Q. Number of isotopes which oxygen atom has, are

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Q. C₃H₄O₃ is empirical formula for vitamin

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Q. Moleis defined as mass of an element divided by

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Q. Ordinary microscope can measure up to

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Q. Molecules expressed by formula unit mass are

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Q. Positive ion formation is

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Q. Modern method for separation of isotopes is

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Q. Formation of negative ion is

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Q. In new spectrometers each ion hits a

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Q. Reactant which controls amount of products is

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Q. Formula showing simplest whole number ratio is

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Q. Number of isotopes occupied by Palladium is

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Q. Amount of KOH used in combustion analysis is

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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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