An earnest man would easily fall prey to questions like these. You need to tackle questions like these tactically. When they ask about your weakness, your reply should be something like, ' I do not get peaceful till the work at hand is complete even if excess work affects my health adversely'. Such an answer reveals your love for the work you do and your true dedication and devotion as an employee. Your choice of an answer to such questions reveal your true attitude towards work.

You may also say things like ' My weakness is my strict adherence to deadlines even when the project is not urgent' or 'I can't tolerate indiscipline'. These are replies that highlight you in positive light. Such weaknesses only glorify you.