General Knowledge
Q. A soil sample contains 40% sand, 30% silt, and 30% clay. What is the percentage of clay in the sample? (2022)
A.
30%
B.
40%
C.
50%
D.
20%
Show solution
Solution
The percentage of clay is given as 30%.
Correct Answer: A — 30%
Learn More →
Q. A soldier runs 12 km in 1 hour and 15 minutes. What is his speed in km/h? (2023)
A.
8 km/h
B.
9 km/h
C.
10 km/h
D.
11 km/h
Show solution
Solution
Time = 1 hour + 15 minutes = 1.25 hours. Speed = Distance / Time = 12 km / 1.25 h = 9.6 km/h.
Correct Answer: B — 9 km/h
Learn More →
Q. A soldier runs 5 km in 30 minutes. What is his speed in km/h? (2019)
A.
8 km/h
B.
10 km/h
C.
12 km/h
D.
15 km/h
Show solution
Solution
Speed = Distance / Time = 5 km / (30/60) h = 10 km/h
Correct Answer: B — 10 km/h
Learn More →
Q. A sound wave has a frequency of 440 Hz. What is its period?
A.
0.00227 s
B.
0.00455 s
C.
0.01 s
D.
0.1 s
Show solution
Solution
The period (T) is the inverse of frequency (f), T = 1/f = 1/440 ≈ 0.00227 s.
Correct Answer: B — 0.00455 s
Learn More →
Q. A stone is thrown vertically upwards with a speed of 15 m/s. How long will it take to reach the highest point? (Take g = 10 m/s²) (2023)
A.
1.5 s
B.
2 s
C.
3 s
D.
4 s
Show solution
Solution
Time to reach highest point = u/g = 15/10 = 1.5 s.
Correct Answer: B — 2 s
Learn More →
Q. A student must score at least 60% to pass an exam. If the exam is out of 250 marks, what is the minimum score required to pass? (2019)
A.
140
B.
150
C.
160
D.
170
Show solution
Solution
Minimum Score = (60 / 100) * 250 = 150.
Correct Answer: B — 150
Learn More →
Q. A student needs to score at least 75% to qualify for a scholarship. If the total marks are 400, what is the minimum score required? (2022)
A.
250
B.
300
C.
350
D.
375
Show solution
Solution
Minimum Score = (75 / 100) * 400 = 300.
Correct Answer: B — 300
Learn More →
Q. A student needs to score at least 80% in an exam of 500 marks to get a scholarship. What is the minimum score required? (2023)
A.
350
B.
400
C.
450
D.
500
Show solution
Solution
Minimum Score = (80 / 100) * 500 = 400.
Correct Answer: B — 400
Learn More →
Q. A student received a prize for scoring 92 marks out of 120. What is the percentage of marks? (2021)
A.
75%
B.
76.67%
C.
78.33%
D.
80%
Show solution
Solution
Percentage = (92 / 120) * 100 = 76.67%.
Correct Answer: B — 76.67%
Learn More →
Q. A student received a scholarship for scoring 95 marks out of 150 in an exam. What is the percentage of marks? (2020)
A.
60%
B.
65%
C.
70%
D.
75%
Show solution
Solution
Percentage = (95 / 150) * 100 = 63.33%.
Correct Answer: C — 70%
Learn More →
Q. A student received a scholarship of $1200. If he spends 30% of it on tuition fees, how much does he spend?
A.
$300
B.
$360
C.
$400
D.
$450
Show solution
Solution
Amount spent on tuition fees = 30% of 1200 = 0.3 * 1200 = $360.
Correct Answer: B — $360
Learn More →
Q. A student received an award for scoring the highest marks in a subject. If he scored 95 out of 100, what is his score in percentage?
A.
90%
B.
92%
C.
95%
D.
98%
Show solution
Solution
Percentage = (95 / 100) * 100 = 95%
Correct Answer: C — 95%
Learn More →
Q. A student won a scholarship of $2500. If he donates 10% of it to charity, how much does he donate?
A.
$200
B.
$250
C.
$300
D.
$350
Show solution
Solution
Amount donated = 10% of 2500 = 0.1 * 2500 = $250.
Correct Answer: B — $250
Learn More →
Q. A student won an award worth $5000. If he spends 20% of it on books, how much money does he have left?
A.
$4000
B.
$4500
C.
$3500
D.
$3000
Show solution
Solution
Amount spent on books = 20% of 5000 = 0.2 * 5000 = $1000. Amount left = 5000 - 1000 = $4000.
Correct Answer: B — $4500
Learn More →
Q. A swimmer swims 200 meters in 2 minutes. What is his speed in kilometers per hour? (2021)
A.
6 km/h
B.
5 km/h
C.
4 km/h
D.
3 km/h
Show solution
Solution
Speed = Distance / Time = 200 meters / 120 seconds = 1.67 m/s. To convert to km/h, multiply by 3.6: 1.67 * 3.6 = 6 km/h.
Correct Answer: A — 6 km/h
Learn More →
Q. A tank can hold 500 liters of water. If it is filled at a rate of 25 liters per minute, how long will it take to fill the tank? (2020)
A.
15 min
B.
20 min
C.
25 min
D.
