971. What are the main channels of our knowledge about the Indus Valley Civilization?
Archaeological excavations
972. Gobar gas contains mainly which gas?
Methane
973. The filament of an electric bulb is made of which metal?
Tungsten
974. Who is the author of “Social Contract”?
Rousseau
975. Which are macro-nutrients provided by inorganic fertilizers?
Nitrogen; phosphorus and potassium
976. Which year India government formally launched Pulse Polio Campaign?
1994
977. The Kayyur Riot against caste system and imperialism was on?
28 march 1941 in Kasargode.
978. Who is the author of “Aksharam”?
O.N.V Kurup
979. By whom was the Vernacular Press Act was passed?
Lord Lytton
980. Devadasi System in the temples of South Travancore was abolished during the regency of?
Setu Lekshmi Bai.