MCQOPTIONS
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MCQOPTIONS
This section includes 71 Mcqs, each offering curated multiple-choice questions to sharpen your General Aptitude knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two pipes A and B can fill a cistern in 37 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after: |
| A. | 5 min. |
| B. | 9 min. |
| C. | 10 min. |
| D. | 15 min. |
| Answer» C. 10 min. | |
| 2. |
How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously? I. A can fill the tank in 16 minutes. II. B can empty the full tank in 8 minutes. |
| A. | I alone sufficient while II alone not sufficient to answer |
| B. | II alone sufficient while I alone not sufficient to answer |
| C. | Either I or II alone sufficient to answer |
| D. | Both I and II are not sufficient to answer |
| E. | Both I and II are necessary to answer |
| Answer» F. | |
| 3. |
If both the pipes are opened, how many hours will be taken to fill the tank? I. The capacity of the tank is 400 litres. II. The pipe A fills the tank in 4 hours. III. The pipe B fills the tank in 6 hours. |
| A. | Only I and II |
| B. | Only II and III |
| C. | All I, II and III |
| D. | Any two of the three |
| E. | Even with all the three statements, answer cannot be given. |
| Answer» C. All I, II and III | |
| 4. |
How much time will the leak take to empty the full cistern? I. The cistern is normally filled in 9 hours. II. It takes one hour more than the usual time to fill the cistern because of la leak in the bottom. |
| A. | I alone sufficient while II alone not sufficient to answer |
| B. | II alone sufficient while I alone not sufficient to answer |
| C. | Either I or II alone sufficient to answer |
| D. | Both I and II are not sufficient to answer |
| E. | Both I and II are necessary to answer |
| Answer» F. | |
| 5. |
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in: |
| A. | 4 1 hours 3 |
| B. | 7 hours |
| C. | 8 hours |
| D. | 14 hours |
| Answer» E. | |
| 6. |
Two pipes A and B can fill a tank with water in 30 minutes and 45 minutes respectively. The third pipe C can empty the tank in 36 minutes. First A and B are opened. After 12 minutes C is opened. Total time ( in minutes ) in which the tank will be filled up is - |
| A. | 2 minutes |
| B. | 4 minutes |
| C. | 0 minutes |
| D. | 6 minutes |
| Answer» C. 0 minutes | |
| 7. |
Pipe A can fill the tank in 8 hours and pipe B can fill it in 12 hours. If pipe A is opened at 7:00 AM and pipe B is opened at 9:00 AM, then at what time will the tank be full ? |
| A. | 2:00 PM |
| B. | 2:30 PM |
| C. | 1:48 PM |
| D. | 2:36 PM |
| Answer» E. | |
| 8. |
Pipe A can fill a tank in 4 hours and pipe B can fill it 6 hours. If they are opened on alternate hours and if pipe A is opened first then in how many hours, the tank shall be full ? |
| A. | ${\text{4}}\frac{1}{2}$$ hours |
| B. | ${\text{4}}\frac{2}{3}$$ hours |
| C. | ${\text{3}}\frac{1}{2}$$ hours |
| D. | ${\text{3}}\frac{1}{4}$$ hours |
| Answer» C. ${\text{3}}\frac{1}{2}$$ hours | |
| 9. |
Having the same capacity 9 taps fill up a water tank in 20 minutes. How many taps of the same capacity are required to fill up the same water tank in 15 minutes ? |
| A. | 0 taps |
| B. | 2 taps |
| C. | 5 taps |
| D. | 8 taps |
| Answer» C. 5 taps | |
| 10. |
Three taps A, B, C can fill an overhead tank in 4, 6 and 12 hours respectively. How long would the three taps take to fill the tank if all of them are opened together ? |
| A. | hours |
| B. | hours |
| C. | hours |
| D. | hours |
| Answer» B. hours | |
| 11. |
A water tap fills a tub in 'p' hours and a sink at the bottom empties it in 'q' hours. If p < q and both tap and sink are opened the tank is filled in 'r' hours, then the relation between p, q, r : |
| A. | $\frac{1}{r} = \frac{1}{p} + \frac{1}{q}$$ |
| B. | $\frac{1}{r} = \frac{1}{p} - \frac{1}{q}$$ |
| C. | $r{\text{=}}p{\text{ }} + {\text{ }}q$$ |
