1) What was the source of alpha particles in Rutherford scattering experiment?
2) Name the subatomic particles which determine the mass of an atom.
3) Out of three states of matter, which one has minimum spaces between particles?
4) What do CNG stand for?
5) A substance has a definite shape as well as a definite volume. Which physical state is
represented by this statement?
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Answer:
1. helium
2.neutrons and protons
3.solid state
4.compressed natural gas
5.solid state
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