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 chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

Chronic exposure to ______ at sufficient concentrations is known to be associated with higher incidence of leukemia.

  1. sodium

  2. benzene

  3. methane

  4. all of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Contaminated or polluted soil directly affects human health through direct contact with soil, or via inhalation of soil contaminants which have vaporized. Chronic exposure to benzene at sufficient concentrations is known to be associated with higher incidence of leukemia. 

Multiple choice evs safety and first aid community health hygiene first aid

Which of the following is the threat to community health?

  1. Pollution

  2. Squalor

  3. Addiction

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

Pollution, squalor, and addiction are all significant negative factors that impact the well-being of a community. Therefore, all these elements constitute threats to community health.

Multiple choice biology hygiene - a key to healthy life community health hygiene first aid

Effects of large particle, would be mild, after trapping into:

  1. The nose

  2. The lungs

  3. The respiratory track

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

Large particles are typically filtered out by the hairs and mucus in the nose before they can reach the deeper respiratory tract. This serves as the first line of defense for the respiratory system.

Multiple choice evs - i safety and first aid community health hygiene first aid

Consumption of tobacco causes

  1. COPD

  2. Cancer

  3. Asthma

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

  • Tobacco use has predominantly negative effects on human health and concern about the health effects of tobacco has a long history.
  •  Tobacco also contains nicotine, which is a highly addictive psychoactive drug.
  • When tobacco is smoked, nicotine causes physical and psychological dependency. 
  • Tobacco use leads most commonly to diseases affecting the heart, liver and lungs. Smoking is a major risk factor for heart attacks, strokes, chronic obstructive pulmonary disease (COPD) (including emphysema, asthma and chronic bronchitis), and several cancers (particularly lung cancer, cancers of the larynx and mouth, bladder cancer, and pancreatic cancer). It also causes peripheral arterial disease and high blood pressure. Hence, Consumption of tobacco causes COPD, Cancer and Asthma.
 So, the correct answer is ' All of these'.

Multiple choice transgenic organisms biotechnology and its applications biotechnology and its application biology

What does make farm animals most susceptible?

  1. Lead toxicity

  2. Florine toxicity

  3. Sulfur toxicity

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

Fluorine toxicity (fluorosis) is a significant health issue in livestock, often caused by the ingestion of forage contaminated with industrial emissions or high-fluoride water. It leads to skeletal deformities and dental issues, making animals highly susceptible to health decline.

Multiple choice biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

In humans, nitrates causes blood disease and

  1. Gastric cancer

  2. Bladder infection

  3. Skin infection

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

Nitrates in drinking water can be converted to nitrites in the body, which interfere with the blood's ability to carry oxygen. Long-term exposure to high levels of nitrates is also associated with an increased risk of gastric cancer.

Multiple choice common respiratory diseases respiratory disorders respiratory system respiratory system of human biology

Chemicals in cigarette smoke lead to the breakdown of the walls of the alveoli. What is the name given to this disease ?

  1. Bronchitis

  2. emphysema

  3. coronary heart disease

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

Bronchitis is inflammation of the bronchi (large and medium-sized airways) in the lungs. Symptoms include coughing up mucus, wheezing, shortness of breath, and chest discomfort, such mainly occurs due to large consumption of smoke which leads to the breakdown of the walls of alveoli. 

So, 'the correct option is Bronchitis'.

Multiple choice common respiratory diseases respiratory disorders respiratory system respiratory system of human biology

Increased asthmatic attacks in certain seasons are related to

  1. Hot and humid environment

  2. Eating fruits preserved in tin containers

  3. Inhalation of seasonal pollen

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

Asthma attacks can be triggered by exposure to allergens, such as pollen, mold or animal dander. This type of asthma is known as allergic asthma. Seasonal allergic rhinitis occurs when a person comes in contact with an allergen or a substance that he or she is sensitive to like pollens.

