Chemistry explains how your cells produce energy and proteins, why you breathe and have blood and what sorts of foods and vitamins are important for nutrition. With a basic understanding of chemistry, you can understand why your organs function the way they do and how the systems of your body work together.

The kind of questions that chemistry CANNOT answer is “why matter exists”. In Chemistry, question of how the properties, composition and structure of substances are is answered.

Depending on the chemical, these longer-term health effects might include:

• organ damage.
• weakening of the immune system.
• development of allergies or asthma.
• reproductive problems and birth defects.
• effects on the mental, intellectual or physical development of children.
• cancer.

Research is constantly deepening our understanding of chemistry, and leading to new discoveries. Chemistry will help us solve many future problems, including sustainable energy and food production, managing our environment, providing safe drinking water and promoting human and environmental health.

Even when precautions are taken to reduce the risk of accidents in chemical plants, they do happen from time to time. There are 4 main causes of accidents in a chemical plant: human error, improper training, manufacturing defects, and improper maintenance.

Top 4 Causes of Chemical Accidents in the Workplace

• Equipment failure. One of the top causes for chemical accidents in the workplace is due to the use of inappropriate equipment as it leads to equipment malfunctions.
• Inadequate safety review/analysis.
• Operator error.
• Warnings ignored.

Keep the contact numbers of nearest hazardous industry, fire station, police station, control room, health services and district control room, for emergency use. Avoid housing near the industries producing or processing the hazardous chemicals, if possible.

Precautions to be taken during and after the Chemical (Industrial) Accidents

1. Do not panic, evacuate calmly and quickly perpendicular to wind direction through the designated escape route.
2. Keep a wet handkerchief or piece of cloth/ sari on face during evacuation.

A chemical disaster is the unintentional release of one or more hazardous substances which could harm human health and the environment. Such events include fires, explosions, leakages or release of toxic or hazardous materials that can cause people illness, injury, or disability.

Powers and functions On NDMA[3]: The NDMA constituted under Section 3 of the DM Act, 2005, has the responsibility of laying down the policies, plans and guidelines for effective Disaster Management.

An oil and chemical spill is one of the most devastating environmental disasters that can happen because it effects people, animals, the land and the coastal waters ways. They can kill wildlife, destroy habitats, and contaminate critical resources in the food chain.

Answer. Answer: Manmade disaster:- Fire, leakage of chemical gases,bomb explosion,war. Natural disaster:- Earthquake, storms,floods, tsunami, collapse of a building, forest fire.

Man-made disasters have an element of human intent, negligence, or error involving a failure of a man-made system, as opposed to natural disasters resulting from natural hazards. Such man-made disasters are crime, arson, civil disorder, terrorism, war, biological/chemical threat, cyber-attacks, etc.

The Bhopal tragedy In 1984, a Union Carbide India Limited Plant (majority owned by Union Carbide in partnership with the Indian government) leaked thousands of tons of methyl isocyanate gas. 3,787 people were confirmed dead by the Indian government in what many consider the largest industrial accident in history.

Some examples of man-made disaster emergencies include chemical spills, hazardous material spills, explosions, chemical or biological attacks, nuclear blast, train accidents, plane crashes, or groundwater contamination. Many of these disasters can cause death, injuries, and loss of property.

Man-made disasters can include hazardous material spills, fires, groundwater contamination, transportation accidents, structure failures, mining accidents, explosions and acts of terrorism. There are actions that we can take to prepare to react appropriately to these events.

5 Worst Man-Made Disasters in History

• 1) Bhopal Gas Tragedy, India:
• 2) Deepwater Horizon Oil Spill, Gulf of Mexico:
• 3) Chernobyl Meltdown, Ukraine:
• 4) Fukushima Meltdown, Japan:
• 5) Global Warming, Third Planet from the Sun:

Man-made disasters are the result of carelessness or human errors during technological and industrial use. The disasters are in the form of accidents, which occur all of a sudden and take a huge toll on life and property. Mostly such disasters cause injuries, diseases and casualties where they occur.

Man-made disasters are the consequence of technological or human hazards. These hazards can include stampedes, fires, transport accidents, industrial accidents, oil spills, terrorist attacks, nuclear explosions/nuclear radiation.

Gas can directly and indirectly poison people and the environment — spreading rapidly, being unobserved, potentially igniting, causing death. Unfortunately, gas leaks are preventable man-made disasters that stem from the world’s expanding reliance on gas. These disasters have resulted in an egregious amount of deaths.

• Seveso disaster — 1976.
• Love Canal — 1978.
• Bhopal gas leak — 1984.
• Chernobyl disaster — 1986.
• Exxon Valdez oil spill — 1989.
• Asbestos in Libby, Montana — 1990.
• Gulf War oil spill — 1991.
• Jilin chemical plant explosions — 2005.

Top 10 deadliest natural disasters in history

• (TIE) The A.D. 1138 Aleppo earthquake. The view across the amphitheater of The Citadel in Aleppo, Syria. (
• (TIE) The 2004 Indian Ocean earthquake and tsunami.
• The 1976 Tangshan earthquake.
• The A.D.
• The 1920 Haiyuan earthquake.
• (TIE) The 1839 Coringa cyclone.
• (TIE) The 1881 Haiphong typhoon.
• The 2010 Haiti earthquake.

Ten deadliest natural disasters by highest estimated death toll excluding epidemics and famines