Question : Carbon dating means:
Option 1: a method to determine the density of fissile material
Option 2: a method of calculating the remains of sulphur and nitrogen in hard rock
Option 3: a method of calculating the age of objects by measuring the amounts of different forms of carbon in them
Option 4: a method of determining the weight of the rock
Correct Answer: a method of calculating the age of objects by measuring the amounts of different forms of carbon in them
Solution : The correct option is a method of calculating the age of objects by measuring the amounts of different forms of carbon in them .
Carbon dating is a method used to determine the age of organic materials by measuring the amount of carbon-14 they contain. This is based on the fact that carbon-14, a radioactive isotope, decays over time at a known rate.
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Question : Acid rain is caused due to pollution of the atmosphere by:
Question : Which among the following gases is also known as ‘Laughing Gas’?
Question : Which among the following is added to commercial nitric acid to make it coloured?
Question : Ozone consists of which of the following?
Question : Lactometers (used to determine the purity of a sample of milk) and hydrometers (used to determine the density of liquids) are based on the ______ principle.
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