Q. Number of radioactive isotopes is

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Q. Unstable isotopes are produced by artificial

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Q. Number of isotopes occupied by carbon is

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Q. Mass of one molecule of sulphuric acid is

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Q. Law of definite proportion is obeyed in

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Q. Mass spectrometer use to determine isotopes in solid state is

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Q. Amount of oxygen in combustion analysis is determined by method of

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Q. Most abundant molecular ions are

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Q. Elements with even number of isotopes are

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Q. In accelerating chamber of mass spectrometer potential difference is

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Q. Isotopes have same

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Q. Instrument use to measure exact 'atomic masses' is

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Q. John Dalton evidenced existence of atoms in

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Q. Instrument use to collect ions is

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Q. Atomic mass of phosphorus is

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Q. Gas molecules differ in their diameters from distance by

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Q. Theoretical yield is decreased by

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Q. Properties in which isotopes differ are

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Q. Value of molar volume is

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Q. Atomic mass is mass of carbon taken as

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