Occupational Health Practice Questions

Q: Above which level of heat stress index is it not possible to work comfortably?

40 – 60. ***40 – 60*** - A heat stress index **above 40** represents the threshold where it becomes **not possible to work comfortably** due to increasing thermal load on the body. - At this level, the thermal environment causes significant discomfort and increases the risk of heat-related illnesses such as **heat exhaustion**. - While work can still be performed with precautions (frequent breaks, hydration, reduced workload), **comfortable working conditions** are no longer sustainable. - This is the recognized threshold in occupational health where workers begin experiencing notable heat stress symptoms. *20 – 40* - A heat stress index between **20 and 40** represents comfortable to moderately warm conditions where normal work activities can be performed comfortably. - This range is generally safe for sustained physical activity without significant risk of heat-related illness. - No special precautions are typically required, though basic hydration remains important. *60 – 80* - A heat stress index of **60 to 80** indicates **dangerous heat stress** where even modified work becomes hazardous. - At this level, the risk of **heat stroke** and **heat exhaustion** is high, requiring immediate protective measures or cessation of work. - This range is well beyond uncomfortable—it represents a serious occupational health hazard. *80 – 100* - An index of **80 to 100** signifies **extreme danger** with imminent risk of **heat stroke** even with minimal exertion. - Work is essentially impossible and potentially life-threatening at this level. - Emergency protocols and complete avoidance of heat exposure are necessary.

Q: Which occupational exposure may cause sterility in females ?

Agricultural insecticides. ***Agricultural insecticides*** - Exposure to **organochlorine** and **organophosphate** insecticides can have significant **reproductive toxicity** in females, leading to **infertility** or **sterility**. - These chemicals can disrupt **hormonal balance**, interfere with **ovarian function**, cause **menstrual irregularities**, and lead to **developmental toxicity** in offspring. - Well-documented occupational hazard in agricultural workers with chronic exposure. *Lead* - Lead is a well-established **reproductive toxicant** affecting **both males and females**. - In females, lead causes **menstrual irregularities**, **ovarian dysfunction**, **reduced fertility**, **spontaneous abortions**, and can contribute to sterility. - It disrupts the **hypothalamic-pituitary-ovarian axis** and has direct **gonadotoxic effects**. - While agricultural insecticides are more specifically associated with female sterility in occupational contexts, lead is also a significant reproductive hazard. *Carbon monoxide* - Carbon monoxide poisoning primarily causes **hypoxia** by binding to hemoglobin, forming **carboxyhemoglobin**. - It does not directly cause **sterility** in females; its main reproductive concern relates to **fetal hypoxia** and adverse pregnancy outcomes during exposure. *Mercury* - Mercury exposure, particularly **methylmercury**, is a known **neurotoxin** and can cause **developmental abnormalities**. - While it can affect pregnancy outcomes and cause **menstrual disorders** at high exposures, it is not typically cited as a primary occupational cause of **female sterility** compared to agricultural insecticides.

Q: What is the maximum allowable noise exposure according to the Indian Factory Act?

90 db for 8 hours. ***90 dB for 8 hours*** - According to the **Indian Factories Act (Schedule II)**, the maximum permissible noise exposure for workers is **90 decibels (dB)** over an **8-hour workday**. - This standard is specified in **Park's Textbook of Preventive and Social Medicine** and represents the official Indian statutory limit for occupational noise exposure. *90 dB for 6 hours* - While **90 dB** is the correct decibel level per the Indian Factories Act, the duration specified is incorrect. - The standard exposure time under the **Indian Factories Act** is **8 hours**, not 6 hours, making this option inaccurate. *85 dB for 8 hours* - This represents the **WHO and NIOSH recommendations** for safe noise exposure, not the Indian Factories Act standard. - While **85 dB** is more conservative and safer, the **Indian statutory limit** is set at **90 dB for 8 hours**. *80 dB for 8 hours* - **80 dB** is significantly below both the Indian Factories Act limit and international recommendations. - This level would be considered very safe but is not the **maximum allowable limit** specified by Indian occupational health regulations.

