Heavy water is _____

Question

Question

This question was previously asked in

Bihar Police Constable Memory Based Paper (Held On : 22 Oct 2017)

Answer 1

CONCEPT:

Heavy water:

Protium (₁H¹), Deuterium(₁H²), Tritium(₁H³) are the three isotopes of hydrogen.
Heavy water is a form of water that contains deuterium (₁H²) rather than protium (₁H¹)
Heavy water is used as a moderator in nuclear reactors
A molecule of heavy water has two deuterium atoms in place of the two protium atoms of ordinary "light" water. Heavy water is made by burring deuterium in oxygen

EXPLANATION :

Heavy water is made up of deuterium (₁H²) and oxygen, the presence of deuterium gives different nuclear properties other than normal water
Hence option 3 is the answer

EXTRA POINTS:

Uses of Heavy water:

Heavy Water is used for the preparation of Deuterium.
It is used as a tracer to study the mechanism of respiration, and photosynthesis.
D2O is used in NMR (nuclear magnetic resonance) spectroscopy, which is used to observe the magnetic fields around the nuclei of atoms.
Isotopologues of many organic compounds are prepared with the help of deuterium oxide.
As a moderator in the nuclear reactor to slow down the neutrons.