Environmental Studies · Biology

Environmental Health and Toxicology

1,717 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 zoology human influences on the environment carbon cycle ozone layer depletion and causes depletion of ozone layer

Increase in carbon dioxide in atmosphere is harmful because it

  1. traps heat

  2. causes respiratory disorders

  3. forms smog

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

Carbon dioxide is one of the most abundant and major greenhouse gas which entraps the heat and causes the rise in temperature of the earth surface hence is greatly responsible for global warming also.

so the correct answer is 'traps heat'.

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Microbiological pollutants, cause sickness in humans, known as

  1. Pathogenic organism

  2. Decomposers

  3. Eutrophication

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

Microbiological pollutants that cause disease are defined as pathogens or pathogenic organisms. Decomposers break down organic matter, and eutrophication is a process of nutrient enrichment in water bodies.

Multiple choice evs - i the environment and us soil and its conservations soil pollution-control protecting our environment

Which of the following is an effect of soil pollution?

  1. Sewage sludge is contaminated with pathogenic bacteria, viruses and worms.

  2. Loss of fertility

  3. Various diseases related to digestive system

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Soil pollution is defined as the presence of toxic chemicals (pollutants or contaminants) in soil, in high enough concentrations to pose a risk to human health and/or the ecosystem.
  • The effects of soil pollution are:
  • Sewage sludge is contaminated with pathogenic bacteria, viruses, and worms.
  • Loss of fertility of soil.
  • Results in Various diseases related to the digestive system.
  • So, the correct answer is 'All the above'.
Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Pneumoconiosis is caused by inhalation of?

  1. coal dust

  2. silica dust

  3. cotton fibre dust

  4. asbestor dust
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation
Pneumoconiosis caused by working around dust from cotton fibers and  includes silica asbestos.
Minerals with combined exposures to coal and silica dust can get mixed dust causes Pneumoconiosis by inhalation of coal mine.

conclusion: all the four answers are matchable.
Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Addiction of LSD will eventually leads to

  1. Damage of kidneys

  2. Damage of lungs

  3. Mental and emotional disturbances

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

LSD is lysergic acid diethylamide. It is the one of the most potent, mood-changing chemicals. It is a hallucinogen and is well known for its psychological effects which can include altered thinking processes, closed and open-eye visuals, synesthesia, an altered sense of time and spiritual experiences.
Therefore, the correct answer is option D.

Multiple choice

Working in a coal mine caused this

  1. Blue Lung

  2. Dead Lung

  3. Black Lung

  4. Red Lung
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Black lung disease, or coal worker's pneumoconiosis, is a condition caused by long-term inhalation of coal dust. It causes scarring of the lung tissue.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following is involved in inhibition of growth of plants which is produced due to human activities?

  1. Auxins

  2. Phytotoxin

  3. Mycotoxins

  4. Antitoxins
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Auxin is a plant hormone which causes the elongation of cells in shoots and is involved in regulating plant growth.
Phytotoxins refers to substances that are inhibitory to the growth of or poisonous to plants. Phytotoxic substances may result from human activity, as with herbicides, or they may be produced by plants, by microorganisms, or by naturally occurring chemical reactions.
Mycotoxins are toxic chemical products produced by fungi that readily colonize crops.
Antitoxins are antibodies that counteracts a toxin.
So, the correct answer is option B.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

A pollutant that causes irritation in eyes, throat and nose.

  1. CO
  2. $SO _2$
  3. $CH _4$

  4. Chlorofluorocarbons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Inhalation of SO$ _2$ irritates the nose, throat, and airways to cause coughing, wheezing, shortness of breath, or a tight feeling around the chest. The effects of sulphur dioxide are felt just after 10-15 min of inhalation.

So, the correct option is 'SO$ _2$'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Disease aggravated by pollution is ________.

  1. Scurvy

  2. Rheumatism

  3. Haemophilia

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

Air pollution is responsible for various pulmonary or respiratory diseases like asthma, emphysema, bronchitis etc. 

A. Scurvy is the bleeding disease of gums caused by the deficiency of vitamin C.
B. Rheumatism is the inflammatory disease of the membrane of the synovial joints caused due to uric acid accumulation.
C. Haemophilia is the disease related to the absence of blood clotting caused due to the genetic mutation.
D. Bronchitis is the inflammatory disease of the bronchioles caused due to air pollution.
Hence, the correct answer is 'Bronchitis'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

3, 4-benzopyrene causes 

  1. Leukaemia

  2. Cytosilicosis

  3. Lung cancer

  4. Tuberculosis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are a number of chemicals, which causes lung cancer and one of them is 3, 4- benzopyrene. Benzopyrene mutates three key positions in the p53 gene, which leads to lung cancer. Hence, the correct answer is option C.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Osteoporosis will be caused by pollutant 

  1. Chlorine

  2. Bromine

  3. Fluorine

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Skeletal fluorosis or osteoporosis is a bone disease caused by excessive accumulation of fluoride in the bones. In advanced cases, skeletal fluorosis causes pain and damage to bones and joints. Due to a high fluorine concentration in the body, the bone is hardened and thus less elastic, resulting in an increased frequency of fractures. Other symptoms include thickening of the bone structure and accumulation of bone tissue, which both contribute to impaired joint mobility. Ligaments and cartilage can become ossified. As a result, bone flexibility decreases making the bone more amenable to fractures.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

In a small town, pasture is contaminated with airborne fluorides. Grazing animals of that area will suffer from  

  1. Dental and bone diseases

  2. Goitre disease

  3. Thyroid disease

  4. Beri-beri
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Airborne fluorides have caused more worldwide damage to domestic animals than any other air pollutant. Fluoride is not biodegradable and gradually accumulates in the environment through the food chain, in human and animal bodies, where it settles in bones and teeth. Thus, the correct answer is option A.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Enriched air if inhaled for long time causes 

  1. Allergy

  2. Bronchitis

  3. Disturbance of psychomotor function

  4. Diarrhoea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pollution is defined as addition of harmful components in the environment which alters the composition of an environment. The harmful component is known as pollutant. Enriched air, also called as oxygen enriched air, or nitrox has more oxygen in it. The two most commonly used nitrox mixtures are 32% and 36% oxygen with less nitrogen. The most common use of nitrox mixtures containing higher than normal levels of oxygen is in scuba diving. The result of breathing elevated partial pressures of oxygen is hyperoxia, an excess of oxygen in body tissues. 

The body is affected in different ways depending on the type of exposure. Central nervous system toxicity is caused by short exposure to high partial pressures of oxygen at greater than atmospheric pressure. Pulmonary and ocular toxicity result from longer exposure to elevated oxygen levels at normal pressure. Symptoms may include disorientation, breathing problems, and vision changes such as myopia. Prolonged exposure to above-normal oxygen partial pressures, or shorter exposures to very high partial pressures, can cause oxidative damage to cell membranes, the collapse of the alveoli in the lungs, retinal detachment, and seizures.
Thus, the correct answer is option C.