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A second pendulum is a pendulum whose time period is
Earth is a-
In which decade was the telephone invented?
The gas used for artificial fruit ripening of green fruit is -
This group of alumino-silicate minerals is widely used in making electrical insulators
Which among the given is not a chemical reaction -
Which of the following produced by the solar energy transformation by using photovoltaic cell?
Earths atmosphere is an envelope of gases extending to a height of
In which form the chemical compound RDX is used?
Thomas Clifford Allbutt is associated with the invention of
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