Physics · Physical Properties & Measurement Standards
Which of the following statements is INCORRECT regarding physical density standards and principles?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Specific gravity is defined as the ratio of the density of a substance to the density of water at a specified reference temperature.
- 2Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by 1°C.
- 3Water reaches its maximum density of approximately 1000 kg/m3 at 4°C, serving as a standard reference for liquids.
- 4Air or hydrogen is used as the standard gas density reference, whereas oxygen is the universally established standard for density measurements of all gases.✓
Correct answer
Air or hydrogen is used as the standard gas density reference, whereas oxygen is the universally established standard for density measurements of all gases.
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