Pipes and Cisterns MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Pipes and Cisterns, a fundamental topic in the field of Aptitude. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Pipes and Cisterns MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Pipes and Cisterns mcq questions that explore various aspects of Pipes and Cisterns problems. Each MCQ is crafted to challenge your understanding of Pipes and Cisterns principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Aptitude tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Pipes and Cisterns MCQs are your pathway to success in mastering this essential Aptitude topic.

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Pipes and Cisterns MCQs | Page 1 of 2

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Q1.
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

Discuss
Answer: (b).6/11
Q2.
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(13/17) hours

b.

2(8/11) hours

c.

3(9/17) hours

d.

4(1/2) hours

Discuss
Answer: (c).3(9/17) hours
Q3.
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2(1/3) hours to fill the tank. The leak can drain all the water of the tank in:

a.

4(1/3) hours

b.

7 hours

c.

8 hours

d.

14 hours

Discuss
Answer: (d).14 hours
Q4.
Two pipes A and B can fill a cistern in 37(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.

5 min.

b.

9 min.

c.

10 min.

d.

15 min.

Discuss
Answer: (b).9 min.
Q5.
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.

6 hours

b.

10 hours

c.

15 hours

d.

30 hours

Discuss
Answer: (c).15 hours
Q6.
Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

a.

60 gallons

b.

100 gallons

c.

120 gallons

d.

180 gallons

Discuss
Answer: (c).120 gallons
Q7.
A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

a.

20 hours

b.

25 hours

c.

35 hours

d.

Cannot be determined

Discuss
Answer: (c).35 hours
Q8.
Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?

a.

1 hour

b.

2 hours

c.

6 hours

d.

8 hours

Discuss
Answer: (c).6 hours
Q9.
Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?

a.

12 min

b.

15 min

c.

25 min

d.

50 min

Discuss
Answer: (a).12 min
Q10.
Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?

a.

10 min. 20 sec.

b.

11 min. 45 sec.

c.

12 min. 30 sec.

d.

14 min. 40 sec.

Discuss
Answer: (d).14 min. 40 sec.
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