NDA MCQ & Objective Questions
The National Defence Academy (NDA) exam is a crucial stepping stone for students aspiring to join the Indian Armed Forces. It tests not only knowledge but also the ability to apply concepts effectively. Practicing NDA MCQs and objective questions is essential for enhancing your exam preparation, as it helps in identifying important questions and boosts confidence in tackling various subjects.
What You Will Practise Here
Mathematics: Key concepts, formulas, and problem-solving techniques.
General Knowledge: Current affairs, history, and geography relevant to NDA.
English: Grammar, comprehension, and vocabulary exercises.
Physics: Fundamental principles and application-based questions.
Chemistry: Important definitions, reactions, and theoretical concepts.
Logical Reasoning: Techniques for solving puzzles and analytical questions.
Military History: Significant events and figures in Indian military history.
Exam Relevance
The NDA exam is not only significant for aspiring defence candidates but also aligns with various school and competitive exams like CBSE, State Boards, NEET, and JEE. Questions often follow a pattern that includes multiple-choice formats, requiring students to apply their knowledge effectively. Understanding the common question types and formats will enhance your readiness for these exams.
Common Mistakes Students Make
Misinterpreting questions due to lack of careful reading.
Overlooking important formulas in Mathematics and Physics.
Confusing similar concepts in Chemistry and General Knowledge.
Neglecting to practice logical reasoning, leading to time management issues.
Failing to revise key definitions and terms in English and other subjects.
FAQs
Question: What are NDA MCQ questions?Answer: NDA MCQ questions are multiple-choice questions designed to test your knowledge and understanding of various subjects relevant to the NDA exam.
Question: How can I prepare for NDA objective questions with answers?Answer: Regular practice of NDA objective questions, along with reviewing answers and explanations, will help solidify your understanding and improve your performance.
Question: What are some important NDA questions for exams?Answer: Important NDA questions often cover key concepts in Mathematics, General Knowledge, English, and Science, focusing on application and analytical skills.
Start your journey towards success by solving NDA practice MCQs today! Testing your understanding through these objective questions will not only prepare you for the exam but also build your confidence to excel.
Q. What is the approximate temperature range of the Earth's mantle? (2020)
A.
200-400 °C
B.
500-900 °C
C.
1,000-3,000 °C
D.
3,000-5,000 °C
Show solution
Solution
The temperature of the Earth's mantle ranges from about 1,000 °C to 3,000 °C as you go deeper.
Correct Answer:
C
— 1,000-3,000 °C
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Q. What is the approximate temperature range of the Earth's outer core? (2020)
A.
1,000 - 2,000 °C
B.
2,000 - 4,000 °C
C.
4,000 - 6,000 °C
D.
6,000 - 8,000 °C
Show solution
Solution
The temperature of the Earth's outer core ranges from approximately 4,000 to 6,000 degrees Celsius.
Correct Answer:
C
— 4,000 - 6,000 °C
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Q. What is the approximate thickness of the Earth's crust? (2021)
A.
5-10 km
B.
30-50 km
C.
70-100 km
D.
100-150 km
Show solution
Solution
The Earth's crust varies in thickness, averaging about 30-50 km under continents and about 5-10 km under oceans.
Correct Answer:
B
— 30-50 km
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Q. What is the area of a circle with a diameter of 10 units?
A.
25π square units
B.
50π square units
C.
100π square units
D.
75π square units
Show solution
Solution
Area = π * (radius^2) = π * (5^2) = 25π square units.
Correct Answer:
A
— 25π square units
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Q. What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)
A.
28.26 cm²
B.
9.42 cm²
C.
18.84 cm²
D.
12.56 cm²
Show solution
Solution
Area = π * radius² = 3.14 * 3² = 3.14 * 9 = 28.26 cm².
Correct Answer:
A
— 28.26 cm²
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Q. What is the area of a circle with a radius of 4 cm? (Use π = 3.14) (2022)
A.
50.24 cm²
B.
25.12 cm²
C.
12.56 cm²
D.
31.36 cm²
Show solution
Solution
Area = πr² = 3.14 * (4)² = 3.14 * 16 = 50.24 cm²
Correct Answer:
A
— 50.24 cm²
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Q. What is the area of a circle with a radius of 7 cm? (Use π = 22/7) (2019)
A.
