Question

Statements about heavy water are given below
A. Heavy water is used in exchange reactions for the study of reaction mechanisms
B. Heavy water is prepared by exhaustive electrolysis of water
C. Heavy water has higher boiling point than ordinary water
D. Viscosity of $H _{2} O$ is greater than $D _{2} O$

• A. $A , B$ and $C$ only
• B. $A $ and $B$ only
• C. $A$ and $D$ only
• D. $A$ and $C$ only

Answer 1

Answer: (A)

Heavy water is used in exchange reactions for study of reaction mechanisms

Heavy water is prepared by exhaustive electrolysis of water

$B.P$. of $D _{2} O =374.4 \,K$

$B.P$. of $H _{2} O =373\, K$

Viscosity of $H _{2} O =0.89$ centipoise

Viscosity of $D _{2} O =1.107$ centipoise