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alcohol can be coloured and its level seen easily
alcohol is cheaper than mercury
alcohol is a better conductor of heat
alcohol has a lower freezing point than mercury
In drinking water supply, which of the following treatments is not involved
In ethane, each carbon atom is bonded to
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?