Multiple choice biology food and health adulteration of food food adulteration food and human health

Argemone oil in mustard oil can cause

  1. Cancer

  2. Paralysis

  3. Blindness

  4. Typhoid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Adulteration is a process of mixing undesirable and inferior materials in food. The material or substance which is added to food is called as adulterants. Adulterated food is impure, unsafe, or unwholesome food. Mustard oil is adulterated with argemone oil. The adverse effect of administrating a large amount of argemone oil include nervous debility, paralysis, and even death if untreated.
Thus, the correct answer is option B.
Multiple choice biology food and health adulteration of food food adulteration food and human health

Smoked foods are not favoured now because of the possible toxicity of

  1. Benzpyrene

  2. Nitrogen oxides

  3. Sulphur dioxide

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

Benzopyrene is the polycyclic aromatic hydrocarbon that is released upon the incomplete combustion of the organic matter. It is found in cigarette smoke, coal tar, smoked and grilled food etc. The consumption of such foods causes toxicity on the blood.

A. Benzopyrene is the toxic hydrocarbon in smoked food.
B. Nitrogen oxide is released from the fertilizer factories, vehicular exhausts and industrial emission.
C. Sulphur dioxide is released from the smelting facilities, vehicles and industries.
Hence, the correct answer is 'Benzopyrene'.

Multiple choice biology food and health adulteration of food food adulteration food and human health

What was the cause of 'Yusho' disease which occurred in 1968 form a leak in 1968 canning factory? 

  1. DBCP

  2. PCB

  3. Formaldehyde

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

In 1968, a mixture of dioxins and polychlorinated biphenyl (PCBs) got into rice bran oil by accidental leakage at the rice oil producing Kanemi Company on February 7-15 produced in northern Kyushu. Contaminated cooking oil sickened more than 1860 people. The symptoms were called Yusho disease. 

Multiple choice geography hazards major hazards in india and prevention tsunami and floods pollution and environment study of water pollution threats to water resource

Air pollution causes damage to human health either in _____ or _______.

  1. short term, long term

  2. short term

  3. extended term

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air pollution can lead to immediate health issues, such as respiratory irritation or coughing, which are short term effects. Prolonged exposure can lead to chronic diseases like asthma, cancer, or heart disease, which are long term effects.

Multiple choice zoology drugs effects of smoking smoking tobacco busy at work - our internal organs

Effects of nicotine on human body include

  1. Release of adrenaline and hence increased blood pressure and heart beat

  2. Stimulation of nerve impulse and muscle relaxation

  3. Decreased foetal growth

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

Nicotine is a potent parasympathomimetic alkaloid and a stimulant drug. In particular, it is both a stimulant and a relaxant. It causes a release of glucose from the liver and adrenaline from the adrenal medulla thereby causing stimulation of nerve impulses and muscle relaxation.
Nicotine also produces adverse fetal effects. It is likely that hypoxia, undernourishment of the fetus and direct vasoconstrictor effects on the placental and umbilical vessels play a role.
Therefore, the correct answer is option D.

Multiple choice zoology drugs effects of smoking smoking tobacco busy at work - our internal organs

Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons, which causes

  1. Reduction in oxygen transport

  2. Increase in blood pressure

  3. Cancer

  4. Retardation of growth of foetus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Polycyclic aromatic hydrocarbons or PAHs are a group of powerful cancer-causing chemicals found in cigarettes that can damage DNA and set cells down the road to becoming tumours. PAHs tend to damage particular sections of DNA. We know that PAHs contribute to lung cancer in smokers because DNA damage can be seen at these sections in patients.  One PAH compound, benzopyrene, is notable for being the first chemical carcinogen to be discovered (and is one of many carcinogens found in cigarette smoke). Its consequences are so bad, even if the woman exposed to PAH pollution during pregnancy, then there is adverse birth outcomes including low birth weight, premature delivery and heart malformations, lower IQ and asthma. Cord blood of exposed babies shows DNA damage that has been linked to cancer.