Occupational Health and Legislation (ESI, Factories Act) MCQs

Community Medicine (PSM) · 145 free questions with answers & explanations.

1. A 45-year-old sandblaster develops progressive exertional dyspnoea with bilateral upper lobe fibrosis and eggshell calcification of hilar lymph nodes on chest X-ray. What is the most likely diagnosis?
2. Under the Employees' State Insurance (ESI) Act 1948, which category of employees is mandatorily covered?
3. Since the 2019 ESIC revision, the employer's contribution rate under the ESI Act 1948 (as a percentage of wages) is:
4. Byssinosis is an occupational lung disease caused by dust from which material, and its characteristic symptom pattern is known as:
5. A 45-year-old sandblaster presents with progressive breathlessness, bilateral upper-zone nodular opacities on chest X-ray, and an accelerated form of the disease after only 5 years of exposure. He has also been diagnosed with pulmonary tuberculosis. This combination is termed:
6. Under the Employees' State Insurance (ESI) Act 1948, which of the following benefits is provided to an insured employee who sustains a permanent partial disablement due to an employment injury?
7. A worker in a stone quarry develops progressive dyspnoea over 15 years. Chest X-ray shows bilateral upper lobe fibrosis with egg-shell calcification of hilar nodes. Which lung function test finding is MOST characteristic of this condition?
8. Under the Employees' State Insurance (ESI) Act 1948, which of the following benefits is NOT provided under the ESI scheme?
9. Under the Employees' State Insurance (ESI) Act 1948, which of the following is a Statutory Benefit provided ONLY to insured persons (not dependents)?
10. Under the Factories Act 1948, a factory with hazardous processes must maintain which of the following specific worker health records?
11. A 45-year-old sandblaster presents with progressive exertional dyspnoea and a chest X-ray showing bilateral upper-zone nodular shadows with 'eggshell calcification' of hilar lymph nodes. His FEV1/FVC ratio is 0.65. The MOST likely diagnosis and the occupational exposure responsible are:
12. Under the Employees' State Insurance (ESI) Act 1948, 'Sickness Benefit' is payable at what rate and for what maximum duration?
13. A 42-year-old sandstone quarry worker develops progressive dyspnoea, weight loss, and bilateral upper lobe opacities with 'eggshell' calcification of hilar lymph nodes on chest X-ray. He has no history of TB exposure. The most likely diagnosis and its medicolegal classification is:
14. Under the ESI Act 1948, the contribution rate for the insured person (employee) towards the ESI fund (as of current rates) is:
15. In occupational dust exposure, the term 'respirable dust fraction' refers to particles of which aerodynamic diameter that reach the alveoli?
16. Under the Employees' State Insurance (ESI) Act 1948, an employee earning above which MONTHLY wage threshold is currently excluded from ESI coverage?
17. A 38-year-old foundry worker presents with progressive exertional dyspnoea. Chest X-ray shows bilateral upper lobe small rounded opacities with eggshell calcification of hilar lymph nodes. The MOST likely diagnosis and its causative dust are:
18. Under the Employees' State Insurance (ESI) Act 1948, which of the following benefits is payable to an insured employee who is rendered permanently totally disabled due to an employment injury?
19. A worker exposed to silica dust develops a restrictive lung disease 15 years after first exposure. The diagnosis is silicosis. Under ESI Act, for this occupational disease to attract benefits, the employer-employee relationship must be from an ESI-covered establishment. The latency of silicosis is a challenge because:
20. Biological Exposure Indices (BEIs) in occupational health differ from Threshold Limit Values (TLVs) in that:
21. A 45-year-old sandblaster presents with progressive exertional dyspnea and a chest X-ray showing bilateral upper-zone nodular opacities with 'eggshell calcification' of hilar lymph nodes. He has worked in a foundry for 18 years. Which occupational lung disease does this MOST likely represent?
22. A cement factory worker presents with chest tightness and wheezing that consistently worsens on Monday mornings and improves by Friday evening. He is asymptomatic on weekends. This pattern is MOST consistent with:
23. Under the Employees' State Insurance (ESI) Act 1948, the employer's contribution rate as a percentage of wages payable to the ESIC has been reduced to which current rate (as per the 2019 amendment)?
24. A worker is employed in a factory where he is exposed to organic mercury compounds. Which of the following target organ manifestations is MOST specific to organic mercury toxicity compared with inorganic mercury?
