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. A rectangular field is 50 meters long and 30 meters wide. If a fence is built around it, what is the total length of the fence?

A. 160 m
B. 140 m
C. 120 m
D. 180 m

Solution

Perimeter = 2(length + width) = 2(50 + 30) = 2 × 80 = 160 m.

Correct Answer: A — 160 m

Q. A rectangular garden has a length of 12 m and a width of 5 m. If a path of width 1 m is built around it, what is the area of the path?

A. 50 m²
B. 60 m²
C. 70 m²
D. 80 m²

Solution

Area of the garden = 12 × 5 = 60 m². Area of the garden with the path = (12 + 2) × (5 + 2) = 14 × 7 = 98 m². Area of the path = 98 - 60 = 38 m².

Correct Answer: B — 60 m²

Q. A rectangular garden has a length of 30 meters and a width of 20 meters. What is the area of the garden?

A. 600 m²
B. 500 m²
C. 400 m²
D. 300 m²

Solution

Area = length × width = 30 × 20 = 600 m².

Correct Answer: A — 600 m²

Q. A rectangular garden is 10 m long and 6 m wide. If a path of width 1 m is built around it, what is the area of the path? (2023)

A. 32 m²
B. 36 m²
C. 40 m²
D. 44 m²

Solution

Area of the garden = 10 * 6 = 60 m². Area including the path = (10 + 2) * (6 + 2) = 12 * 8 = 96 m². Area of the path = 96 - 60 = 36 m².

Correct Answer: B — 36 m²

Q. A rectangular garden is 30 meters long and 20 meters wide. If a path of 1 meter width is built around it, what is the area of the path?

A. 80 m²
B. 100 m²
C. 120 m²
D. 140 m²

Solution

Area of the garden = 30 × 20 = 600 m². Area including the path = (30 + 2) × (20 + 2) = 32 × 22 = 704 m². Area of the path = 704 - 600 = 104 m².

Correct Answer: B — 100 m²

Q. A rectangular plate of mass M and dimensions a x b is rotated about an axis along one of its edges. What is its moment of inertia?

A. 1/3 Ma^2
B. 1/12 Ma^2 + 1/3 Mb^2
C. 1/2 Ma^2
D. 1/4 Ma^2 + 1/3 Mb^2

Solution

The moment of inertia of a rectangular plate about an edge is I = 1/12 Ma^2 + 1/3 Mb^2.

Correct Answer: B — 1/12 Ma^2 + 1/3 Mb^2

Q. A rectangular plot has a length of 50 meters and a width of 30 meters. If a path of 2 meters width is built around it, what is the area of the path?

A. 320 m²
B. 400 m²
C. 600 m²
D. 800 m²

Solution

Total area with path = (50 + 4) × (30 + 4) = 54 × 34 = 1836 m². Area of the plot = 50 × 30 = 1500 m². Area of the path = 1836 - 1500 = 336 m².

Correct Answer: B — 400 m²

Q. A rectangular prism has dimensions 3 cm, 4 cm, and 5 cm. What is its volume?

A. 60 cm³
B. 12 cm³
C. 15 cm³
D. 20 cm³

Solution

Volume of a rectangular prism = length × width × height = 3 × 4 × 5 = 60 cm³.

Correct Answer: A — 60 cm³

Q. A rectangular prism has dimensions 3 m, 4 m, and 5 m. What is its surface area?

A. 47 m²
B. 60 m²
C. 70 m²
D. 80 m²

Solution

The surface area of a rectangular prism is given by SA = 2(lw + lh + wh). Here, SA = 2(3*4 + 3*5 + 4*5) = 2(12 + 15 + 20) = 2(47) = 94 m².

Correct Answer: B — 60 m²

Q. A rectangular prism has dimensions 4 m, 3 m, and 5 m. What is its surface area?

A. 47 m²
B. 60 m²
C. 70 m²
D. 80 m²

Solution

The surface area of a rectangular prism is given by SA = 2(lw + lh + wh). Here, SA = 2(4*3 + 4*5 + 3*5) = 2(12 + 20 + 15) = 2(47) = 94 m².

Correct Answer: B — 60 m²

Q. A rectangular prism has dimensions 4 m, 5 m, and 6 m. What is its surface area?

A. 94 m²
B. 60 m²
C. 70 m²
D. 80 m²

Solution

The surface area of a rectangular prism is given by SA = 2(lw + lh + wh). Here, SA = 2(4*5 + 4*6 + 5*6) = 94 m².

Correct Answer: A — 94 m²

Q. A rectangular swimming pool is 10 meters long and 5 meters wide. If the depth of the pool is 2 meters, what is the volume of water it can hold?

A. 100 cubic meters
B. 50 cubic meters
C. 200 cubic meters
D. 150 cubic meters

Solution

Volume = length * width * depth = 10 * 5 * 2 = 100 cubic meters.

Correct Answer: A — 100 cubic meters

Q. A refrigerator operates between 250 K and 300 K. What is its coefficient of performance (COP)? (2022)

A. 1.2
B. 2.0
C. 3.0
D. 4.0

Solution

COP = T_cold / (T_hot - T_cold) = 250 K / (300 K - 250 K) = 250 / 50 = 5.0.

Correct Answer: C — 3.0

Q. A refrigerator removes heat from the inside at a rate of 200 J/s and expels it to the surroundings at a rate of 250 J/s. What is the coefficient of performance (COP) of the refrigerator? (2023)

A. 0.8
B. 1.25
C. 1.5
D. 2.0

Solution

COP = Q_in / W = 200 J/s / (250 J/s - 200 J/s) = 200 / 50 = 4.