154 cm²
B.
44 cm²
C.
77 cm²
D.
88 cm²
Show solution
Solution
Area = πr² = (22/7) × (7)² = (22/7) × 49 = 154 cm².
Correct Answer:
A
— 154 cm²
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Q. What is the area of a circle with a radius of 7 cm? (Use π ≈ 3.14)
A.
154 cm²
B.
100 cm²
C.
44 cm²
D.
78.5 cm²
Show solution
Solution
Area = πr² = 3.14 × (7)² = 3.14 × 49 = 153.86 cm², approximately 154 cm².
Correct Answer:
A
— 154 cm²
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Q. What is the area of a rectangle with length 8 cm and width 3 cm? (2021)
A.
24 cm²
B.
30 cm²
C.
20 cm²
D.
18 cm²
Show solution
Solution
Area = length × width = 8 cm × 3 cm = 24 cm².
Correct Answer:
A
— 24 cm²
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Q. What is the area of a sector of a circle with radius 10 cm and angle 90 degrees? (2022)
A.
25π cm²
B.
50π cm²
C.
100π cm²
D.
75π cm²
Show solution
Solution
Area of sector = (θ/360) × πr² = (90/360) × π × 10² = (1/4) × 100π = 25π cm².
Correct Answer:
A
— 25π cm²
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Q. What is the area of a sector of a circle with radius 6 cm and a central angle of 90 degrees? (2023)
A.
9π cm²
B.
12π cm²
C.
18π cm²
D.
6π cm²
Show solution
Solution
Area of sector = (θ/360) × πr² = (90/360) × π × 6² = (1/4) × 36π = 9π cm².
Correct Answer:
A
— 9π cm²
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Q. What is the area of a sector of a circle with radius 6 cm and angle 90 degrees? (2021)
A.
9π cm²
B.
12π cm²
C.
18π cm²
D.
6π cm²
Show solution
Solution
Area of sector = (θ/360) × πr² = (90/360) × π(6)² = (1/4) × 36π = 9π cm².
Correct Answer:
A
— 9π cm²
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Q. What is the area of a square with a side length of 8 cm? (2023)
A.
64 cm²
B.
32 cm²
C.
16 cm²
D.
48 cm²
Show solution
Solution
Area = side² = 8² = 64 cm²
Correct Answer:
A
— 64 cm²
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Q. What is the area of a trapezium with bases 5 cm and 7 cm, and height 4 cm? (2023)
A.
24 cm²
B.
20 cm²
C.
30 cm²
D.
28 cm²
Show solution
Solution
Area = 1/2 * (base1 + base2) * height = 1/2 * (5 + 7) * 4 = 24 cm²
Correct Answer:
A
— 24 cm²
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Q. What is the area of a triangle with a base of 10 units and a height of 5 units?
A.
25 square units
B.
50 square units
C.
15 square units
D.
30 square units
Show solution
Solution
Area = 1/2 * base * height = 1/2 * 10 * 5 = 25 square units.
Correct Answer:
A
— 25 square units
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Q. What is the area of a triangle with a base of 12 cm and a height of 5 cm? (2022)
A.
30 cm²
B.
60 cm²
C.
24 cm²
D.
36 cm²
Show solution
Solution
Area = 1/2 * base * height = 1/2 * 12 * 5 = 30 cm².
Correct Answer:
A
— 30 cm²
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Q. What is the area of a triangle with a base of 6 cm and a height of 4 cm?
A.
12 cm²
B.
24 cm²
C.
18 cm²
D.
30 cm²
Show solution
Solution
Area = 1/2 × base × height = 1/2 × 6 cm × 4 cm = 12 cm².
Correct Answer:
A
— 12 cm²
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Q. What is the area of a triangle with a base of 8 cm and a height of 5 cm? (2020)
A.
20 cm²
B.
30 cm²
C.
40 cm²
D.
10 cm²
Show solution
Solution
The area of a triangle is given by A = 1/2 * base * height. Here, A = 1/2 * 8 * 5 = 20 cm².
