Sensex dove over 1,300 points to hit a day's low of 74,680.10, while Nifty fell below the 23,200 mark in intraday trading on Friday. This comes as oil prices continue to rise despite US' 30-day waiver for countries to buy Russian oil stranded at sea. Hindustan Unilever, Bharti Airtel and Trent were among the few gainers on Sensex.