The bad effect of chemical reagent used

The bad effect of the chemical reagents are described below:

1. Heavy metals like (Hg) causes great injury in the nervous system.
2. Due to the uses of Phosphorus fertilizer and mine activities Cadmium is increased on the soil. This Cadmium are transfer to the animal body by food corn and vegetable grown on the soil. Cadmium harms mainly kidney.
3. Cyanide (CN) compounds are very poisonous even in the case of low vaporization.
4. Due to the involvement with Potassium (K) for a long time it can create rash on skin, headache, itching in mucus membrane. It cause sleepless, weightless etc.
5. Potassium Iodide (IK) is very dangerous for soil, water, drinking water and drainage system.
6. When Potassium Hydrogen thalate is heated,  CO₂ and CO gas are very dangerous.
7. Copper (Cu) compounds may create headache, vomiting & diarrhea.
8. Copper(II) Sulphate (CuO₄S) is very poisonous for micro-organism and has a long lasting effect on the environment. It produce H₂SO₄ when it come in contact with air and heat which is harmful for environment.
9. Magnesium (Mg) can create poisonous and irritating smog, fire even this can occurs explosion when it is come in contact with air which is dangerous to all.
10. Sodium Disulphide (Na₂S₂) Create allergy.
11. Zinc Oxide (OZn) is very dangerous because it is corrosive.
12. Zinc (Zn) increase the acidity of water and cause a great harm to the environment.