SSC CGL Boats and Streams Practice Test 6
15 SSC CGL boats and streams questions with chapter-wise explanations and exam-style options.
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SSC CGL Boats and Streams Practice Test 6
15 SSC CGL boats and streams questions with chapter-wise explanations and exam-style options.
Preview all 14 questions in SSC CGL Boats and Streams Practice Test 6 (no login required)
- Boats and Streams
1. At 70 km/h for 2 hours, distance covered is:
- A. 120 km
- B. 130 km
- C. 140 km (Correct)
- D. 150 km
Explanation: Distance = speed x time.
- Boats and Streams
2. Time taken to travel 180 km at 60 km/h is:
- A. 2 hours
- B. 2.5 hours
- C. 3 hours (Correct)
- D. 3.5 hours
Explanation: Time = distance / speed.
- Boats and Streams
3. A person covers equal distances at 30 km/h and 50 km/h. Average speed is:
- A. 36 km/h
- B. 37.5 km/h (Correct)
- C. 40 km/h
- D. 42 km/h
Explanation: Average speed for equal distances = 2ab/(a+b).
- Boats and Streams
4. A 160 m train crosses a pole in 8 seconds. Its speed is:
- A. 18 m/s
- B. 20 m/s (Correct)
- C. 22 m/s
- D. 24 m/s
Explanation: Speed = 160/8.
- Boats and Streams
5. A 180 m train at 54 km/h crosses a platform 120 m long in:
- A. 18 s
- B. 20 s (Correct)
- C. 22 s
- D. 24 s
Explanation: 54 km/h = 15 m/s. Total distance = 300 m.
- Boats and Streams
6. Boat speed in still water is 16 km/h and stream speed is 3 km/h. Upstream speed is:
- A. 10 km/h
- B. 11 km/h
- C. 12 km/h
- D. 13 km/h (Correct)
Explanation: Upstream = still water - stream.
- Boats and Streams
7. Downstream speed is 20 km/h and upstream speed is 12 km/h. Speed in still water is:
- A. 14 km/h
- B. 15 km/h
- C. 16 km/h (Correct)
- D. 17 km/h
Explanation: Still water speed = (20 + 12)/2.
- Boats and Streams
8. Two trains run opposite each other at 45 km/h and 63 km/h and cross in 10 seconds. Total length is:
- A. 250 m
- B. 275 m
- C. 300 m (Correct)
- D. 325 m
Explanation: Relative speed = 108 km/h = 30 m/s.
- Boats and Streams
9. 90 km/h equals:
- A. 20 m/s
- B. 25 m/s (Correct)
- C. 30 m/s
- D. 35 m/s
Explanation: Multiply by 5/18.
- Boats and Streams
10. A person travels 60 km at 30 km/h and returns at 20 km/h. Average speed is:
- A. 22 km/h
- B. 24 km/h (Correct)
- C. 25 km/h
- D. 26 km/h
Explanation: Average speed for equal distances = 2ab/(a+b).
- Boats and Streams
11. If speed increases by 20%, time decreases by:
- A. 15%
- B. 16.67% (Correct)
- C. 18%
- D. 20%
Explanation: New time = 1/1.2 of old time.
- Boats and Streams
12. A 100 m train crosses a man standing on the platform in 5 seconds. Speed is:
- A. 18 km/h
- B. 54 km/h
- C. 72 km/h (Correct)
- D. 90 km/h
Explanation: Speed = 100/5 = 20 m/s = 72 km/h.
- Boats and Streams
13. A boat covers 24 km downstream in 2 hours and upstream in 3 hours. Speed in still water is:
- A. 8 km/h
- B. 9 km/h
- C. 10 km/h (Correct)
- D. 11 km/h
Explanation: Downstream = 12, upstream = 8, so still water speed = 10.
- Boats and Streams
14. A runner covers 600 m in 75 seconds. Speed is:
- A. 6 m/s
- B. 7 m/s
- C. 8 m/s (Correct)
- D. 9 m/s
Explanation: 600/75 = 8 m/s.