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. A river basin has an area of 200 km². If the average rainfall is 1000 mm per year, what is the total volume of water received by the basin in a year?
A.
200 million m³
B.
100 million m³
C.
300 million m³
D.
400 million m³
Solution
Volume = Area × Rainfall = 200 km² × 1000 mm = 200 km² × 1 m = 200 million m³.
Q. A river basin has an area of 200 square kilometers. If the average rainfall is 800 mm per year, how much water (in cubic meters) falls on the basin annually? (2019)
A.
160000000 m³
B.
200000000 m³
C.
240000000 m³
D.
320000000 m³
Solution
Water volume = Area × Rainfall = 200 km² × 800 mm = 200000000 m³.
Q. A river basin has an area of 2000 km². If the average rainfall is 800 mm per year, what is the total volume of water received by the basin in cubic meters? (2000)
A.
1.6 billion m³
B.
1.2 billion m³
C.
1 billion m³
D.
800 million m³
Solution
Volume = Area × Rainfall = 2000 km² × 0.8 m = 1.6 billion m³.
Q. A river basin has an area of 500 km². If the average rainfall is 800 mm per year, what is the total volume of water received by the basin in a year? (2019)
A.
400,000,000 m³
B.
500,000,000 m³
C.
600,000,000 m³
D.
700,000,000 m³
Solution
Volume = area × rainfall = 500 km² × 800 mm = 500,000,000 m³.
Q. A river flows through a region with a soil erosion rate of 5 tons per hectare per year. If the area of the watershed is 100 hectares, how much soil is eroded in a year?
Q. A river flows through a region with a soil retention capacity of 20% of its volume. If the river has a volume of 1000 m³, how much water can be retained by the soil? (2023)
A.
100 m³
B.
200 m³
C.
300 m³
D.
400 m³
Solution
Water retained = 20% of 1000 m³ = 0.2 × 1000 m³ = 200 m³.
Q. A river flows through a valley with a gradient of 1 in 1000. If the river descends 2 meters over a distance of 2000 meters, is the gradient consistent? (2023)
A.
Yes
B.
No
C.
Not enough information
D.
Depends on the soil type
Solution
Gradient = Rise / Run = 2 m / 2000 m = 1 in 1000, so it is consistent.
Q. A river flows through a valley with a gradient of 1:1000. If the river descends 2 meters over a distance of 2000 meters, is the gradient consistent? (2022)
A.
Yes
B.
No
C.
Not enough information
D.
Depends on the soil type
Solution
Gradient = Rise / Run = 2 m / 2000 m = 1:1000, so it is consistent.
Q. A river has a length of 150 km and a width of 50 m. If the average depth is 3 m, what is the approximate volume of water in the river in cubic meters?
A.
22500000
B.
2250000
C.
15000000
D.
30000000
Solution
Volume = Length × Width × Depth = 150000 m × 50 m × 3 m = 22500000 m³.
Q. A river has a width of 300 meters and a depth of 5 meters. What is the volume of water flowing through the river in one second if the flow speed is 2 m/s? (2020)
A.
3000 m³/s
B.
6000 m³/s
C.
1500 m³/s
D.
1200 m³/s
Solution
Volume = Width × Depth × Speed = 300 m × 5 m × 2 m/s = 3000 m³/s.
Q. A river is 300 m wide. If a person swims across the river at a speed of 2 m/s and the river flows at 1 m/s, how long will it take to cross the river? (2020)
A.
150 s
B.
100 s
C.
200 s
D.
300 s
Solution
Time = Distance / Speed. The effective speed across the river is 2 m/s. Time = 300 m / 2 m/s = 150 s.
