4081. In a food chain; how much solar energy utilized by plants?
1 percent
4082. Which form of phosphorus is used in safety matches?
Red phosphorus
4083. Who is the author of “The Scope of Happiness; ”?
Vijayalakshmi Pandit
4084. Which part of Delhi where Aibak laid the foundation of the first so called 'Seven cities' of medieval Delhi,?
Mehrauli
4085. Who performed India's first heart transplantation on 3rd August 1994?
Dr. Venugopal of All India Institute of Medical Science
4086. By whom was the Asiatic Society established in Calcutta?
Sir William Jones
4087. In certain amino acids, which elements is found in addition to carbon, hydrogen, nitrogen and oxygen?
Sulphur
4088. The credit to become the opposition leader for the longest period goes to?
E.M.S.
4089. The largest cell is ?
Egg of Ostrich.
4090. Who is the author of "Business @ Speed of Thought?
Bill Gates