What is the smallest and largest font size available in Font Size tool on format

What is the smallest and largest font size available in Font Size tool on formatting toolbar?

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1) Which operation you will perform if you need to move a block of text?

2) Which would you choose to move selected text from one place to another?

3) By pressing F12, which of following will happen ?

4) Which of the following do you use to change margins?

5) We can insert maximum number of columns in Ms Word are ...