Is a 1950 ford sedan battery a positive or a negative ground? Why are gram-positive bacteria purple in colour while gram negative are red? Gram-positive bacteria have a thick mesh-like cell wall which is  made up of peptidoglycan (50-90% of cell wall), which stains  purple.
If you talk about best schools in delhi ncr â Shri Ram School and DPS schools chains dominate top rankings. However Amity School is also considered in top schools. Being from Gurgaon and an alumni of DPS SECTOR 45 I can say DPS Sector 45, Sushant Lok are still the best schools in gurgaon particularity.
Bal Bharati Public School Sec-12, Dwarka, New Delhi-110075 INDIA. Ph: 011-2803 1970, 011-2803 1955, Fax: 011-2803 1552 , e-mail : principal_bbpsdw@yahoo.com. Delhi Public School, Dwarka. DELHI PUBLIC SCHOOL Sector 3, Phase-I Dwarka, New Delhi â 110078 INDIA.