The Indian equity benchmarks are set to open sharply lower on Monday as indicated by the Nifty Futures traded on Singapore Exchange. Nifty Futures on Singapore Exchange also known as SGX Nifty Futures fell 2.78 per cent or 452 points to 15,792 amid weak global cues. The price of oil jumped more than $10 a barrel and shares were sharply lower Monday as the conflict in Ukraine deepened amid mounting calls for harsher sanctions against Russia.