Defence Exams MCQ & Objective Questions
Defence Exams play a crucial role in shaping the future of aspiring candidates in India. These exams not only assess knowledge but also test the ability to apply concepts in real-world scenarios. Practicing MCQs and objective questions is essential for effective exam preparation, as it helps students identify important questions and enhances their understanding of key topics.
What You Will Practise Here
Fundamentals of Defence Studies
Key Historical Events and Their Impact
Important Defence Policies and Strategies
Current Affairs Related to National Security
Basic Concepts of Military Operations
Understanding Defence Technologies
Analysing Defence Budget and Expenditure
Exam Relevance
The topics covered in Defence Exams are highly relevant across various educational boards, including CBSE and State Boards, as well as competitive exams like NEET and JEE. Students can expect questions that focus on historical events, current affairs, and fundamental concepts related to defence. Common question patterns include multiple-choice questions that assess both theoretical knowledge and practical application.
Common Mistakes Students Make
Overlooking current affairs, which are often integrated into exam questions.
Confusing similar historical events or dates, leading to incorrect answers.
Neglecting the importance of definitions and key terms in objective questions.
Relying solely on rote memorization instead of understanding concepts.
FAQs
Question: What types of questions can I expect in Defence Exams?Answer: You can expect a mix of MCQs covering historical events, current affairs, and fundamental concepts related to defence.
Question: How can I improve my performance in Defence Exams?Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Start your journey towards success by solving practice MCQs today! Testing your understanding will not only boost your confidence but also prepare you for the important Defence Exams ahead.
Q. If the angles of a quadrilateral are in the ratio 1:2:3:4, what is the measure of the largest angle?
A.
90 degrees
B.
120 degrees
C.
150 degrees
D.
180 degrees
Show solution
Solution
Let the angles be x, 2x, 3x, and 4x. The sum of angles in a quadrilateral is 360 degrees. Therefore, x + 2x + 3x + 4x = 360, which gives 10x = 360, so x = 36 degrees. The largest angle = 4x = 144 degrees.
Correct Answer:
C
— 150 degrees
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Q. If the angles of triangle JKL are in the ratio 2:3:4, what is the measure of the largest angle? (2023)
A.
40 degrees
B.
60 degrees
C.
80 degrees
D.
90 degrees
Show solution
Solution
Let the angles be 2x, 3x, and 4x. Then, 2x + 3x + 4x = 180 degrees. Therefore, 9x = 180, x = 20. The largest angle is 4x = 80 degrees.
Correct Answer:
C
— 80 degrees
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Q. If the angles of triangle MNO are in the ratio 2:3:4, what is the measure of the largest angle? (2023)
A.
40 degrees
B.
60 degrees
C.
80 degrees
D.
90 degrees
Show solution
Solution
Let the angles be 2x, 3x, and 4x. Then, 2x + 3x + 4x = 180 degrees. Thus, 9x = 180 degrees, x = 20 degrees. The largest angle = 4x = 80 degrees.
Correct Answer:
C
— 80 degrees
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Q. If the area of a circle is 50π cm², what is the diameter? (2022)
A.
10 cm
B.
20 cm
C.
25 cm
D.
15 cm
Show solution
Solution
Area = πr² = 50π. Thus, r² = 50, r = √50 = 5√2 cm. Diameter = 2r = 10√2 cm ≈ 20 cm.
Correct Answer:
B
— 20 cm
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Q. If the area of a rectangle is 48 square units and the length is 8 units, what is the width? (2022)
A.
4 units
B.
6 units
C.
8 units
D.
10 units
Show solution
Solution
Area = Length × Width. Therefore, Width = Area / Length = 48 / 8 = 6 units.
Correct Answer:
A
— 4 units
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Q. If the area of a triangle is 30 cm² and the base is 10 cm, what is the height? (2020)
A.
3 cm
B.
6 cm
C.
9 cm
D.
12 cm
Show solution
Solution
Area = 1/2 * base * height. Thus, 30 = 1/2 * 10 * height. Solving gives height = 6 cm.
Correct Answer:
B
— 6 cm
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Q. If the area of a triangle is 48 cm² and the base is 12 cm, what is the height? (2022)
A.
6 cm
B.
8 cm
C.
4 cm
D.
10 cm
Show solution
Solution
Area = 1/2 * base * height, so 48 = 1/2 * 12 * height, height = 48/(6) = 8 cm.
Correct Answer:
B
— 8 cm
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Q. If the area of a triangle is 60 square units and the base is 10 units, what is the height? (2019)
Show solution
Solution
The area of a triangle is given by (1/2) * base * height. Thus, 60 = (1/2) * 10 * height. Solving for height gives height = 12 units.
Correct Answer:
A
— 12
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Q. If the area of triangle ABC is 60 square units and the base AC is 12 units, what is the height from point B to line AC? (2019)
A.
5 units
B.
10 units
C.
15 units
D.
20 units
Show solution
Solution
Area = 1/2 * base * height. Therefore, 60 = 1/2 * 12 * height, which gives height = 10 units.
Correct Answer:
A
— 5 units
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Q. If the area of triangle ABC is 60 square units and the base is 10 units, what is the height? (2019)
A.
6 units
B.
12 units
C.
10 units
D.
8 units
Show solution
Solution
Area = 1/2 * base * height. Therefore, 60 = 1/2 * 10 * height, which gives height = 12 units.
Correct Answer:
A
— 6 units
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Q. If the area of triangle ABC is 60 square units and the base is 10 units, what is the height of the triangle? (2019)
A.
6 units
B.
12 units
C.
10 units
D.
8 units
Show solution
Solution
Area = 1/2 * base * height. Therefore, 60 = 1/2 * 10 * height, which gives height = 12 units.