30 min
Show solution
Solution
Time = Total Volume / Rate = 500 liters / 25 liters/min = 20 min
Correct Answer: D — 30 min
Learn More →
Q. A tennis player won 60% of his matches. If he played 50 matches, how many matches did he win? (2023)
Show solution
Solution
Number of matches won = 60% of 50 = 0.6 * 50 = 30.
Correct Answer: A — 30
Learn More →
Q. A train leaves a station at 2 PM traveling at 80 km/h. If it travels for 3 hours, at what time will it arrive at the next station? (2022)
A.
4 PM
B.
5 PM
C.
6 PM
D.
7 PM
Show solution
Solution
Departure time = 2 PM, travel time = 3 hours. Arrival time = 2 PM + 3 hours = 5 PM.
Correct Answer: C — 6 PM
Learn More →
Q. A train travels 120 km at a speed of 60 km/h and then 180 km at 90 km/h. What is the average speed for the entire journey? (2019)
A.
72 km/h
B.
75 km/h
C.
80 km/h
D.
85 km/h
Show solution
Solution
Total time = (120/60) + (180/90) = 2 + 2 = 4 hours. Total distance = 120 + 180 = 300 km. Average speed = Total distance / Total time = 300/4 = 75 km/h.
Correct Answer: C — 80 km/h
Learn More →
Q. A train travels at a speed of 90 km/h. How far will it travel in 2.5 hours? (2019)
A.
200 km
B.
225 km
C.
250 km
D.
300 km
Show solution
Solution
Distance = Speed * Time = 90 km/h * 2.5 h = 225 km.
Correct Answer: B — 225 km
Learn More →
Q. A train travels at a speed of 90 km/h. How long will it take to cover a distance of 270 km? (2021)
A.
2.5 hours
B.
3 hours
C.
3.5 hours
D.
4 hours
Show solution
Solution
Time = Distance / Speed = 270 km / 90 km/h = 3 hours.
Correct Answer: B — 3 hours
Learn More →
Q. A train travels from station A to station B, a distance of 300 km, at a speed of 75 km/h. How long does the journey take? (2019)
A.
3 hours
B.
4 hours
C.
5 hours
D.
6 hours
Show solution
Solution
Time = Distance / Speed = 300 km / 75 km/h = 4 hours.
Correct Answer: C — 5 hours
Learn More →
Q. A vaccine is 80% effective in preventing a disease. If 1000 people are vaccinated, how many are expected to still contract the disease? (2019)
A.
100
B.
200
C.
300
D.
400
Show solution
Solution
If the vaccine is 80% effective, then 20% will still contract the disease. Therefore, expected cases = 20% of 1000 = 200.
Correct Answer: A — 100
Learn More →
Q. A vehicle accelerates from rest at a rate of 2 m/s². How far does it travel in 10 seconds? (2020)
A.
50 m
B.
100 m
C.
150 m
D.
200 m
Show solution
Solution
Using the formula s = ut + (1/2)at²; s = 0 + (1/2)(2)(10²) = 100 m.
Correct Answer: B — 100 m
Learn More →
Q. An object is placed 30 cm in front of a convex lens of focal length 15 cm. What is the position of the image formed? (2020)
A.
10 cm
B.
15 cm
C.
20 cm
D.
25 cm
Show solution
Solution
Using the lens formula 1/f = 1/v - 1/u, where u = -30 cm and f = 15 cm, we find v = 10 cm.
Correct Answer: D — 25 cm
Learn More →
Q. An object is thrown vertically upwards with a speed of 20 m/s. How high will it rise before coming to rest? (Take g = 10 m/s²) (2020)
A.
20 m
B.
40 m
C.
50 m
D.
80 m
Show solution
Solution
Using the formula h = (u²)/(2g) = (20²)/(2 × 10) = 20 m.
Correct Answer: B — 40 m
Learn More →
Q. An object moves in a straight line with a uniform speed of 10 m/s. How far will it travel in 15 seconds? (2023)
A.
100 m
B.
120 m
C.
150 m
D.
200 m
Show solution
Solution
Distance = Speed × Time = 10 m/s × 15 s = 150 m.
Correct Answer: C — 150 m
Learn More →
Q. An object moves in a straight line with a uniform speed of 30 m/s. How far will it travel in 15 seconds? (2022)
A.
300 m
B.
450 m
C.
600 m
D.
750 m
Show solution
Solution
Distance = Speed × Time = 30 m/s × 15 s = 450 m.
Correct Answer: C — 600 m
Learn More →
Q. At which latitude does the sun appear directly overhead at noon during the equinox? (2021)
A.
0 degrees
B.
23.5 degrees North
C.
23.5 degrees South
D.
90 degrees
Show solution
Solution
At the equinox, the sun is directly overhead at the equator, which is at 0 degrees latitude.
Correct Answer: A — 0 degrees
Learn More →
Q. At which longitude would the local time be 3 hours ahead of GMT?
A.
45°E
B.
60°E
C.
75°E
D.
90°E
Show solution
Solution
Each hour corresponds to 15 degrees. Therefore, 3 hours ahead means 3 * 15 = 45 degrees east of GMT, which is 45°E.
Correct Answer: C — 75°E
Learn More →
Showing 61 to 90 of 505 (17 Pages)
