2056: Which two countries follow China and India in the decreasing order of their populations ?
(a) Brazil and USA
(b) Canada and Malaysia
(c) USA and Indonesia
(d) Russia and Nigeria
2057: India carried out its first underground nuclear explosion at:
(a) Thumba
(b) Pokhran
(c) Trombay
(d) Khemkaran
2058: Physico-chemical characteristics of water in water sources undergo changes due to
(a) aquatic macrophytes
(b) aquatic fungi
(c) effluents
(d) evapotranspiration
2059: The Ajanta Caves were built during the period of:
(a) Guptas
(b) Kushans
(c) Mauryas
(d) Chalukyas
2060: Which one of the following mountain ranges is spread over only one State in India ?
(a) Aravalli
(b) Satpura
(c) Ajanta
(d) Sahyadri