Which of the following is NOT a radioactive element?
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The force of friction between two surfaces will increase if:
A curved mirror where the reflecting surface is curved inwards is called a
The given symbol stands for a/an ___ in an electric circuit.
By which process the Chinese Scientists have cloned two identical long - tailed macaques?
A deep crack in a glacier is called
What is the name of ecologically clean rocket developed by Russia based space research center?
Which out of the following is not a launch vehicle of India for placing satellites in the orbit?