A) acidic \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
B) sodium metal
C) \[HCl\]
D) \[C{{H}_{3}}COOH\]
Correct Answer: B
Solution :
Acid is a substance which is capable of donating a proton. Ethyl alcohol on reaction with Na metal produces a proton. \[{{C}_{2}}{{H}_{5}}OH+Na\xrightarrow{{}}{{C}_{2}}{{H}_{5}}ONa+{{H}^{+}}\]
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