. the light that is transmitted is seen by the observer and appears coloured because some of the wavelengths of the visible spectrum are now missing. figure mauveine was the first ever synthetic dye. it was produced accidentally by william perkin in who was trying to synthesize quinine. it became particularly...
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their distillation; bituminous substances; mineral waxes section- chapter ( to ) section vi - products of the chemicals or allied industries chapter chapter description chapter- inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements of isotopes...
highlighted certain facts and few recent developmental steps, which are being taken to reduce or minimize the contamination level in this area. nature of contamination before finding any measures for elimination of contamination first of all let us understand the possible sources of contamination and...