What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ?
Correct answer: C. Carbon dating
- A. Radium dating
- B. Uranium dating
- C. Carbon dating
- D. Deuterium dating
Explanation
Carbon dating estimates the age of once-living material by measuring the remaining radioactive carbon-14 and comparing it with its known decay rate. It is useful for archaeological materials within a limited age range.
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Chemical principles appear in acids, bases, salts, solutions, oxidation, combustion, corrosion and neutralisation, along with the composition and uses of common substances. Coverage includes soaps and detergents, fertilizers, medicines, food preservatives, polymers, fuels and water treatment, while distinguishing physical changes from chemical reactions.
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