Mercury is 13.6 times as dense as water.
Correct answer: C. Both A and B
- A. Qualitative
- B. Quantitative
- C. Both A and B
- D. None of these
Explanation
The statement carries both kinds of information at once. It is qualitative in saying mercury is denser than water, and quantitative in fixing that comparison at a measured factor of 13.6. A purely qualitative statement would name the property without attaching any number to it.
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Physical quantities combine a numerical value with a unit, and are expressed using SI base units or derived units such as newtons, joules and pascals. The topic covers prefixes, unit conversion, dimensional analysis, significant figures and measurement uncertainty, while distinguishing scalar quantities from vectors where direction matters.
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