_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.
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Who proposed Continental drift theory?
Choose the most appropriate answer:In which atmospheric layer are the communication satellites located?
The communication satellites are located in Ionosphere.
A galvanometer can be converted into a voltmeter by connecting with it a
An Odometer is an instrument used to measure ____ in automobiles.
Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)
Sound travels at a speed of 333 m/s in the air, thus, in 1 s, a distance of 333 m is travelled by
Which one of the following takes place during a nuclear fusion?
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