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One atom
Three atoms
Five atoms
Four atoms
In galvanization, iron is coated with
In known elements, the maximum number is of
In organic compounds, nitrogen is estimated by
In polluted water, the dissolved oxygen in it
In the vulcanization of rubber, the element used is
In upper layer of atmosphere ozone is formed by
In Which among the given states max. iron ore is found
In which of the following activities silicon carbide is used?
In which of the following groups, are the elements written in the descending order of their respective atomic weights?
In which of the following pairs, the two substances forming the pair are chemically most dissimilar?
