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Toxicology is a term used in the science of poisons and the study of adverse effects of chemical agents upon living organisms. The basic of the word Toxic comes from the Latin toxicus (translated poisonous), derived from ancient Greek word toxikon (to describe an arrow dipped in poisons).

Nickel-metal-hydride (NiMH) battery

Nickel-metal-hydride (NiMH) battery. The secondary (rechargeable) battery used in many small electronic devices; involves the oxidation of hydrogen from a metal hydride and the reduction of nickel oxyhydroxide

Alkaline battery

Alkaline battery is the most common single-use (primary) battery, got its name so because it uses a paste of KOH as the electrolyte. Alkaline earth metals.


Toxicity is the degree to which a substance or mixture of substances can harm humans or animals; the harm can be caused by short-term, single-time, chronically, or sub-chronic.

Dyes fibre reactive

Dyes fibre reactive- the molecules of fibre reactive dyes actually react and bond to the fibre molecules. These dyes are the best quality and most ecologically sound synthetic dyes available.

Contaminated soil

Contaminated soil is the presence of pollutants density above background levels that pose a potential ecological or health risk.

Heavy metals

Heavy metal is a term used to describe a subset of a large number of metals and metalloids with high atomic(such as chromium, cadmium, arsenic and mercury), listed in the periodic table of the elements, which have properties of both metals and non-metals.