and f = 5 x 10^14 Hz, giving φ ≈ 3.1 eV.
Correct Answer:
A
— 3.1 eV
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Q. What is the work function of a metal?
A.
The energy required to ionize an atom
B.
The energy required to remove an electron from the surface of a metal
C.
The energy of the emitted electrons
D.
The energy of the incident photons
Show solution
Solution
The work function is the minimum energy required to remove an electron from the surface of a metal.
Correct Answer:
B
— The energy required to remove an electron from the surface of a metal
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Q. What is the work-energy theorem?
A.
Work done is equal to change in momentum
B.
Work done is equal to change in kinetic energy
C.
Work done is equal to change in potential energy
D.
Work done is equal to change in total energy
Show solution
Solution
The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.
Correct Answer:
B
— Work done is equal to change in kinetic energy
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Q. What is the x-intercept of the line 2x + 3y = 6? (2019)
Show solution
Solution
To find the x-intercept, set y = 0. Thus, 2x = 6, giving x = 3.
Correct Answer:
A
— 2
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Q. What is the x-intercept of the line 3x + 4y - 12 = 0?
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Solution
To find the x-intercept, set y = 0. Thus, 3x - 12 = 0 gives x = 4.
Correct Answer:
B
— 3
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Q. What is the x-intercept of the line 5x + 2y = 10?
Show solution
Solution
Setting y = 0 in the equation gives 5x = 10, thus x = 2. The x-intercept is 2.
Correct Answer:
B
— 5
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Q. What is the x-intercept of the line 5x - 2y + 10 = 0?
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Solution
Setting y = 0 in the equation gives 5x + 10 = 0, thus x = -2.
Correct Answer:
B
— 2
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Q. What is the x-intercept of the line 6x - 2y = 12?
Show solution
Solution
Setting y = 0 in the equation gives 6x = 12, thus x = 2. The x-intercept is 2.
Correct Answer:
B
— 3
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Q. What is the x-intercept of the line given by the equation 4x + 5y - 20 = 0?
Show solution
Solution
To find the x-intercept, set y = 0. Thus, 4x = 20, giving x = 5.
Correct Answer:
A
— 4
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Q. What is the x-intercept of the line represented by the equation 5x + 2y = 10?
Show solution
Solution
To find the x-intercept, set y = 0. The equation becomes 5x = 10, thus x = 2.
Correct Answer:
C
— 5
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Q. What is the y-intercept of the line 2x - 3y + 6 = 0? (2023)
Show solution
Solution
Rearranging gives y = (2/3)x + 2; y-intercept = 2
Correct Answer:
A
— 2
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Q. What is the y-intercept of the line 2x - 3y = 6? (2022)
Show solution
Solution
To find y-intercept, set x = 0: 2(0) - 3y = 6 => -3y = 6 => y = -2
Correct Answer:
B
— 3
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Q. What is the y-intercept of the line 3x - 2y = 6? (2020) 2020
Show solution
Solution
Setting x = 0, we get -2y = 6, so y = -3.
Correct Answer:
A
— 3
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Q. What is the y-intercept of the line 3x - 2y = 6? (2022)
Show solution
Solution
Set x = 0: -2y = 6 => y = -3, y-intercept is 3.
Correct Answer:
B
— 2
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Q. What is the y-intercept of the line 3x - 4y = 12? (2023)
Show solution
Solution
Setting x = 0, we get -4y = 12, so y = -3.
Correct Answer:
A
— 3
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Q. What is the y-intercept of the line 4x + 5y - 20 = 0?
Show solution
Solution
Setting x = 0 in the equation gives 5y = 20, thus y = 4. The y-intercept is 4.
Correct Answer:
B
— 5
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Q. What is the y-intercept of the line 5x + 2y - 10 = 0?
Show solution
Solution
Setting x = 0 in the equation gives 2y - 10 = 0, thus y = 5.
Correct Answer:
C
— 2
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Q. What is the y-intercept of the line given by the equation 2x + 5y - 10 = 0? (2019)
Show solution
Solution
Rearranging to y = (-2/5)x + 2, the y-intercept is 2.
Correct Answer:
A
— 2
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Q. What is the y-intercept of the line given by the equation 5x - 2y = 10? (2023)
Show solution
Solution
Rearranging to slope-intercept form: -2y = -5x + 10, thus y = (5/2)x - 5. The y-intercept is -5.
Correct Answer:
D
— -2
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Q. What is the y-intercept of the line represented by the equation 4x - y + 8 = 0? (2019)
Show solution
Solution
Setting x = 0 in the equation gives -y + 8 = 0, thus y = 8.
Correct Answer:
A
— 8
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