Occupational Health — MCQs

Occupational Health Indian Medical PG Practice Questions and MCQs

Question 91: In a factory setting, what does sickness absenteeism primarily predict?

A. The relationship dynamics between employers and employees.
B. The overall health status of the workforce. (Correct Answer)
C. The efficiency of the critical path method in project management.
D. The extent of power and managerial control exerted.

Explanation: **Explanation:** **Why Option B is Correct:** In Occupational Health, **Sickness Absenteeism** is defined as the absence from work attributed to incapacity caused by illness or injury. It is considered a sensitive **index of the overall health status** of the workforce. By monitoring the frequency, severity, and disability rates of absenteeism, occupational health physicians can identify underlying patterns of morbidity, the prevalence of chronic diseases, and the impact of the working environment on physical and mental health. High rates often signal poor sanitation, inadequate ergonomics, or high occupational stress. **Why Other Options are Incorrect:** * **Option A & D:** While industrial relations, job satisfaction, and managerial control can *influence* absenteeism (social factors), they are not what the metric primarily *predicts* or measures in a medical/public health context. These are secondary behavioral correlations rather than the primary health indicator. * **Option C:** The Critical Path Method (CPM) is a project management tool used for scheduling tasks and determining project duration. It is unrelated to the biological or medical monitoring of workers. **High-Yield Clinical Pearls for NEET-PG:** * **Formula for Sickness Absenteeism Rate:** (Total days lost due to sickness / Total number of man-days scheduled) × 100. * **Key Factors:** Absenteeism is typically higher in women (due to maternal/domestic roles) and increases with the age of the worker. * **Common Causes:** In India, the leading causes are often non-occupational, such as respiratory infections, gastrointestinal disorders, and social factors like alcoholism or festivals. * **The "Monday Effect":** A high frequency of short-term absences on the first day of the work week often indicates social or psychological factors rather than clinical illness.

Question 92: A 50-year-old quarry worker presents with progressive dyspnea on exertion. Which of the following is the likely pneumoconiosis?

A. Asbestosis
B. Byssinosis
C. Silicosis (Correct Answer)
D. Berylliosis

Explanation: ### Explanation **Correct Answer: C. Silicosis** **Why it is correct:** Silicosis is the most common occupational lung disease worldwide, caused by the inhalation of free silica (silicon dioxide). The key to this question is the patient’s occupation: **Quarrying**. Other high-risk occupations include sandblasting, stone carving, mining (coal, mica, gold), and the ceramics or glass industries. Pathologically, it is characterized by the formation of "silicotic nodules" and is radiologically identified by "snowstorm" appearances or "eggshell calcification" of hilar lymph nodes. **Why the other options are incorrect:** * **A. Asbestosis:** Associated with occupations like shipbuilding, insulation work, and cement manufacturing. It typically presents with lower lobe fibrosis and "pleural plaques." * **B. Byssinosis:** Also known as "Monday Morning Fever," it is caused by cotton dust inhalation in textile industries. Symptoms are worse on the first day of the work week. * **D. Berylliosis:** Associated with the aerospace, electronics, and nuclear industries. It presents as a granulomatous disease similar to sarcoidosis. **High-Yield Clinical Pearls for NEET-PG:** * **Predisposition:** Silicosis significantly increases the risk of **Tuberculosis** (Silicotuberculosis) because silica impairs macrophage function. * **Radiology:** "Eggshell calcification" of hilar lymph nodes is a classic, pathognomonic finding. * **PMF:** Progressive Massive Fibrosis (PMF) is a complication where nodules coalesce, leading to severe respiratory failure. * **Statutory Notification:** In India, Silicosis is a notifiable disease under the Factories Act and the Mines Act.

Question 93: Which one of the following is the most common initial symptom of byssinosis?

A. Chest tightness (Correct Answer)
B. Wheezing
C. Cough
D. Haemoptysis

Explanation: **Explanation:** **Byssinosis**, also known as "Monday Fever" or "Brown Lung Disease," is an occupational lung disease caused by the inhalation of cotton, flax, hemp, or jute dust. It is a classic high-yield topic in Community Medicine. **1. Why "Chest Tightness" is correct:** The hallmark clinical feature of byssinosis is **chest tightness**, which typically occurs on the **first day of the work week** (Monday) after a weekend break. This is due to the release of histamine or other mediators triggered by the endotoxins present in the cotton bracts. As the disease progresses, the symptoms may extend to subsequent days of the week, but the initial and most characteristic presentation remains acute chest tightness. **2. Why other options are incorrect:** * **Wheezing:** While wheezing can occur in advanced stages or in individuals with underlying reactive airway disease, it is not the primary or most common initial symptom. * **Cough:** Cough may be present as a secondary symptom, but it lacks the diagnostic specificity of the "Monday morning" chest tightness. * **Haemoptysis:** This is not a feature of byssinosis. Its presence should prompt an investigation for other conditions like Tuberculosis, Bronchiectasis, or Malignancy. **3. High-Yield Clinical Pearls for NEET-PG:** * **Schilling’s Classification:** Used to grade Byssinosis (Grade ½: Occasional chest tightness on the first day of the week; Grade 1: Chest tightness every Monday; Grade 2: Chest tightness on Monday and other days). * **Etiology:** Caused by **Gram-negative bacterial endotoxins** found in the cotton dust. * **Diagnosis:** Primarily clinical history and a significant drop in **FEV1** during the first shift of the work week. * **Prevention:** Use of "Pre-cotton" (steamed cotton), effective exhaust ventilation, and periodic medical check-ups.

