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Q1: When a nucleus undergoes radioactive decay, its
Q6: The specific heat of water is
Q12: The maria of the moon are covered
Q17: Pangaea split into Laurasia and Gondwana during<br>A)Precambrian
Q29: Light of which of the following colors
Q30: A mineral never found in igneous rocks
Q34: A star whose spectral lines are shifted
Q43: Molecules in space can be identified from
Q44: A converging lens of focal length f
Q53: Of the following kinds of waves, those