A Gantt Chart is good for planning but not an effective tool for control. Can you please let me know if it is true or false and why?
The answer is "true".
See "Advantages and limitations" at
http://en.wikipedia.org/wiki/Gantt_chart
It tends to give too rosy a picture of project status, and fails to show the importance and consequences of meeting or not meeting deadlines along critical paths.
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