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The hardest substance available on earth is
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The hardest substance available on earth is
Gold
Iron
Diamond
Platinum
Answer : C
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5) Which of the following shows the masses of the three elementary particles in decreasing order?
Leptons, Baryons, Mesons
Mesons, Baryons, Leptons
Baryons, Mesons, Leptons
Leptons, Mesons Baryons
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