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. What is the mode of the following numbers: 4, 4, 5, 6, 6, 7, 8?
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Solution
The mode is 4, as it appears 2 times, which is more than any other number.
Correct Answer:
A
— 4
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Q. What is the mode of the following numbers: {2, 3, 4, 4, 5, 5, 5, 6}?
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Solution
The mode is 5, as it appears 3 times, more than any other number.
Correct Answer:
C
— 5
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Q. What is the mode of the following numbers: {6, 7, 8, 6, 9, 10, 6, 7}?
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Solution
The mode is 6, which appears 3 times in the data set.
Correct Answer:
A
— 6
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Q. What is the mode of the numbers: 1, 1, 2, 3, 3, 3, 4, 4?
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Solution
The mode is 3, as it appears most frequently (three times) in the data set.
Correct Answer:
C
— 3
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Q. What is the next prime number after 7?
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Solution
The next prime number after 7 is 11.
Correct Answer:
D
— 11
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Q. What is the order of a matrix with 3 rows and 4 columns? (2021)
A.
3x4
B.
4x3
C.
3x3
D.
4x4
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Solution
The order of a matrix is given by the number of rows followed by the number of columns. Therefore, a matrix with 3 rows and 4 columns is of order 3x4.
Correct Answer:
A
— 3x4
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Q. What is the perimeter of a rectangle with a length of 8 units and a width of 3 units?
A.
22 units
B.
24 units
C.
20 units
D.
18 units
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Solution
Perimeter = 2 * (length + width) = 2 * (8 + 3) = 22 units.
Correct Answer:
A
— 22 units
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Q. What is the perimeter of a rectangle with length 10 cm and width 5 cm? (2021)
A.
30 cm
B.
25 cm
C.
20 cm
D.
15 cm
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Solution
The perimeter of a rectangle is given by P = 2(length + width). Here, P = 2(10 + 5) = 30 cm.
Correct Answer:
B
— 25 cm
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Q. What is the perimeter of a rectangle with length 8 units and width 3 units?
A.
22 units
B.
24 units
C.
20 units
D.
18 units
Show solution
Solution
Perimeter = 2 * (length + width) = 2 * (8 + 3) = 22 units.
Correct Answer:
A
— 22 units
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Q. What is the perimeter of a square with a side length of 4 cm?
A.
8 cm
B.
12 cm
C.
16 cm
D.
20 cm
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Solution
Perimeter of a square = 4 × side = 4 × 4 cm = 16 cm.
Correct Answer:
C
— 16 cm
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Q. What is the perimeter of a square with a side length of 6 cm? (2019)
A.
24 cm
B.
20 cm
C.
18 cm
D.
30 cm
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Solution
Perimeter = 4 * Side = 4 * 6 cm = 24 cm.
Correct Answer:
A
— 24 cm
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Q. What is the perimeter of an equilateral triangle with each side measuring 8 cm? (2021)
A.
16 cm
B.
24 cm
C.
32 cm
D.
20 cm
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Solution
The perimeter of an equilateral triangle is 3 times the length of one side. Therefore, perimeter = 3 * 8 = 24 cm.
Correct Answer:
B
— 24 cm
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Q. What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-7 M?
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Solution
pH = -log[H+] = -log(1 x 10^-7) = 7.
Correct Answer:
A
— 7
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Q. What is the phenomenon called when sound waves bounce off a surface? (2021)
A.
Refraction
B.
Reflection
C.
Diffraction
D.
Interference
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Solution
The bouncing back of sound waves from a surface is called reflection.
Correct Answer:
B
— Reflection
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Q. What is the potential difference across a 10-ohm resistor carrying a current of 3 A?
A.
30 V
B.
10 V
C.
3 V
D.
0.3 V
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Solution
Using Ohm's Law (V = I * R), V = 3 A * 10 Ω = 30 V.
Correct Answer:
A
— 30 V
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Q. What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)
A.
100 J
B.
50 J
C.
20 J
D.
10 J
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Solution
Potential energy (PE) = mgh = 2 kg * 10 m/s² * 5 m = 100 J.
Correct Answer:
A
— 100 J
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Q. What is the power consumed by a device that operates at 12 volts and draws a current of 2 amperes? (2020)
A.