| D. | ${\text{ }}r{\text{ }} = {\text{ }}p{\text{ }} - {\text{ }}q$$ |
| Answer» C. $r{\text{=}}p{\text{ }} + {\text{ }}q$$ | |
| 12. |
A pipe can fill a tank in x hours and another can empty it in y hours. In how many hours they together fill it in ( y > x) ? |
| A. | x - y) hours |
| B. | y - x) hours |
| C. | $\left( {\frac{{xy}}{{x - y}}} \right)\,{\text{hours}}$$ |
| D. | $\left( {\frac{{xy}}{{y - x}}} \right){\text{hours}}$$ |
| Answer» E. | |
| 13. |
A water tank can be filled by a tap in 30 minutes and another tap can fill it in 60 minutes. If both taps are kept open for 5 minutes and then the first tap is closed, how long will it take foe the tank to be filled ? |
| A. | 0 minutes |
| B. | 5 minutes |
| C. | 0 minutes |
| D. | 5 minutes |
| Answer» E. | |
| 14. |
A tank can be filled by pipe A in 2 hours and pipe B in 6 hours. At 10 A.M. pipe A was opened. At what time will the tank be filled if pipe B is opened at 11 A.M. ? |
| A. | 2.45 A.M. |
| B. | P.M. |
| C. | 1.45 A.M. |
| D. | 2 P.M. |
| Answer» D. 2 P.M. | |
| 15. |
A tap can completely fill a water tank in 8 hours. The water tank has a hole in it through which the water leaks out. The leakage will cause the full water tank to get empty in 12 hours. How much time will it take for the tap the the tank completely with the hole? |
| A. | 6 hours |
| B. | 8 hours |
| C. | 4 hours |
| D. | one of these |
| Answer» D. one of these | |
| 16. |
Two pipes can fill a tank in 12 hours and 16 hours respectively. A third pipe can empty the tank in 30 hours. If all three pipes are opened and functions simultaneously, how much time will the tank take to be full?( in hours ) |
| A. | $10\frac{4}{9}$$ |
| B. | $9\frac{1}{2}$$ |
| C. | $8\frac{8}{9}$$ |
| D. | $7\frac{2}{9}$$ |
| Answer» D. $7\frac{2}{9}$$ | |
| 17. |
A tank is 7 metre long and 4 meter wide wide. At what speed should water run through a pipe 5 cm broad and 4 cm deep so that in 6 hours and 18 minutes water level in the tank rises by 4.5 meter? |
| A. | 0 km/hours |
| B. | 2 km/hours |
| C. | km/hours |
| D. | one of these |
| Answer» B. 2 km/hours | |
| 18. |
An outlet pipe can empty a cistern in 3 hours. In what time will empty $$\frac{2}{3}$$ of the cistern? |
| A. | hours |
| B. | hours |
| C. | hours |
| D. | hours |
| Answer» D. hours | |
| 19. |
Two pipes can fill a tank in 40 and 48 minutes respectively and a waste pipe can empty 3 gallons per minutes. All the three pipes working together can fill the tank in 30 minutes, The capacity of the tank is- |
| A. | 0 gallons |
| B. | 20 gallons |
| C. | 80 gallons |
| D. | 40 gallons |
| Answer» E. | |
| 20. |
A swimming pool is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the pool in the same time during which the pool is filled by the third pipe alone. The second pipe fills the pool 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is? |
| A. | hours |
| B. | 0 hours |
| C. | 5 hours |
| D. | 0 hours |
| Answer» D. 0 hours | |
| 21. |
One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in- |
| A. | 1 min |
| B. | 08 min |
| C. | 44 min |
| D. | 92 min |
| Answer» D. 92 min | |
| 22. |
A pump can fill a tank with water in 2 hours. Because of a leak, it took $$2\frac{1}{3}$$ hours to to fill the tank. The leak can drain all the water of the tank in? |
| A. | $4\frac{1}{3}$$ hours |
| B. | hours |
| C. | hours |
| D. | 4 hours |
| Answer» E. | |
| 23. |
A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minute in the tank , the leak takes 15 hours to empty the tank. How many litres of water does the tank hold? |
| A. | 400 litters |
| B. | 500 litters |
| C. | 200 litters |
| D. | 200 litters |
| Answer» E. | |
| 24. |
Three pipes P, Q and R can separately fill a cistern in 4, 8 and 12 hours respectively. Another pipe S can empty the completely filled cistern in 10 hours. Which of the following arrangements will fill the empty cistern in less time than others? |
