Selected MCQ

Current Question
Water from one container fills otheRs. What is the total volume?
  • A. 648
  • B. 888
  • C. 928
  • D. 1184
Correct Answer: D
Explanation:
Conservation of volume.
Related Question 1
A water tank is two-fifths full. Pipe A fills it in 10 minutes, and pipe B empties it. What is the required time?
  • A. 6 min to empty
  • B. 6 min to fill
  • C. 9 min to empty
  • D. 9 min to fill
Correct Answer: A
Explanation:
Net rate depends on the stronger pipe; here, emptying dominates.
Related Question 2
A tap fills a tank in 6 houRs. After half filled, three more taps are opened. Total time is ____.
  • A. 3 hr 15 min
  • B. 3 hr 45 min
  • C. 4 hr
  • D. 4 hr 15 min
Correct Answer: B
Explanation:
Rate increases after half fill.
Related Question 3
A solid consists of a cylinder with a cone on top. If dimensions are given, what is total volume?
  • A. 2h
  • B. 4h
  • C. 2h/3
  • D. 3h/2
Correct Answer: C
Explanation:
Volume = cylinder + cone.
Related Question 4
A river 2 m deep and 45 m wide flows at 3 km/h. What volume of water flows per minute?
  • A. 4500 m³
  • B. 27000 m³
  • C. 3000 m³
  • D. 2700 m³
Correct Answer: A
Explanation:
Volume = area × velocity ⇒ 4500 m³/min.
Related Question 5
Total area of 64 squares is 400 cm². Find the side of the big square.
  • A. 17 cm
  • B. 20 cm
  • C. 23 cm
  • D. 26 cm
Correct Answer: D
Explanation:
Total side calculation.