Q: Which of the following should be used to treat bagasse to prevent fungal infection and bagassosis in workers handling sugarcane residue?

2% propionic acid. ***2% propionic acid*** - **Propionic acid (2%)** is the standard treatment for **bagasse** (dried sugarcane residue) to prevent fungal and thermophilic actinomycetes growth. - Treating bagasse with 2% propionic acid during storage effectively prevents **bagassosis**, a hypersensitivity pneumonitis caused by inhaling fungal spores from moldy bagasse. - This is an important **occupational health measure** in sugar mills and industries that handle sugarcane byproducts. *2% formic acid* - **Formic acid** is primarily used as a silage preservative to prevent bacterial fermentation, but it is less effective against the thermophilic fungi and actinomycetes that cause bagassosis. - While it has some antimicrobial properties, it is not the standard preventive agent for bagasse treatment. *2% acetic acid* - **Acetic acid** has antifungal properties but is less potent than propionic acid for preventing fungal growth in stored agricultural biomass. - It is not the recommended agent for bagassosis prevention in industrial settings. *10% hypochlorite solution* - A **10% hypochlorite solution** (bleach) is a strong disinfectant used for surface sterilization, not for treating stored plant material. - Hypochlorite would damage the bagasse and is not practical or appropriate for preventing bagassosis in occupational settings.

Q: What is the primary focus of ergonomics in the design of work environments?

Optimizing the interaction between workers and their tasks.. ***Optimizing the interaction between workers and their tasks.*** - **Ergonomics** seeks to design and arrange workplaces to fit the user, focusing on how tools, tasks, and the work environment impact efficiency and well-being. - The primary goal is to **enhance human well-being** and overall system performance by making work safer, more efficient, and more comfortable. - It emphasizes the **compatibility between worker capabilities and job demands**. *Analyzing human factors in design.* - While analyzing **human factors** is a crucial component of ergonomics, it's a means to an end, not the primary focus itself. - This process helps understand physiological, behavioral, and psychological characteristics to better inform design, but the ultimate aim is **interaction optimization**. *Studying the impact of environment on performance.* - This is a broader area that encompasses ergonomics but isn't its sole or primary focus. - Environmental psychology or occupational health studies might focus on this broadly, while ergonomics specifically tailors environments for **worker-task compatibility**. *Maximizing worker productivity regardless of comfort.* - This contradicts the core principle of ergonomics, which balances **both productivity AND worker well-being**. - Ergonomics recognizes that sustainable productivity comes from worker comfort, safety, and health - not at their expense.

Q: Vineyard sprayer's lung is seen in which metal poisoning?

Copper. ***Copper*** - **Vineyard sprayer's lung**, also known as **"blue vitriol disease,"** is a form of **granulomatous lung disease** caused by chronic inhalation of copper sulfate, historically used in vineyards. - The condition is directly linked to occupational exposure to **copper-containing pesticides**, leading to fibrosis and granuloma formation in the lungs. *Arsenic* - Arsenic poisoning can lead to **peripheral neuropathy**, skin lesions (**hyperkeratosis**, **hyperpigmentation**), and an increased risk of various cancers (skin, lung, bladder). - It does not specifically cause "vineyard sprayer's lung" or a primary fibrotic lung disease of this nature. *Mercury* - Mercury poisoning (especially inorganic mercury vapor) primarily affects the **nervous system** (tremors, psychological disturbances), kidneys, and gastrointestinal tract. - While it can manifest as respiratory symptoms upon acute exposure, it is not associated with fibrotic lung disease like vineyard sprayer's lung. *Lead* - Lead poisoning (plumbism) mainly impacts the **hematopoietic system** (anemia), **nervous system** (neuropathy, encephalopathy in children), and kidneys. - It is not known to cause a specific lung disease resembling "vineyard sprayer's lung."

Q: Byssinosis is most commonly associated with which occupational setting?