24 W
B.
12 W
C.
6 W
D.
48 W
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Solution
Power (P) is given by P = V * I. Thus, P = 12 V * 2 A = 24 W.
Correct Answer:
A
— 24 W
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Q. What is the power consumed by a device that operates at 120 V and draws a current of 2 A?
A.
240 W
B.
60 W
C.
120 W
D.
30 W
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Solution
Power (P) is calculated using the formula P = V * I. Therefore, P = 120 V * 2 A = 240 W.
Correct Answer:
A
— 240 W
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Q. What is the power consumed by a device that operates at 120 volts and draws a current of 3 amperes?
A.
360 W
B.
40 W
C.
120 W
D.
240 W
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Solution
Power P is calculated using P = V * I. Therefore, P = 120 V * 3 A = 360 W.
Correct Answer:
A
— 360 W
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Q. What is the power consumed by a device that operates at 120V and draws a current of 3A? (2021)
A.
360 W
B.
240 W
C.
120 W
D.
30 W
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Solution
Power (P) = Voltage (V) × Current (I) = 120V × 3A = 360W.
Correct Answer:
A
— 360 W
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Q. What is the power consumed by a device that operates at a voltage of 120 volts and draws a current of 3 amperes?
A.
360 watts
B.
40 watts
C.
120 watts
D.
240 watts
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Solution
Power (P) is calculated as P = V * I. Thus, P = 120 V * 3 A = 360 W.
Correct Answer:
A
— 360 watts
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Q. What is the primary aim of the National Rural Livelihood Mission (NRLM)? (2011)
A.
To provide free education
B.
To promote self-employment and organization of rural poor
C.
To enhance agricultural productivity
D.
To provide health insurance
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Solution
The primary aim of the NRLM is to promote self-employment and organize the rural poor into self-help groups.
Correct Answer:
B
— To promote self-employment and organization of rural poor
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Q. What is the primary cause of ocean currents?
A.
Wind patterns
B.
Earth's rotation
C.
Temperature differences
D.
Salinity differences
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Solution
The primary cause of ocean currents is wind patterns, which drive the movement of water across the surface.
Correct Answer:
A
— Wind patterns
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Q. What is the primary cause of sediment transport in rivers?
A.
Gravity
B.
Wind
C.
Human activity
D.
Temperature changes
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Solution
Gravity is the primary force that causes sediment to be transported downstream in rivers.
Correct Answer:
A
— Gravity
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Q. What is the primary cause of wind?
A.
Earth's rotation
B.
Temperature differences
C.
Humidity differences
D.
Pressure differences
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Solution
Wind is primarily caused by differences in atmospheric pressure.
Correct Answer:
D
— Pressure differences
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Q. What is the primary characteristic of metals? (2019)
A.
Brittleness
B.
Luster
C.
Dullness
D.
Insulation
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Solution
Metals are known for their luster, which is the shiny appearance they exhibit when polished.
Correct Answer:
B
— Luster
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Q. What is the primary characteristic of non-metals?
A.
Good conductors of heat
B.
High density
C.
Brittleness
D.
Luster
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Solution
Non-metals are generally brittle in solid form and do not exhibit metallic luster.
Correct Answer:
C
— Brittleness
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Q. What is the primary characteristic that distinguishes metals from non-metals? (2019)
A.
Luster
B.
Brittleness
C.
Conductivity
D.
Density
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Solution
Metals are generally good conductors of heat and electricity, while non-metals are poor conductors.
Correct Answer:
C
— Conductivity
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Q. What is the primary characteristic that distinguishes solids from liquids? (2021)
A.
Solids have a definite shape and volume
B.
Liquids have a definite shape and volume
C.
Solids can flow
D.
Liquids can be compressed easily
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Solution
Solids maintain a definite shape and volume due to closely packed particles, while liquids take the shape of their container but have a definite volume.
Correct Answer:
A
— Solids have a definite shape and volume
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Q. What is the primary component of the cell wall in plant cells?
A.
Cellulose
B.
Chitin
C.
Peptidoglycan
D.
Lipid
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Solution
The cell wall of plant cells is primarily made of cellulose, providing structural support.
Correct Answer:
A
— Cellulose
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