A) Ice formed by heavy water sinks in normal water.
B) Water is oxidized to oxygen during photosynthesis.
C) Water can act both as an acid and as a base.
D) There is extensive intra molecular hydrogen bonding in the condensed phase.
Correct Answer: D
Solution :
(a) Ice formed by heavy water sinks in normal water due to higher density of D2O than normal water. (b)\[6C{{O}_{2}}+6{{H}_{2}}O\xrightarrow[chlarophyll]{hv}{{C}_{6}}{{H}_{12}}{{O}_{6}}+6{{O}_{2}}\] (c) Water can show amphiprotic nature and hence water can act both as an acid a base. (d) There is extensive intermolecular hydrogen bonding in the condensed phase instead of intra molecular H-bonding.
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