Textile industries. ***Textile industries*** - **Byssinosis**, also known as "brown lung disease," is an occupational lung disease caused by the inhalation of **cotton dust** and other vegetable fibers. - Workers in **textile mills**, especially those involved in ginning, carding, and spinning cotton, are at high risk. *Cement factories* - Workers in cement factories are primarily at risk for **silicosis** or **asbestosis** due to exposure to silica and asbestos, not byssinosis. - These conditions involve **fibrosis** and restrictive lung disease, distinct from the reactive airway symptoms of byssinosis. *Iron factories* - Iron factory workers are susceptible to **siderosis**, a benign pneumoconiosis caused by the inhalation of **iron oxide dust**. - Siderosis typically involves radiological changes but often without significant functional impairment, unlike byssinosis. *Grain fields* - Agricultural workers in grain fields are more commonly exposed to organic dusts, leading to conditions like **farmer's lung** (hypersensitivity pneumonitis). - This condition involves an immune response to **mold spores** in hay and grain, presenting with different symptoms and pathology than byssinosis.

Q: 'Safety officers' must be appointed in factories employing how many or more workers?

1000 workers. ***1000 workers*** - According to the Factories Act 1948, Section 40B, **factories employing 1000 or more workers** are mandated to appoint safety officers. - This provision aims to ensure adequate attention to **worker safety and health** in large industrial setups. *500 workers* - While worker safety is crucial in all facilities, the specific threshold for mandatory appointment of **safety officers** is not 500 workers under the Factories Act. - Factories with fewer than 1000 workers may have other safety requirements but not the compulsory appointment of a dedicated safety officer. *2000 workers* - The requirement for appointing safety officers is met at a lower threshold than 2000 workers. - This number exceeds the statutory minimum for mandatory safety officer appointments. *5000 workers* - Such a high number of workers would definitely require safety officers, but the legal requirement is triggered much earlier. - This option is significantly above the **statutory threshold** outlined in the Factories Act.

Question 1

Above which level of heat stress index is it not possible to work comfortably?

Accepted Answer

40 – 60

Answer

20 – 40

Answer

60 – 80

Answer

80 – 100

Question 2

Which of the following is not considered an occupational cancer?

Accepted Answer

Breast

Answer

Lung

Answer

Liver

Answer

Bladder

Question 3

Which occupational exposure may cause sterility in females ?

Accepted Answer

Agricultural insecticides

Answer

Lead

Answer

Carbon monoxide

Answer

Mercury

Question 4

Acceptable noise levels in industries are:

Accepted Answer

80-85 dB

Answer

70-75 dB

Answer

100-105 dB

Answer

90-95 dB

Question 5

What is the maximum allowable noise exposure according to the Indian Factory Act?

Accepted Answer

90 db for 8 hours

Answer

90 db for 6 hours

Answer

85 db for 8 hours

Answer

80 db for 8 hours

Question 6

Which of the following should be used to treat bagasse to prevent fungal infection and bagassosis in workers handling sugarcane residue?

Accepted Answer

2% propionic acid

Answer

10% hypochlorite solution

Answer

2% acetic acid

Answer

2% formic acid

Question 7

What is the primary focus of ergonomics in the design of work environments?

Accepted Answer

Optimizing the interaction between workers and their tasks.

Answer

Analyzing human factors in design.

Answer

Studying the impact of environment on performance.

Answer

Maximizing worker productivity regardless of comfort.

Question 8

Vineyard sprayer's lung is seen in which metal poisoning?

Accepted Answer

Copper

Answer

Arsenic

Answer

Mercury

Answer

Lead

Question 9

Byssinosis is most commonly associated with which occupational setting?

Accepted Answer

Textile industries

Answer

Cement factories

Answer

Iron factories

Answer

Grain fields

Question 10

'Safety officers' must be appointed in factories employing how many or more workers?

Accepted Answer

1000 workers

Answer

500 workers

Answer

2000 workers

Answer

5000 workers

Occupational Health — MCQs

Occupational Health — MCQs

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