Correct Answer:
A
— 6 units
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Q. If the area of triangle ABC is 60 square units and the base is 12 units, what is the height? (2019)
A.
5 units
B.
10 units
C.
15 units
D.
20 units
Show solution
Solution
Area = 1/2 * base * height. Therefore, 60 = 1/2 * 12 * height, which gives height = 10 units.
Correct Answer:
A
— 5 units
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Q. If the area of triangle ABC is 60 square units and the base is 12 units, what is the height of the triangle? (2019)
A.
5 units
B.
10 units
C.
15 units
D.
20 units
Show solution
Solution
Area = 1/2 * base * height. Therefore, 60 = 1/2 * 12 * height, which gives height = 10 units.
Correct Answer:
A
— 5 units
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Q. If the atmospheric pressure at sea level is 1013 hPa, what is the pressure at 5000 meters altitude approximately?
A.
500 hPa
B.
700 hPa
C.
800 hPa
D.
900 hPa
Show solution
Solution
The atmospheric pressure at 5000 meters is approximately 700 hPa.
Correct Answer:
B
— 700 hPa
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Q. If the atmospheric pressure is 1013 hPa, what is it in mmHg?
A.
760 mmHg
B.
800 mmHg
C.
850 mmHg
D.
900 mmHg
Show solution
Solution
The atmospheric pressure of 1013 hPa is equivalent to 760 mmHg.
Correct Answer:
A
— 760 mmHg
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Q. If the average age of members in the Lok Sabha is 50 years and there are 545 members, what is the total age of all members? (2019)
A.
25000
B.
27000
C.
29000
D.
30000
Show solution
Solution
Total age = Average age * Number of members = 50 * 545 = 27250, approximately 29000.
Correct Answer:
C
— 29000
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Q. If the average incubation period of a disease is 14 days, how many days will it take for 3 incubation periods to pass? (2020)
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Solution
Total days = 3 × 14 = 42 days.
Correct Answer:
B
— 42
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Q. If the average of 10 numbers is 50, what is the sum of these numbers?
A.
500
B.
600
C.
550
D.
450
Show solution
Solution
Sum = Average * Number of items = 50 * 10 = 500.
Correct Answer:
A
— 500
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Q. If the average of 6 numbers is 30, what is the average if one number is increased by 10?
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Solution
Total of 6 numbers = 6 * 30 = 180.\n\nNew total = 180 + 10 = 190.\n\nNew average = 190 / 6 = 31.67.
Correct Answer:
B
— 32
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Q. If the average of 7, 9, 11, and 13 is x, what is the value of x? (2023)
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Solution
Mean = (7 + 9 + 11 + 13) / 4 = 10.
Correct Answer:
B
— 10
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Q. If the average of a set of numbers is 12 and there are 6 numbers, what is the total sum of the numbers?
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Solution
Total sum = Average * Number of items = 12 * 6 = 72.
Correct Answer:
B
— 72
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Q. If the average of five numbers is 20, what is their total sum? (2023)
A.
80
B.
100
C.
120
D.
140
Show solution
Solution
Average = Total Sum / Number of Items. Therefore, Total Sum = Average × Number of Items = 20 × 5 = 100.
Correct Answer:
A
— 80
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Q. If the average of five numbers is 60, what is the total of these numbers?
A.
300
B.
250
C.
350
D.
400
Show solution
Solution
The total of the five numbers is calculated as average * number of items = 60 * 5 = 300.
Correct Answer:
A
— 300
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Q. If the average velocity of a river increases from 2 m/s to 4 m/s, how does the discharge change if the width remains constant?
A.
Doubles
B.
Halves
C.
Remains the same
D.
Increases by 50%
Show solution
Solution
Discharge is directly proportional to velocity. If velocity doubles, discharge also doubles.
Correct Answer:
A
— Doubles
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Q. If the base of a triangle is 10 cm and the height is 5 cm, what is the area of the triangle? (2022)
A.
25 cm²
B.
50 cm²
C.
15 cm²
D.
30 cm²
Show solution
Solution
Area = (1/2) * base * height = (1/2) * 10 * 5 = 25 cm².
Correct Answer:
A
— 25 cm²
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Q. If the boiling point of water is 100°C, what is the corresponding temperature in Kelvin? (2021)
A.
273 K
B.
373 K
C.
400 K
D.
450 K
Show solution
Solution
Temperature in Kelvin (K) = °C + 273 = 100 + 273 = 373 K.
Correct Answer:
B
— 373 K
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Q. If the center of a circle is at (3, 4) and it passes through the point (7, 1), what is the radius? (2019)
A.
5 units
B.
4 units
C.
3 units
D.
6 units
Show solution
Solution
Radius = distance from center to point = √[(7-3)² + (1-4)²] = √[16 + 9] = √25 = 5 units.
Correct Answer:
A
— 5 units
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Q. If the chance of contracting a disease is 1 in 500, what is the percentage chance of not contracting the disease? (2023)
A.
99.8%
B.
99.9%
C.
98.5%
D.
97.5%
Show solution
Solution
The chance of not contracting the disease = 1 - (1/500) = 499/500 = 0.998 = 99.8%.
Correct Answer:
B
— 99.9%
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Q. If the circumference of a circle is 31.4 units, what is its radius? (Use π = 3.14) (2020)
Show solution
Solution
Circumference = 2πr. Setting 31.4 = 2 × 3.14 × r gives r = 5 units.
Correct Answer:
A
— 5
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Q. If the circumference of a circle is 31.4 units, what is the radius? (Use π = 3.14) (2020)
Show solution
Solution
The circumference C = 2πr. Setting 31.4 = 2 * 3.14 * r gives r = 5.
Correct Answer:
A
— 5
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