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Which of the following could be used to determine the total dissolved solids in a sample of muddy river water? (A) P and Q (B) R and S (C) P and R (D) Q and S - HSC - SSCE Chemistry - Question 5 - 2003 - Paper 1
Question 5
Which of the following could be used to determine the total dissolved solids in a sample of muddy river water? (A) P and Q (B) R and S (C) P and R (D) Q and S
Worked Solution & Example Answer:Which of the following could be used to determine the total dissolved solids in a sample of muddy river water? (A) P and Q (B) R and S (C) P and R (D) Q and S - HSC - SSCE Chemistry - Question 5 - 2003 - Paper 1
Step 1
Identify the methods
Answer
To determine the total dissolved solids in a sample of muddy river water, we need devices that can accurately filter and measure the solids. Analyzing the options:
- P: A filtration apparatus that can separate solids from liquids effectively.
- Q: A device designed for measuring dissolved solids.
- R: Could be used to isolate particles but may not provide precise measurements.
- S: This also helps segregate solids from the liquid sample.
From this analysis, P and Q would be essential for accurate measurement and separation of dissolved solids.
Step 2
Choose the correct options
Answer
Upon evaluating all options:
- Option A (P and Q) assists in measurement and filtration.
- Option B (R and S) lacks a measuring device.
- Option C (P and R) is incomplete because it lacks direct measurement utility.
- Option D (Q and S) pairs a measurement device with a filtering apparatus.
Thus, the best combination for determining the total dissolved solids is D: Q and S.