| A. | alone is open |
| B. | , R and S are open |
| C. | and S are open |
| D. | , Q and S are open |
| Answer» E. | |
| 25. |
Two pipe A and B can fill a water tank in 20 and 24 minutes respectively and a third pipe C can empty at the rate of 3 gallons per minute. If A, B and C are open together to fill the tank in 15 minutes, find the capacity of tank? |
| A. | 80 gallons |
| B. | 50 gallons |
| C. | 20 gallons |
| D. | 0 gallons |
| Answer» D. 0 gallons | |
| 26. |
A vessel has three pipes connected to it , two to supply liquid and one to draw liquid. The first alone can fill the vessel in $$4\frac{1}{2}$$ hours, the second in 3 hours and the third can empty it in $$1\frac{1}{2}$$ hours. If all the pipes are opened simultaneously when the vessel is half full, how soon will it be emptied? |
| A. | $4\frac{1}{2}$$ hours |
| B. | $5\frac{1}{2}$$ hours |
| C. | $6\frac{1}{2}$$ hours |
| D. | one of these |
| Answer» B. $5\frac{1}{2}$$ hours | |
| 27. |
A pipe can fill a tank in 3 hours. There are two outlet pipes from the tank which can empty it in 7 and 10 hours respectively. If all the three pipes are opened simultaneously, then the tank will be filled in - |
| A. | hours |
| B. | hours |
| C. | 0 hours |
| D. | 1 hours |
| Answer» E. | |
| 28. |
A tank with capacity T liters is empty. If water flows into the tank from pipe X at the rate of x liters per minute and water is pumped out by Y at the rate of y liters per minute and x > y, then how many minutes will the tank be filled? |
| A. | x - y) 60 T minutes |
| B. | T - x) minutes |
| C. | $\frac{{\text{T}}}{{{\text{x}} - {\text{y}}}}$$minutes |
| D. | $\frac{{\text{T}}}{{{\text{y}} - {\text{x}}}}$$minutes |
| Answer» D. $\frac{{\text{T}}}{{{\text{y}} - {\text{x}}}}$$minutes | |
| 29. |
A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely? |
| A. | hrs 15 min |
| B. | hrs 45 min |
| C. | hrs |
| D. | hrs 15 min |
| Answer» C. hrs | |
| 30. |
$$\frac{3}{4}$$ part of the tank is full of water. When 30 litres of water is taken out, the tank becomes empty. The capacity of the tank is - |
| A. | 6 liters |
| B. | 2 liters |
| C. | 0 liters |
| D. | 8 liters |
| Answer» D. 8 liters | |
| 31. |
Two pipe can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all the three pipes are kept open, then the cistern will be filled in- |
| A. | hours |
| B. | hours |
| C. | 0 hours |
| D. | 2 hours |
| Answer» E. | |
| 32. |
A pipe can fill a tank with water in 3 hours. Due to leakage in bottom, it takes $$3\frac{1}{2}$$ hours to fill it. In what time the leak will empty the completely filled tank? |
| A. | 2 hours |
| B. | 1 hours |
| C. | $6\frac{1}{2}$$ hours |
| D. | $10\frac{1}{2}$$ hours |
| Answer» C. $6\frac{1}{2}$$ hours | |
| 33. |
Wateris continuously supplied from a reservoir to a locality at the steady rate of 10000 liters per hours. When delivery exceeds demand the excess water is stored in a tank. If the demand for 8 consecutive three hour periods is 10000, 10000, 45000, 25000, 40000, 15000, 60000 and 35000 liters respectively, what will be the minimum capacity required of the water tank (in thousand liters)to meet the demand and avoid any wastage? |
| A. | 0 |
| B. | 0 |
| C. | 0 |
| D. | 0 |
| Answer» D. 0 | |
| 34. |
A tap drips at a rate of one drop/second. 600 drops make 100 ml. The number of liters wasted in 300 days is - |
| A. | 320000 liters |
| B. | 32000 liters |
| C. | 3200 liters |
| D. | 320 liters |
| Answer» E. | |
| 35. |
Three pipes A, B and C can fill a tank in 6 hours, 9 hours and 12 hours respectively. B and C are opened for half an hour, then A is also opened. The time taken by the three pipes together to fill the remaining part of the tank is - |
| A. | hours |
| B. | hours |
| C. | ${\text{2}}\frac{1}{2}$$ hours |
| D. | ${\text{3}}\frac{1}{2}$$ hours |
| Answer» D. ${\text{3}}\frac{1}{2}$$ hours | |
| 36. |
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is: |
