Environmental Studies · Biology

Environmental Health and Toxicology

1,658 Questions

Access targeted questions on environmental health, pollution impacts, and toxicology fundamentals. The topics cover the health effects of air pollution, radiation, and chemical exposure. This material is highly relevant for environmental science tests and general awareness sections of competitive exams.

Air pollution health effectsPesticide exposure risksOzone depletion impactsEnvironmental epidemiologySkin inflammation conditions

Environmental Health and Toxicology Questions

Multiple choice

Water pollution can affect

  1. Drinking water

  2. Human health

  3. Waterborne diseases

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water pollution has wide-ranging impacts, including contaminating drinking water supplies, harming ecosystems, and spreading waterborne diseases that affect human health.

Multiple choice commercial studies waste generation and management e-waste management e-wastes waste generation

How are electronic items dangerous?

  1. They degrade over time, releasing cancer-causing chemicals into the air.

  2. Lead and mercury in components can cause metabolic changes in users.

  3. They lead toxic metals in landfills and into ground water.

  4. They create electromagnetic fields that interfere with animal reproduction.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Electronic waste contains heavy metals such as lead, mercury, and cadmium. When improperly disposed of in landfills, these toxins can leach into the soil and contaminate groundwater.

Multiple choice commercial studies waste generation and management e-waste management e-wastes waste generation

E-waste contains hazardous substances that are harmful to the environment and human health if not properly treated or disposed of, therefore they must be handled with care. What are the health hazards which can be caused by e-waste?

  1. Brain damage

  2. Lung cancer

  3. DNA damage

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling or disposal are also considered e-waste. E-waste recycling spews dioxins into the air. E-waste recycling using uncontrolled processes is a major source of dioxin-related compounds. Air around e-waste recycling areas in Guiyu, China, contains the highest levels of dioxins ever recorded. When computers, televisions, music systems, and other electronic products reach the ends of their lives, they often end up in China or other developing countries as e-waste. Such waste is a serious environmental threat in these parts of the world because of the poorly regulated conditions under which the waste is dismantled. E-waste affects brain, lungs and all over the body. There is also evidence of cell membrane lesion, cause DNA single-strand breaks. DNA breaks can increase the likelihood of developing cancer. DNA damages are a special problem in non-dividing or slowly dividing cells, where unrepaired damages will tend to accumulate over time. On the other hand, in rapidly dividing cells, unrepaired DNA damages that do not kill the cell by blocking replication will tend to cause replication errors and thus mutation.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

Why is mercury particularly hazardous?

  1. it is increasing global warming

  2. it is increasing depletion of the ozone layer

  3. it is highly radioactive

  4. the concentration increases up the food chain and reaches to user .
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mercury is hazardous to the environment because it interferes the food chain and enters human body causing adverse effects. This process is called bio magnification.

Example is the cause of Minimata disease, caused due to the mercury pollution in Japan. Tons of Mercury was released by industries into the river water and this entered human bodies by eating the fish which already consumed mercury of river water. Many people suffered nervous disorder because of the disease caused by mercury pollution.

Multiple choice biology food components and nutrition effect on general health growth and development in young people nutrient deficiency diseases

.............. has a tremendous effect on the health of an individual, specially in children.

  1. Heart attack

  2. Anaemia

  3. Cancer

  4. Malnutrition
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  1. Malnutrition is a condition that results from eating a diet in which one or more nutrients are either not enough or are too much such that the diet causes health problems.
  2.  If an individual is not provided with enough nutrients, they are called undernutrition or undernourishment while too much is called overnutrition.
  3.  If undernutrition occurs during pregnancy, or before two years of age, it may result in permanent problems with physical and mental development.
  4. Symptoms that include: a short height, thin body, very poor energy levels, and swollen legs and abdomen. Hence, malnutrition has a tremendous effect on the health of an individual, especially in children.

So, the correct answer is 'malnutrition'.

Multiple choice zoology our health introduction to health and disease health and its failure health and its significance

Health of an organism depends upon the surrounding environmental conditions.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Health is a state of complete physical, mental and social well being and not merely the absence of diseases. One can be considered in a state of positive health when his surrounding conditions provide him a healthy environment. Unhygienic conditions like sewage, domestic water, garbage, toxic substances and harmful gases pollute the surrounding environment which may cause several diseases and psychie disorders that ultimately deteriorates the health of a person.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Among the following which one causes more indoor chemical pollution?

  1. Burning coal

  2. Burning cooking gas

  3. Burning mosquito coil

  4. Room spray
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Among the given four options, both burning of coal and burning of mosquito coil will cause chemical pollution, but burning of coal will cause more pollution. The main ingredient in mosquito coils is pyrethrum C (a natural extract from the Chrysanthemum flower). At high doses, it is responsible for various respiratory disorders. The coal leads to release of a wide array of air pollutants $ \left( { CO } _{ x }{ SO } _{ x }{ NO } _{ x }\quad etc. \right) . $ Among these, CO is very dangerous, it interfer with breathing process. People are generally advised not to sleep with coal burning in the closed room.
So, the correct answer is 'Burning coal'.
Multiple choice business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

Asthma can be caused by

  1. Water pollution

  2. Soil erosion

  3. Air pollution

  4. Thermal pollution
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Asthma is a condition in which a person's airways become inflamed, narrow and swell and produce extra mucus, which makes it difficult to breathe.
  • The symptoms of asthma often present in periodic attacks or episodes of tightness in the chest, wheezing, breathlessness, and coughing.
  • Asthma is caused by many reasons such as air pollution, smoking, dust, pets, chemicals, and genetic reasons. Allergins present in the polluted air causes an inflammatory reaction is airways which leads to asthma.
  • Hence Asthma can be caused by air pollution.
  • So, the correct answer is 'Air pollution'.
Multiple choice business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

Of the following, which one causes more indoor chemical pollution

  1. Turning coal

  2. Burning mosquito coil

  3. cooking gas

  4. Room spray
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coal usually produces a lot of smoke. So, when burning indoor it creates a lot of chemical pollution.

Mosquito coil, cooking gas and room spray doesnt produce a lot of smoke. 

Multiple choice business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

Multiple Choice Questions
A pollutant producing burning sensation of throat and eyes along with feeling of vomiting is

  1. Hydrogen sulphide

  2. Sulphur dioxide

  3. Hydrogen cyanide

  4. Arsenic.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

H$ _2$S is a primary air pollutant emitted from putrifying substances, refineries, bituminous fuels etc. It causes burning sensation of throat and eyes along with feeling of vomiting or nausea. In plants it may cause defoliation and mottled chlorosis.

So, the correct answer is option A, Hydrogen sulphide.