Question 94: Benefits under the Employees State Insurance scheme include all the following except?

A. Dependent's benefit
B. Funeral benefit
C. Dearness allowance (Correct Answer)
D. Rehabilitation Allowance

Explanation: The **Employees’ State Insurance (ESI) Act, 1948** is a comprehensive social security legislation designed to provide protection to employees against sickness, maternity, disablement, and death due to employment injury. ### **Why "Dearness Allowance" is the Correct Answer** **Dearness Allowance (DA)** is a cost-of-living adjustment allowance paid by an employer to employees as part of their regular salary to mitigate the impact of inflation. It is a component of **wages**, not a benefit provided by the ESI Corporation. The ESI scheme provides social security benefits, whereas DA is a statutory requirement of the employment contract. ### **Analysis of Other Options** * **A. Dependent’s Benefit:** If an insured person dies as a result of an employment injury or occupational disease, their dependents (widow, children, or parents) receive a monthly pension. * **B. Funeral Benefit:** A lump-sum payment (currently up to ₹15,000) is paid to the eldest surviving member of the family or the person who actually incurs the expenditure of the funeral. * **D. Rehabilitation Allowance:** This is paid to insured persons for each day they are admitted to an Artificial Limb Center for fixation/repair of artificial limbs. ### **High-Yield ESI Facts for NEET-PG** * **The "Seven Benefits":** Sickness, Maternity, Disablement, Dependent’s, Medical, Funeral, and Rehabilitation benefits. * **Wage Ceiling:** Currently applies to employees earning up to **₹21,000 per month** (₹25,000 for persons with disabilities). * **Contribution Rates:** Employer’s share is **3.25%** and Employee’s share is **0.75%** of the wages (Total = 4%). * **Medical Benefit:** This is the only benefit provided in **kind** (medical care); all others are generally cash benefits. * **Sickness Benefit:** Provides 70% of average daily wages for a maximum of 91 days in two consecutive benefit periods.

Question 95: Farmer's Lung is caused due to exposure to:

A. Bacillus Subtilis
B. Thermoactinomyces Sacchari (Correct Answer)
C. Aspergillus Fumigatus
D. Penicillium Nalgiovens

Explanation: **Explanation:** **Farmer’s Lung** is a type of **Hypersensitivity Pneumonitis (Extrinsic Allergic Alveolitis)** caused by the inhalation of organic dust containing thermophilic actinomycetes. These microorganisms thrive in moldy hay, grain, or straw stored in warm, humid conditions. * **Why Option B is Correct:** **Thermoactinomyces sacchari** (along with *Micropolyspora faeni*) is a primary causative agent. When a farmer handles moldy hay, these spores are inhaled, triggering a Type III (immune complex) and Type IV (cell-mediated) hypersensitivity reaction in the alveoli. Note: While *T. sacchari* is classically associated with Bagassosis, it is a recognized member of the thermophilic actinomycetes group causing Farmer's Lung in various agricultural contexts. **Analysis of Incorrect Options:** * **A. Bacillus Subtilis:** Associated with **Detergent worker’s lung** (due to enzyme exposure), not agricultural hay. * **C. Aspergillus Fumigatus:** Primarily causes **ABPA (Allergic Bronchopulmonary Aspergillosis)** or Aspergilloma. While it can cause hypersensitivity, it is not the classic agent defined for Farmer’s Lung. * **D. Penicillium Nalgiovens:** Generally used in the food industry (dry-cured meats). *Penicillium casei* is associated with Cheese washer’s lung. **High-Yield Clinical Pearls for NEET-PG:** * **Bagassosis:** Caused by *Thermoactinomyces sacchari* (exposure to moldy sugar cane residue). * **Byssinosis:** Caused by cotton dust; characterized by "Monday Morning Fever." * **Silicosis:** Shows "Egg-shell calcification" of hilar lymph nodes. * **Diagnosis:** Farmer's Lung is diagnosed via history, presence of serum precipitins (IgG), and "Ground-glass appearance" on HRCT. * **Prevention:** Ensuring hay is dried properly (moisture <15%) before storage.

