Underground water and the water on the earth's surface is called ________________
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India has designed and developed pilotless target aircrafts named ___ and made successful test flight of its unmanned air vehicle (UAV).
1. Nishant
2. Lakshya
3. Astra
When was the ASLV used in India for the first time?
______________ kills the germs present in the water.
Geospatial data can be obtained for the following
Number of satellites launched by the ISRO using its PSLV- C51 rocket -
The official journal of the Committee on Space Research (COSPAR) is
Water covers _______________ % of the Earth’s surface.