# Hydration of terminal alkynes in the presence of mercuric sulfate always yields a methyl ketone whereas...

###### Question:

Hydration of terminal alkynes in the presence of mercuric sulfate always yields a methyl ketone whereas hydration of internal alkynes produces mixture of ketones. Explain with appropriate example. Hydroboration-Oxidation of an internal alkyne produces ketone whereas the same reaction for a terminal alkyne yields aldehyde - why? State the rule associated in it.

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