Question 96: Which of the following diseases is NOT eligible for extended sickness benefit for 309 days?

A. Leprosy
B. Aplastic anemia
C. Immature cataract with vision 6/60 or less
D. None of the above (Correct Answer)

Explanation: **Explanation:** The **Extended Sickness Benefit (ESB)** under the ESI Act, 1948, is a cash benefit provided to insured persons suffering from specific long-term diseases that require prolonged treatment and absence from work. To qualify, an individual must have been in continuous employment for at least 2 years. 1. **Why the correct answer is "None of the above":** The ESI Corporation has a defined list of **34 chronic and malignant diseases** eligible for ESB. This benefit extends the standard sickness benefit (91 days) to a total of **two years (309 days + 91 days = 400 days)** at a higher rate (80% of wages). Since Leprosy, Aplastic Anemia, and Immature Cataract (with vision 6/60 or less) are all included in this list, none of them are ineligible. 2. **Analysis of Options:** * **Leprosy (Option A):** Included under infectious diseases requiring long-term therapy. * **Aplastic Anemia (Option B):** Included under chronic hematological disorders. * **Immature Cataract (Option C):** Specifically included if vision is 6/60 or less in the better eye, as it significantly impairs occupational capacity. **High-Yield Clinical Pearls for NEET-PG:** * **Sickness Benefit:** 91 days in two consecutive benefit periods (70% of wages). * **Extended Sickness Benefit (ESB):** 309 days (Total 400) for 34 diseases (80% of wages). * **Enhanced Sickness Benefit:** Provided for sterilization (7 days for Vasectomy, 14 days for Tubectomy) at 100% of wages. * **Eligibility for ESB:** The insured person must have completed at least 156 days of contribution in the preceding 4 contribution periods.

Question 97: What is the minimum age for employment of children under the Factory Act?

A. 12 years
B. 14 years (Correct Answer)
C. 15 years
D. 18 years

Explanation: **Explanation:** The **Factories Act of 1948** is a vital piece of social legislation in India designed to regulate working conditions and ensure the health and safety of workers. Under this Act, the employment of children below the age of **14 years** is strictly prohibited in any factory. This age limit is aligned with Article 24 of the Indian Constitution and the Child Labour (Prohibition and Regulation) Act. **Analysis of Options:** * **14 years (Correct):** This is the legal minimum age for employment. A person between 14 and 18 years is defined as an **"Adolescent"** and can only work if they obtain a certificate of fitness from a certifying surgeon. * **12 years (Incorrect):** This age has no legal standing in modern Indian labor laws; it was historically relevant in pre-independence era regulations but is now obsolete. * **15 years (Incorrect):** While 15 is the threshold where an individual is no longer a "child" but an "adolescent" under the Act, the *minimum* entry age remains 14. * **18 years (Incorrect):** This is the age of majority. While individuals under 18 are restricted from hazardous processes and night shifts, they are legally allowed to work in non-hazardous factory roles starting at 14. **High-Yield NEET-PG Pearls:** * **Child:** A person who has not completed 15 years of age. * **Adolescent:** A person between 15 and 18 years of age. * **Young Person:** A collective term for both children and adolescents (under 18). * **Working Hours for Children/Adolescents:** Limited to a maximum of **4.5 hours per day** and prohibited between 7 PM and 6 AM. * **Certifying Surgeon:** Only a qualified medical practitioner authorized by the government can issue the "Certificate of Fitness" required for adolescents to work.

Question 98: Which type of desk is used by students in a laboratory setting?

A. Plus desk
B. Minus desk (Correct Answer)
C. Zero desk
D. No desk

Explanation: In school health and occupational ergonomics, the relationship between the desk and the chair is critical for maintaining correct posture and preventing musculoskeletal disorders. This relationship is defined by the **"Distance,"** which is the horizontal measurement between the front edge of the seat and a vertical line dropped from the rear edge of the desk. ### **Explanation of Options:** * **Minus Desk (Correct Answer):** In a minus desk, the edge of the desk overlaps the edge of the seat (the desk extends over the seat). This is the preferred ergonomic setup for **reading and writing** because it encourages an upright posture and prevents the student from leaning too far forward. It is the standard choice for classrooms and laboratories. * **Plus Desk:** Here, there is a horizontal gap between the edge of the desk and the seat. This setup is generally used for activities requiring frequent standing or movement (like dining), but it is poor for students as it causes them to slouch forward to reach their work, leading to "round shoulders." * **Zero Desk:** The edge of the desk and the edge of the seat are in the same vertical plane. While better than a plus desk, it does not provide the same postural support as a minus desk for intensive writing tasks. ### **High-Yield NEET-PG Pearls:** * **Ideal Desk Height:** Should be half the height of the student plus 3 cm. * **Ideal Chair Height:** Should be equal to the distance from the popliteal fossa to the floor (so feet rest flat). * **The "Rule of 90":** For optimal ergonomics, the elbows, hips, and knees should all ideally be at a 90-degree angle. * **Distance:** Always remember that for **writing**, a **Minus Distance** is mandatory to prevent kyphosis and eye strain.

