A) Water at 4°C having maximum density is known as heavy water
B) It is heavier than water \[({{H}_{2}}O)\]
C) It is formed by the combination of heavier isotope of hydrogen and oxygen
D) None of these
Correct Answer: C
Solution :
Heavy water is formed by the combination of heavier isotope \[({{\,}_{1}}{{H}^{2}}\text{ or }D)\] with oxygen. \[2{{D}_{2}}+{{O}_{2}}\to \underset{\text{Heavy water}}{\mathop{2{{D}_{2}}O}}\,\]
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