Correct Answer:
A
— 20 cm²
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Q. What is the area of an equilateral triangle with a side length of 6 cm? (2022)
A.
9√3 cm²
B.
12√3 cm²
C.
18√3 cm²
D.
24√3 cm²
Show solution
Solution
Area = (√3/4) * side² = (√3/4) * 6² = (√3/4) * 36 = 9√3 cm².
Correct Answer:
A
— 9√3 cm²
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Q. What is the area under the curve y = 1/x from x = 1 to x = 4?
A.
ln(4)
B.
ln(3)
C.
ln(2)
D.
ln(1)
Show solution
Solution
The area under the curve is given by ∫(from 1 to 4) (1/x) dx = [ln(x)] from 1 to 4 = ln(4) - ln(1) = ln(4).
Correct Answer:
A
— ln(4)
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Q. What is the area under the curve y = 2x^2 + 3 from x = 0 to x = 2?
Show solution
Solution
The area under the curve is given by ∫(from 0 to 2) (2x^2 + 3) dx = [(2/3)x^3 + 3x] from 0 to 2 = (16/3 + 6) = 10.
Correct Answer:
B
— 12
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Q. What is the average atmospheric pressure at sea level in hPa?
A.
1013.25 hPa
B.
1000 hPa
C.
1020 hPa
D.
980 hPa
Show solution
Solution
The average atmospheric pressure at sea level is approximately 1013.25 hPa.
Correct Answer:
A
— 1013.25 hPa
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Q. What is the average atmospheric pressure at sea level in millibars? (2021)
A.
1013.25 mb
B.
1000 mb
C.
1020 mb
D.
980 mb
Show solution
Solution
The average atmospheric pressure at sea level is defined as 1013.25 millibars.
Correct Answer:
A
— 1013.25 mb
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Q. What is the average density of the Earth? (2020)
A.
2.5 g/cm³
B.
5.5 g/cm³
C.
7.5 g/cm³
D.
9.5 g/cm³
Show solution
Solution
The average density of the Earth is about 5.5 g/cm³, which is higher than the density of the crust.
Correct Answer:
B
— 5.5 g/cm³
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Q. What is the average temperature of a location if the maximum temperature recorded is 30°C and the minimum is 20°C? (2021)
A.
25°C
B.
20°C
C.
30°C
D.
15°C
Show solution
Solution
Average temperature = (Maximum + Minimum) / 2 = (30 + 20) / 2 = 25°C.
Correct Answer:
A
— 25°C
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Q. What is the average temperature of the Earth in degrees Celsius?
A.
15°C
B.
20°C
C.
25°C
D.
30°C
Show solution
Solution
The average temperature of the Earth is approximately 15°C.
Correct Answer:
A
— 15°C
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Q. What is the axis of symmetry for the parabola given by the equation y = -3(x - 2)^2 + 5?
A.
x = 2
B.
y = 5
C.
y = -3
D.
x = -2
Show solution
Solution
The axis of symmetry for a parabola in vertex form y = a(x - h)^2 + k is x = h. Here, h = 2.
Correct Answer:
A
— x = 2
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Q. What is the axis of symmetry for the parabola given by the equation y^2 = 6x?
A.
x-axis
B.
y-axis
C.
y = x
D.
x = 0
Show solution
Solution
The axis of symmetry for the parabola y^2 = 4px is the x-axis.
Correct Answer:
B
— y-axis
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Q. What is the balanced equation for the combustion of propane (C3H8)? (2021)
A.
C3H8 + 5O2 → 3CO2 + 4H2O
B.
C3H8 + 4O2 → 3CO2 + 2H2O
C.
C3H8 + 3O2 → 3CO + 4H2O
D.
C3H8 + 2O2 → 3CO2 + 2H2O
Show solution
Solution
The balanced equation for the combustion of propane is C3H8 + 5O2 → 3CO2 + 4H2O.
Correct Answer:
A
— C3H8 + 5O2 → 3CO2 + 4H2O
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Q. What is the caloric value of one gram of fat?
A.
4 calories
B.
7 calories
C.
9 calories
D.
12 calories
Show solution
Solution
One gram of fat provides approximately 9 calories, making it the most energy-dense macronutrient.
Correct Answer:
C
— 9 calories
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