Rules for Using Period and Question Mark

Hey, I am here with some more rules which I always follow in writing documents. Without taking much time, I would highlight the rules. They are for using period/question mark:-

Use Period (.)

We all know, it is a punctuation mark. It is placed at the end of independent clause to mark its completeness. It also used after abbreviation.

• Use period at the end of independent clause: My name is Priyanka Singh. 
• Use period after an indirect question: John asked Mary where she was yesterday. 
• Use period with abbreviations: A.M. , P.M, Dr., i.e., e.g., Mr., Mrs., Ms.
• Do not use periods with abbreviation for organizations and associations: TCS  (Correct) conversely T.C.S (Incorrect)
• Do not use period for state abbreviations
• Texas (TX)- Correct
• Texas (TX.)- In correct

Use Question Mark (?)

It is a punctuation mark used at the end of a sentence to indicate a question. 

Yes, you all are right. It is very simple. Just use the question mark at the end of direct interrogative sentence, but not indirect question sentence. 

• Are you going to the office?
• Has she submitted her assignment? 
• How old are you? 

:) :)