Which of the following is NOT a radioactive element?
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Based on the common features like presence of notochord and dorsal hollow neural system, animals like fishes, amphibians, reptiles, birds along with mammals are included in which Phylum?
Which is the closest star to our solar system?
June 21 marks the winter solstice in the _________ Hemisphere.
An _______________ is a sudden shaking or trembling of the earth.
What is the maximum number of Members of the Rajya Sabha?
The force of friction between two surfaces will increase if:
The given symbol stands for a/an ___ in an electric circuit.