The method of soil conservation in which ploughing is done parallel to the contours of a hill slope to form a natural barrier for water to flow down the slop is called?
Under the ‘National Electric Mobility Mission Plan’, the government wants to see 6-7 million electric and hybrid vehicles on Indian roads from year ______ onwards.
The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)