Question : For determination of the age of which among the following is carbon dating method used ?
Option 1: Fossils
Option 2: Rocks
Option 3: Trees
Option 4: 1 & 2
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Correct Answer: 1 & 2
Solution : The correct answer is 1 & 2.
Carbon dating method is used to determine the age or rocks and fossil fuels. It measures the age of the material using organic content present in it. Carbon-14 is a radioactive isotope of carbon which is emitted by the fossils or rocks. The older the sample the less carbon-14 it would emit. When an animal dies it stops absorbing carbon and begins to disintegrate, so the age is calculated with the help of carbon-14 left in it.
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Question : Which among the following rocks may contain fossils of plants, animals and other microorganisms that once lived on them?
Option 1: Metamorphic rocks
Option 2: Intrusive igneous rocks
Option 3: Sedimentary rocks
Option 4: Extrusive igneous rocks
Question : What is the name of that technique,which uses radioactivity to decide the period of materials of pre-historic period?
Option 1: Radium dating
Option 2: Uranium dating
Option 3: Carbon dating
Option 4: Deuterium dating
Question : Which of the following trees shed their leaves once a year?
Option 1: Deciduous trees
Option 2: Coniferous trees
Option 3: Evergreen trees
Option 4: Both deciduous and coniferous trees
Question : Which of the following is not a method of measuring national income?
Option 1: Intermediate goods method
Option 2: Expenditure method
Option 3: Income method
Option 4: Product method
Question : Which of the following is not one of the methods of national income estimation?
Option 1: Banking method
Option 3: Product method
Option 4: Income method
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