Question : Heavy water is used as a coolant in nuclear reactors. Heavy water is
Option 1: Water rich in minerals
Option 2: Ozonised water
Option 3: Water containing minerals of heavy metal
Option 4: Water containing heavy isotope of hydrogen
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Correct Answer: Water containing heavy isotope of hydrogen
Solution : The correct answer is Water containing a heavy isotope of hydrogen.
Heavy water contains Deuterium in place of hydrogen in water. Hydrogen has no neutrons, but the isotope deuterium contains one electron, one neutron, and one proton. It is used in nuclear reactors as a coolant because it can absorb neutrons effectively.
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