3541. Soil can best be conserved on the hills by which of the cultivating methods?
Contour ploughing
3542. Why is the date April , 1930 known in Indian History?
Dandi March by Mahatma Gandhi
3543. World War I was fought between?
Germany with Austria; Hungary against Britain with Russia; France; Japan; Canada and Belgium
3544. The act of blood clotting when one gets cut to stop the bleeding is called ?
Coagulation
3545. J.R.D. Tata was the first to make a solo flight from Mumbai to Karachi; in the year?
1931
3546. In which country would you find Lake Disappointment?
Australia
3547. What is abiotic component of ecosystem?
Water
3548. The United Nations declared 2012 as the International Year of which thing?
Cooperatives
3549. Who is the author of 'Vedanta Saram"?
Chatampi Swamikal
3550. Malayalam Radio Broadcasting was started for first time in 1939 from?
Chennai