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Aqua-regia
Hydrochloric acid
Acetic acid
Nitric acid
Graphite and heavy water are two common moderators used in a nuclear reactor. The function of the moderator is to
Hard water and soft water can be distinguished by using
Hardest allotrope of carbon is
Heavy water is so called as it contains
Heavy water is used as a coolant in nuclear reactors Heavy water is
Helium gas is used in gas balloons instead of hydrogen gas because it is
Helium is added to the oxygen supply of deep sea divers as it is
Higher concentration of nitrogen dioxide in atmosphere air causes
Highest percentage of carbon is found in which form of coal?
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is