Q. If a river basin has an area of 2000 km² and receives an average rainfall of 800 mm per year, what is the total volume of water received by the basin in cubic meters? (2000)
A.
1600000000
B.
16000000
C.
160000000
D.
16000000000
Solution
Volume = Area × Rainfall = 2000 km² × 800 mm = 2000 × 10^6 m² × 0.8 m = 1600000000 m³.
Q. If a river basin has an area of 500 km² and receives an average rainfall of 800 mm annually, what is the total volume of water received by the basin in cubic meters? (2022)
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. If a river has a discharge of 500 cubic meters per second and the cross-sectional area of the river is 100 square meters, what is the velocity of the river?
A.
2 m/s
B.
5 m/s
C.
10 m/s
D.
20 m/s
Solution
Velocity = Discharge / Area = 500 m³/s / 100 m² = 5 m/s.
Q. If a river has a sediment transport capacity of 200 kg/m³ and flows at a rate of 10 m³/s, what is the total sediment transported in one hour? (2000)
A.
72000 kg
B.
60000 kg
C.
360000 kg
D.
120000 kg
Solution
Total sediment = Sediment capacity × Flow rate × Time = 200 kg/m³ × 10 m³/s × 3600 s = 7200000 kg.
Q. If a river is 300 meters wide and the current flows at 2 m/s, how long will it take a swimmer to cross the river if he swims at a speed of 1 m/s perpendicular to the current?
A.
300 seconds
B.
150 seconds
C.
200 seconds
D.
100 seconds
Solution
Time to cross = Width / Speed across = 300 m / 1 m/s = 300 seconds.
General Knowledge (NDA) is a crucial component of various competitive exams, including the NDA entrance test. Mastering this subject not only enhances your awareness of current affairs but also significantly boosts your exam scores. Practicing MCQs and objective questions helps you identify important topics and improves your ability to tackle exam questions effectively. By engaging with practice questions, you can solidify your understanding and prepare thoroughly for your upcoming exams.
What You Will Practise Here
Current Affairs: National and International Events
History: Key Dates and Important Figures
Geography: Physical and Political Maps
Indian Polity: Constitution and Governance
Economics: Basic Concepts and Terminology
Science: Fundamental Principles and Discoveries
General Awareness: Sports, Awards, and Recognitions
Exam Relevance
General Knowledge is a significant section in various exams such as CBSE, State Boards, NEET, and JEE. In these assessments, you can expect questions that test your understanding of historical events, geographical facts, and current affairs. Common question patterns include multiple-choice questions that require you to select the correct answer from a set of options, making it essential to be well-prepared with important General Knowledge (NDA) questions for exams.
Common Mistakes Students Make
Overlooking current affairs, assuming they are less important.
Confusing similar historical events or dates.
Neglecting to revise basic geographical concepts.
Misunderstanding key terms in Indian polity and governance.
Failing to connect economic principles with real-world scenarios.
FAQs
Question: What are the best ways to prepare for General Knowledge (NDA)? Answer: Regularly read newspapers, follow current affairs, and practice MCQs to enhance your knowledge.
Question: How can I improve my speed in answering General Knowledge questions? Answer: Time yourself while practicing and focus on understanding concepts rather than rote memorization.
Start your journey towards mastering General Knowledge (NDA) today! Solve practice MCQs and test your understanding to ensure you are well-prepared for your exams. Every question you tackle brings you one step closer to success!
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