Explanation:

• The QS World University Subject Rankings 2020 has been released from London by Quacquarelli Symonds. Quacquarelli Symonds is the world’s leading provider of services, analytics, and insight to the global higher education sector.
• QS uses four key metrics to compile the rankings including academic reputation, employer reputation, citations per paper and the h-index which measures how productive an institution's research faculty are.
• As against 21 institutions getting ranked in 2019, the latest edition has seen 26 Indian departments entering the top-100 list for their subjects. All 26 departments are in institutions run by the Union government — IITs, IIMs, IISc and Delhi University.
• QS has also seen an increase in the number of Indian programs ranking among the global top 50.