Answers:
1. What are the different TABS available?
The different TABS are: File, Home, Insert, Page Layout, Formulas, Data, Review, View, and Help.
2.Which TAB is to be used for formatting the text?
The "Home" TAB.
3.Which TAB to be used in adding themes and page layout?
The "Page Layout" TAB.
4. Which TAB is to be used for formula auditing?
The "Formulas" TAB.
5. Which TAB to be used in adding comments?
The "Review" TAB.