Who invented Antibiotics?
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The first large scale electrical air conditioning was invented and used in 1902 by
Inderjeet Singh is related to ______.
The Arabic work of al-Biruni that gave an account of the subcontinent is called __________.
Gandhiji's 'Satyagraha' meant an attachment to the following two elements
Arrest of _________ in 1930 led to angry demonstrations in streets of Peshawar.
Who discovered the colour photography?
Who Invented Neon Lamp?