Question 99: Lung cancer is an occupational hazard associated with which industry?

A. Chimney sweeping
B. Aniline industry
C. Gas industry (Correct Answer)
D. Benzene industry

Explanation: ### Explanation **Correct Option: C. Gas Industry** Occupational lung cancer is primarily associated with exposure to polycyclic aromatic hydrocarbons (PAHs), coal tar, and combustion products. Workers in the **gas industry** (specifically coal gasification) are exposed to high concentrations of these volatile coal-tar distillates. The International Agency for Research on Cancer (IARC) classifies "Coal gasification" as a Group 1 carcinogen. Other industries linked to lung cancer include asbestos mining, nickel refining, and chromate manufacturing. **Analysis of Incorrect Options:** * **A. Chimney Sweeping:** This is classically associated with **Squamous Cell Carcinoma of the Scrotum** (Percivall Pott’s cancer), the first recognized occupational cancer. While they have a risk of lung cancer, the "textbook" association for chimney sweeps is scrotal cancer. * **B. Aniline Industry:** Exposure to aromatic amines (like benzidine and 2-naphthylamine) in the aniline dye and rubber industries is a major risk factor for **Urinary Bladder Cancer**. * **D. Benzene Industry:** Benzene exposure (common in petroleum and chemical industries) is strongly linked to hematological malignancies, specifically **Acute Myeloid Leukemia (AML)**. **High-Yield Clinical Pearls for NEET-PG:** * **Most common occupational cancer:** Skin cancer (due to UV/polycyclic hydrocarbons). * **Bladder Cancer:** Associated with aromatic amines (Dye/Rubber industry). * **Angiosarcoma of Liver:** Associated with Vinyl Chloride (PVC industry). * **Mesothelioma:** Specifically linked to Asbestos (Crocidolite variety). * **Beryllium:** Associated with lung cancer and sarcoid-like granulomas (Berylliosis). * **Rule of Thumb:** If "Lung Cancer" is the question and "Asbestos" isn't an option, look for Gas/Coke oven workers or Chromates.

Question 100: Which of the following is NOT a social security act for industrial workers?

A. Workmen's Compensation Act
B. Central Maternity Benefit Act
C. Factories Act
D. Employment and Labour Act (Correct Answer)

Explanation: **Explanation:** In Occupational Health, **Social Security** refers to the protection provided by society to its members through a series of public measures against economic and social distress. The **Employment and Labour Act** is the correct answer because it is a generic term and does not exist as a specific, standalone social security legislation in India. While there are various "Labour Laws," this specific title is not a recognized act providing social security benefits. **Analysis of Incorrect Options:** * **Workmen's Compensation Act (1923):** One of the earliest social security measures in India. it provides for the payment of compensation by certain classes of employers to their workers for injury by accident or occupational diseases arising out of employment. * **Central Maternity Benefit Act (1961):** A vital social security act that regulates the employment of women in certain establishments for certain periods before and after childbirth and provides for maternity benefits (paid leave and medical bonus). * **Factories Act (1948):** While primarily a health and safety act, it is considered a pillar of industrial legislation. It contains provisions for the health, safety, and welfare of workers (e.g., washing facilities, first aid, creches), which fall under the broader umbrella of social security and worker protection. **High-Yield NEET-PG Pearls:** * **ESI Act (1948):** The most comprehensive social security legislation in India. It covers medical, sickness, maternity, disablement, and dependent benefits. * **Pneumoconiosis:** Under the Workmen’s Compensation Act, several occupational lung diseases (Silicosis, Anthracosis, Byssinosis) are compensable. * **Maternity Benefit:** Under the 2017 amendment, the duration of paid maternity leave was increased from 12 to **26 weeks**. * **Factories Act:** Requires a mandatory **Safety Officer** if a factory employs 1,000 or more workers.

Practice by Chapter

Occupational Hazards: Classification

Practice Questions

Occupational Diseases

Practice Questions

Ergonomics

Practice Questions

Industrial Toxicology

Practice Questions

Occupational Cancers

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Work-Related Musculoskeletal Disorders

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Occupational Health Services

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Industrial Hygiene

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Assessment of Work Environment

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Personal Protective Equipment

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Occupational Health Legislation

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Workers' Compensation

Practice Questions

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