Question

Which of the following is correct about heavy water.

• 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

Answer 1

Answer: (C)

It is formed by the combination of heavier isotope of hydrogen and oxygen

Answer 2

Heavy water is formed by the combination of heavier isotope $(_{1}H^{2}\text{ or }D)$ with oxygen.

$2D_{2} + O_{2} \rightarrow \underset{\text{Heavy water}}{2D_{2}O}$