During eleventh Antarctic Expedition in Nov. 1991/March 1992 ____ was installed.
Options
A. SODAR (SOnic Detection And Ranging)
B. Second Permanent Station 'Maitree'
C. First permanent station 'Dakshin Gangotri'
D. None of the above
Correct Answer
SODAR (SOnic Detection And Ranging)
Explanation
SODAR (SOnic Detection And Ranging), also written as sodar, is a meteorological instrument also known as a wind profiler which measures the scattering of sound waves by atmospheric turbulence.
3. GATT (General Agreement on Tariffs and Trade) is
Options
A. international agreement signed in 1947 between non-communist nations with the object of encouraging international trade unobstructed by tariff barriers
B. agreement which seeks to achieve its aim by arranging and encouraging bargaining with trade concessions between members