1) Bohr 's model is applicable to a) He +1 b) Li +2 c) both a&b d) none of these 2) The oxidation number of N in NO 3 - a) +5 b) +2 c) -2 d) 0 3) The splitting of spectral lines by magnetic field is called as a) zeeman effect b) stark effect c) bohr effect d) de broglie effect 4) Electron behaves like a) wave b) particle c) both a and b d) photon 5) The splitting of spectral lines in electric field is a) stark effect b) zeeman effect c) rutherofrd effect d) none of these

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