Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
Radiocarbon is produced in the atmosphere as a result of
Options: collision between fast neutrons and nitrogen nuclei present in the atmosphere, action of ultraviolet light from the sun on atmospheric oxygen, action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere, lightning discharge in atmosphere
Options: It is a social and religious movement form about AD 500 to 1600, It is the movement that influenced the developed of regional language because it emphasised people's everyday speech, both (a) and (b), None of the above
Options: a condition in the international market where nations do not impose customs duty or other taxes on import of goods, market where the price of a commodity is determined by free play of the forces of supply and demand, ports that are exempted from payment of customs duty on articles of commerce, primarily to encourage tourism, None of the above