Question: It also plays Silent Night and the volume of the music can be adjusted
Please fix the punctuation.
Fixed: [It also plays "Silent Night" and the volume of the music can be adjusted.]

Question: When its deleted by Symantec Endpoint Protection the infected DLL file would be removed too
Please fix the punctuation.
Fixed: [. When it's deleted by Symantec Endpoint Protection, the infected DLL file would be removed too.]

Question: We can wonder at the hitherto lukewarm support from national side which has led to a very real risk that many successful ideas and projects would fail
Please fix the punctuation.
Fixed: [We can wonder at the hitherto lukewarm support from national side, which has led to a very real risk that many successful ideas and projects would fail.]

Question: In appearance and behaviour Norbert Wiener was a baroque figure short rotund and myopic combining these and many qualities in extreme degree
Please fix the punctuation.
Fixed:
[In appearance and behaviour, Norbert Wiener was a baroque figure, short, rotund, and myopic, combining these and many qualities in extreme degree.]