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Which of the following statements are NOT correct?
A. Hydrogen is used to reduce heavy metal oxides to metals.
B. Heavy water is used to study reaction mechanism.
C. Hydrogen is used to make saturated fats from oils.
D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any element.
E. Hydrogen reduces oxides of metals that are more active than iron.
Choose the most appropriate answer from the options given below:
A
A, B, C only
B
B, C, D, E only
C
B, D only
D
D, E only
Explanation
The H–H bond enthalpy is the highest single-bond value, and H2 does not reduce oxides of metals more active than iron.
Detailed Solution
A, B and C are correct statements.
The H–H bond dissociation enthalpy is highest for a single bond between two atoms of any element.
Hydrogen does not reduce oxides of metals that are more active than iron.