Indian equity benchmarks BSE Sensex and NSE Nifty50 are likely to start Tuesday's session sharply higher tracking a rise across global markets amid optimism about the corporate earnings season, though concerns persisted about the impact of steep rate hikes on economic growth. Singapore Exchange (SGX) Nifty futures — an early indicator of the Nifty index — jumped as much as 205 points or 1.2 percent to 17,520 ahead of the opening bell on Dalal Street. Investors awaited more earnings from India Inc for domestic cues.