Correct Answer: B — 1.25

Q. A refrigerator removes heat from the inside at a rate of 200 J/s and expels it to the outside at a rate of 250 J/s. What is the coefficient of performance (COP) of the refrigerator? (2022)

A. 0.8
B. 1.25
C. 1.5
D. 2.0

Solution

COP = Q_c / W = 200 J/s / (250 J/s - 200 J/s) = 200 / 50 = 4.

Correct Answer: B — 1.25

Q. A refrigerator removes heat from the interior at a rate of 200 W. If the coefficient of performance (COP) is 4, what is the power consumed by the refrigerator?

A. 50 W
B. 100 W
C. 200 W
D. 800 W

Solution

COP = Qc/W, thus W = Qc/COP = 200 W / 4 = 50 W.

Correct Answer: B — 100 W

Q. A relief fund of $50,000 is to be distributed among 5 affected areas equally. How much will each area receive?

A. $8,000
B. $10,000
C. $12,000
D. $15,000

Solution

$50,000 / 5 = $10,000 per area.

Correct Answer: B — $10,000

Q. A renewable energy project costs $2 million and is expected to save $300,000 annually. What is the payback period in years?

A. 5 years
B. 6.67 years
C. 7 years
D. 8 years

Solution

Payback period = Total cost / Annual savings = 2,000,000 / 300,000 = 6.67 years.

Correct Answer: B — 6.67 years

Q. A renewable energy project costs $500,000 and is expected to save $100,000 annually in energy costs. How many years will it take to break even?

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

Solution

$500,000 / $100,000 = 5 years

Correct Answer: C — 5 years

Q. A renewable energy project costs $500,000 and is expected to save $50,000 annually in energy costs. How many years will it take to break even?

A. 5 years
B. 10 years
C. 15 years
D. 20 years

Solution

$500,000 / $50,000 = 10 years

Correct Answer: B — 10 years

Q. A report claims that increased screen time is linked to higher rates of anxiety in teenagers. What can be inferred from this report?

A. All teenagers with high screen time experience anxiety.
B. Screen time is the sole cause of anxiety in teenagers.
C. There is a correlation between screen time and anxiety levels.
D. Teenagers should reduce screen time to avoid anxiety.

Solution

The report indicates a link, suggesting a correlation, but does not imply causation or that all teenagers are affected.

Correct Answer: C — There is a correlation between screen time and anxiety levels.

Q. A report indicates that 30% of government contracts are awarded through corrupt means. If there are 500 contracts, how many are likely awarded corruptly?

A. 100
B. 120
C. 150
D. 180

Solution

30% of 500 is 150.

Correct Answer: C — 150

Q. A report indicates that 70% of employees feel that ethical practices improve workplace morale. If there are 300 employees, how many feel this way?

A. 180
B. 200
C. 210
D. 220

Solution

70% of 300 is calculated as (70/100) * 300 = 210.

Correct Answer: C — 210

Q. A report states that 25% of the employees in a firm are part-time workers. If there are 160 employees, how many are part-time?

A. 30
B. 40
C. 50
D. 60

Solution

25% of 160 is calculated as (25/100) * 160 = 40.

Correct Answer: B — 40

Q. A report states that 40% of children in a city live in poverty. If there are 2,500 children in the city, how many live in poverty?

A. 800
B. 900
C. 1,000
D. 1,100

Solution

40% of 2,500 is 0.40 * 2500 = 1,000.

Correct Answer: C — 1,000

Q. A report states that 5% of a population of 10,000 is disabled. How many disabled individuals are there?

A. 400
B. 500
C. 600
D. 700

Solution

Disabled individuals = 5% of 10,000 = 0.05 * 10000 = 500.

Correct Answer: B — 500

Q. A report states that 5% of the population is unemployed. If the total population is 1,000,000, how many people are employed?

A. 950,000
B. 900,000
C. 850,000
D. 800,000

Solution

Unemployed = 5% of 1,000,000 = 50,000. Employed = 1,000,000 - 50,000 = 950,000.

Correct Answer: A — 950,000

Q. A report states that companies with flexible work hours have higher employee satisfaction. What can be inferred from this report?

A. Flexible work hours guarantee employee satisfaction.
B. All companies should adopt flexible work hours.
C. There is a positive relationship between work hours flexibility and employee satisfaction.
D. Employee satisfaction is unrelated to work hours.

Solution

The report indicates a positive relationship between flexible work hours and employee satisfaction, but it does not guarantee satisfaction or suggest that all companies should adopt this policy.

Correct Answer: C — There is a positive relationship between work hours flexibility and employee satisfaction.

Q. A report states that companies with flexible work hours have higher employee satisfaction. Which of the following can be inferred?

A. Flexible work hours lead to higher employee satisfaction.
B. All companies should adopt flexible work hours.
C. Employee satisfaction is not affected by work hours.
D. Companies without flexible hours have dissatisfied employees.

Solution

The report indicates a relationship where flexible work hours are associated with higher satisfaction, suggesting a potential causal link.

Correct Answer: A — Flexible work hours lead to higher employee satisfaction.

Q. A report states that increased screen time is linked to higher rates of anxiety among teenagers. What can be inferred from this report?

A. All teenagers with high screen time experience anxiety.
B. Screen time is the only factor contributing to teenage anxiety.
C. There is a potential relationship between screen time and anxiety.
D. Teenagers should reduce screen time to avoid anxiety.

Solution

The report indicates a link but does not claim that screen time is the sole cause of anxiety.

Correct Answer: C — There is a potential relationship between screen time and anxiety.

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