| A. | hours |
| B. | 0 hours |
| C. | 5 hours |
| D. | 0 hours |
| Answer» D. 0 hours | |
| 37. |
Two pipes A and B can fill a cistern in $$37\frac{1}{2}$$ minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after: |
| A. | min. |
| B. | min. |
| C. | 0 min. |
| D. | 5 min. |
| Answer» C. 0 min. | |
| 38. |
A pump can fill a tank with water in 2 hours. Because of a leak, it took $$2\frac{1}{3}$$ hours to fill the tank. The leak can drain all the water of the tank in: |
| A. | $4\frac{1}{3}$$ hours |
| B. | hours |
| C. | hours |
| D. | 4 hours |
| Answer» E. | |
| 39. |
Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in: |
| A. | $1\frac{{13}}{{17}}$$ hours |
| B. | $2\frac{8}{{11}}$$ hours |
| C. | $3\frac{9}{{17}}$$ hours |
| D. | $4\frac{1}{2}$$ hours |
| Answer» D. $4\frac{1}{2}$$ hours | |
| 40. |
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes? |
| A. | $\frac{5}{{11}}$$ |
| B. | $\frac{6}{{11}}$$ |
| C. | $\frac{7}{{11}}$$ |
| D. | $\frac{8}{{11}}$$ |
| Answer» C. $\frac{7}{{11}}$$ | |
| 41. |
Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in: |
| A. | 6 hours |
| B. | 6 2 hours 3 |
| C. | 7 hours |
| D. | 7 1 hours 2 |
| Answer» D. 7 1 hours 2 | |
| 42. |
Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is: |
| A. | 10 |
| B. | 12 |
| C. | 14 |
| D. | 16 |
| Answer» D. 16 | |
| 43. |
Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P,Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes? |
| A. | 5 11 |
| B. | 6 11 |
| C. | 7 11 |
| D. | 8 11 |
| Answer» C. 7 11 | |
| 44. |
Pipe A can fill the tank in 60 minutes while Pipe B does it in 40 minutes. If the tank is empty and Pipe B is opened for the first half while both Pipe A and B are opened for the second half, how long will it take to fill the empty tank? |
| A. | 15 minutes |
| B. | 20 minutes |
| C. | 27.5 minutes |
| D. | 30 minutes |
| Answer» E. | |
| 45. |
There are two taps to fill a tank. Pipe A is three times faster than Pipe B. Both the pipes opened together can fill the tank in 36 minutes. How long will the slower pipe take to fill the tank alone? |
| A. | 81 minutes |
| B. | 108 minutes |
| C. | 144 minutes |
| D. | 192 minutes |
| Answer» D. 192 minutes | |
| 46. |
Three inlets P, Q and R take 6 hours to fill a cistern. After being open for 2 hours together, inlet R develops a fault and has to be closed. P and Q fill the remaining cistern in 7 hours. How much time would R take to fill the cistern alone? |
| A. | 10 hours |
| B. | 12 hours |
| C. | 14 hours |
| D. | 16 hours |
| Answer» D. 16 hours | |
| 47. |
Consider the following: i. There are three pipes to fill a tank. ii. Time taken by Pipe 1 and Pipe 2 together to fill the tank is equal to the time taken by Pipe 3 alone. iii. Pipe 2 alone takes 5 hours less than Pipe 1 and 4 hours more than Pipe 3. How much time would Pipe 1 take to fill the tank alone? |
| A. | 6 hours |
| B. | 10 hours |
| C. | 15 hours |
| D. | 30 hours |
| Answer» D. 30 hours | |
| 48. |
Tap A and B can fill a pool together in 4 hours. If opened alone, B would take 6 hours more than A to fill the pool. How long will A take to fill the pool alone? |
| A. | 1 hour |
| B. | 2 hours |
| C. | 6 hours |
| D. | 8 hours |
| Answer» D. 8 hours | |
| 49. |
A tap can completely fill a tank in 16 hours. However, there is an unnoticed leakage at the bottom which makes the tank fill up in 24 hours. How long will the leakage take to completely empty a full tank? |
| A. | 36 hours |
| B. | 42 hours |
| C. | 44 hours |
| D. | 48 hours |
| Answer» E. | |
| 50. |
Two inlets A and B can fill a cistern in 45 and 440 minutes respectively. They were opened simultaneously but A was turned off in some time while B filled the remaining cistern alone in 23 minutes. Find the time after which inlet A was closed. |
| A. | 7 minutes |
| B. | 8 minutes |
| C. | 9 minutes |
| D. | 11 minutes |
| Answer» D. 11 minutes | |