What happens to my limit order at the end of the day

see, if i buy intraday say, the following stock:
stock name: reliance
buy price: 1400
now i set the limit order price for selling the stock in intraday for the limit price 1450. now if the stock doesnt touches my limit price of 1450 till the end of the day.
then what will happen to my open sell limit order at the end of the day, will it get cancelled as the sell price of 1450 is not touched or the broker squares off my position at the current market price whatever price that may be then?

Your limit order will be cancelled automatically and the position being intraday it will also be shared off by the broker automatically around 3 pm.