#Composition #SSC Stenographer

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Question : The chemical composition of heavy water is:
Option 1: H₂O₂
Option 2: HO
Option 3: HDO
Option 4: D₂O

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Answer (1)

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Correct Answer: D ₂ O

Solution : The correct option is D ₂ O.

Protium, an isotope of hydrogen, makes up normal water or H₂O. Another hydrogen isotope, deuterium D ₂ O replaces protium in heavy water. Deuterium is an isotope of hydrogen having a nucleus made up of both a proton and a neutron. Protium atoms only have a proton in their nucleus. Heavy water has a higher melting point and is 10.6% denser.

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