preparation of sulphur by bacterial action

Dry sulphur dioxide does not have any bleaching action. However, if the gas is moist, or if the object to be bleached is moist, then bleaching takes place. Usually only delicate articles such as coloured flowers, silk, wool etc., are bleached by sulphur dioxide. The bl..

Dry sulphur dioxide does not have any bleaching action. However, if the gas is moist, or if the object to be bleached is moist, then bleaching takes place. Usually only delicate articles such as coloured flowers, silk, wool etc., are bleached by sulphur dioxid..

When heated, sulphur undergoes a series of characteristic changes. Sulphur can melt at two different temperatures. a) If heated rapidly, it melts at 112.8 o C. b) But if heated slowly it will melt only at 118.6 o C. Roll sulphur is rhombic. When heated it slowly change..

It combines with sulphur trioxide to form carbonyl sulphide. CS 2 + 3SO 3 COS + 4SO 2 Carbonyl sulph..

At 170 o C ethyl alcohol undergoes dehydration when treated with concentrated H 2 SO 4 to form ethane. At lower temperature of 140 o C and when present in excess ethyl alcohol forms a pleasant smelling substance called diethyl ether..

When concentrated sulphuric acid is added to sugar, it becomes a black mass ofsugar charcoal. The acid removes all the hydrogen and oxygen (as water) from the sugar and absorbs it leaving a residue of spongy carbon...

When concentrated sulphuric acid is added to sugar, it becomes a black mass of sugar charcoal. The acid removes all the water from the sugar, that is, hydrogen and oxygen and absorbs it leaving a residue of spongy carbo..

It is interesting to note that when metallic nitrates and chlorides are heated with concentrated sulphuric acid, respective acids are formed i.e. nitric acid and hydrochloric acid. This shows less volatile nature of sulphuric aci..

Bacterial Chromosome - In bacteria, which being prokaryotic organisms, the entire hereditary material is packed into a single, irregularly folded compact mass called nucleoid or genophore or bacterial chromosome. It is short and simple consisting of a single DNA molecule. The DN..