Three crops that contribute maximum to global food grain production are _________
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Which of the following was the first antibiotic discovered by Alexander Fleming in 1928?
The first large scale electrical air conditioning was invented and used in 1902 by
The award which, the famous writer and social activist Mahasweta Devi, who passed away recently, did not win
Highest Civilian Honour received by Kamal Haasan is _______.
√(cosec2 - 1)/cosecA is equal to?
The maximum fixation of solar energy is done by
Absolute Zero is defined as