A solution is a homogeneous mixture of two or more substances. In such a mixture, a solute is dissolved in another substance, known as a solvent. The solvent does the dissolving. Usually, the substance present in the greatest amount is considered the solvent. Solvents can be gases, liquids, or solids. The solution has the same physical state as the solvent. Crystalline compounds after losing thier water of crystallization are called ________ compounds? Oxyhydrogen flame is used for __________ purpose? One method for producing acids is by the reaction of nitrogen dioxide with water which of the following equation correctly shows this reaction?
Hydrogen is the tenth most abundant element in the universe? By passing steam over red-hot coke hydrogen gas is produced? The purest hydrogen is obtained by the elctrolysis of water in the presence of an acid? Molecular hydrogen is colourless, odourless and toxic gas? Oxidation state of hydrogen is (+1) in NaH? Hydrogen reacts with sulphur to form hydrogen sulphide? Addition of hydrogen to unsaturated compounds in the presence of catalyst is called hydrogenation? Total amount of water present on earth is 1? 33 billion cubic kilometer? The boiling point of water is lower than other chemically silmiliar compound?
In presence of catalyst hydrogen combines with carbonmonoxide to form methyl alcohol? Which one of the following compounds is metal hydride? Hydrogen shows +1 oxidation state in following compounds except? Which of the following compound has higher boiling point Which of the following compound has higher boiling point? Soft water consumes a large amount of soap in washing processes? Insoluble calcium and magnesium sulphates reduce the efficiency of engine? Atomic hydrogen is a powerful reducing agent? Nitric acid is used for the preparation of hydrogen in the laboratory? Permanent hardness of water is produced due to the presence of? Polluted water produces a disease trachoma which effects on? Number of water molecules in hydrated copper sulphate crystal is?