Manufacturing and services sectors in India expanded at a faster rate than China's in May even as emerging market output remained stuck in "low gear", an HSBC survey said on Friday.

The HSBC Emerging Markets Index (EMI), a monthly indicator derived from Purchasing Managers' Index surveys, inched up to 50.6 in May from 50.4 in April, indicating weak output growth across global emerging markets.

While the EMI stood at 50.6 in May, the developed world's PMI was at 55.4 during the month. "While the former (EMI) points to an ongoing languor that has plagued the emerging markets over the past year, the developed world has moved into a higher gear and is now enjoying it strongest growth for just over three years," Markit Chief Economist Chris Williamson said.