O Levels Chemistry (5070)•5070/11/M/J/22

Explanation
Fastest method for accurate liquid volume transfer
Steps:
- Determine total volume: 100 cm³ per beaker × 50 beakers = 5000 cm³.
- Evaluate operations per beaker: fewer steps mean faster total time.
- Compare tools: burette and pipette are slow due to multiple fillings; syringe is unsuitable for liquids.
- Select single-step liquid tool: measuring cylinder delivers 100 cm³ directly.
Why D is correct:
- A measuring cylinder is designed for quick, accurate liquid measurement and transfer in one pour, minimizing time per beaker.
Why the others are wrong:
- A: Requires two fillings per beaker, doubling operations and time for 50 beakers.
- B: Gas syringes are for gases, not liquids like water, making transfer impractical or inaccurate.
- C: Needs four fillings per beaker, quadrupling operations and significantly slowing the process.
Final answer: D
Topic: Experimental design
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