25. The Threshold Limit Value-Short Term Exposure Limit (TLV-STEL) is defined as:
26. A painter using spray paint without adequate respiratory protection develops peripheral neuropathy predominantly affecting the lower limbs after 3 years of exposure. The MOST likely causative neurotoxicant is:
27. The Factories Act 1948 mandates certain welfare provisions in factories employing a specified number of workers. Creche facilities are mandatory in factories employing women workers. The threshold number of women workers that triggers mandatory creche provision under this Act is:
28. Caplan syndrome is a specific entity seen in coal miners with rheumatoid arthritis. The radiological finding that distinguishes Caplan syndrome from simple progressive massive fibrosis in coal workers is:
29. A 45-year-old sandblasting worker presents with progressive dyspnoea and X-ray showing bilateral upper-zone nodular opacities with eggshell calcification of hilar lymph nodes. The most specific radiological finding that differentiates his occupational disease from sarcoidosis is:
30. Under the Employees' State Insurance Act 1948, the wage ceiling for ESI coverage has been revised. An employee drawing a salary up to which monthly amount is currently covered under ESI?
31. The Factories Act 1948 mandates appointment of a Safety Officer in factories employing more than how many workers?
32. A shipbreaking yard worker is found to have pleural plaques on CT chest, with restrictive pattern on PFT and a history of 20 years of asbestos exposure. The MOST characteristic neoplastic complication specifically linked to asbestos (not seen with silica) is:
33. A battery manufacturing worker shows blood lead level (BLL) of 48 µg/dL. According to occupational health guidelines, the appropriate action is:
34. A factory making polyurethane foam uses toluene diisocyanate (TDI). Several workers develop asthma-like symptoms that worsen on work days and improve on weekends. The mechanism of TDI-induced occupational asthma DIFFERS from classical allergic asthma because:
35. A 38-year-old sandblasting worker presents with progressive dyspnoea and productive cough. Chest X-ray reveals bilateral upper-zone nodular opacities with 'eggshell calcification' of hilar lymph nodes. Pulmonary function tests show a mixed restrictive-obstructive pattern. The causative occupational exposure and the pathological lesion is:
36. Under the Factories Act 1948, a factory is defined as a premises employing at least how many workers for power-using factories, and what is the threshold for non-power using factories?
37. A 45-year-old dry-cell battery manufacturing worker presents with gum line pigmentation ('Burton's line'), wrist drop, encephalopathy, and basophilic stippling on peripheral blood smear. Occupational exposure to which metal is responsible?
38. Under the Employees' State Insurance (ESI) Act 1948, the wage ceiling for compulsory coverage was revised in 2017. Which of the following is the CURRENT statutory threshold for ESI coverage of employees?
39. The Biological Exposure Index (BEI) in occupational health is BEST described as:
40. Vibration-induced white finger (VWF) is classified using the Stockholm Workshop Scale. A 52-year-old quarry driller reports intermittent blanching of the 2nd and 3rd fingers of both hands on cold exposure, with numbness and sensory loss even in warm weather. This presentation corresponds to which stage of VWF?
41. An epidemiological investigation into an epidemic of lung cancer among uranium miners in the Czech Republic demonstrated a synergistic (supramultiplicative) interaction between radon gas exposure and cigarette smoking. In a 2×2 interaction table, which model of interaction does this BEST illustrate?
42. A 42-year-old stone quarry worker presents with progressive exertional dyspnoea and bilateral upper-lobe nodular opacities on chest X-ray. He had 18 years of exposure to crystalline silica dust. His condition represents which stage on the ILO 2011 international classification of occupational radiographs?
43. The Factories Act 1948 mandates that a factory employing __ or more workers must have an occupational health centre with a full-time factory medical officer:
44. The Employees' State Insurance (ESI) Act 1948 provides sickness benefit at __ % of the average daily wage for a maximum of __ days per year:
45. Occupational asthma caused by toluene di-isocyanate (TDI) in a polyurethane foam factory worker is best characterised by which feature that distinguishes it from non-occupational asthma?
46. Lead poisoning in battery workers causes inhibition of which two specific enzymes, producing elevated urinary aminolaevulinic acid (ALA) and erythrocyte zinc protoporphyrin (ZPP) as biomarkers?
47. A textile worker has chronic exposure to cotton dust for 15 years. He describes tight chest and breathlessness every Monday morning upon returning to work, which improves by mid-week. This classic symptom pattern is diagnostic of:
48. Under ILO conventions, 'Noise-Induced Hearing Loss' (NIHL) is an occupational disease when cumulative noise exposure exceeds:
49. A 45-year-old coal miner presents with progressive massive fibrosis (PMF) after 20 years of underground work. The chest X-ray shows bilateral upper lobe opacities with background nodularity (category 3 by ILO classification). Which occupational lung disease does PMF represent the advanced form of?
50. Under the Employees' State Insurance (ESI) Act 1948, what is the wage ceiling for mandatory ESI coverage of employees in establishments covered under the Act?
51. A shipyard worker develops mesothelioma 35 years after occupational asbestos exposure. This extremely long lag period (latency) between exposure and disease onset BEST illustrates which principle of occupational disease causation?
52. In evaluating an occupational health hazard, the Threshold Limit Value–Short Term Exposure Limit (TLV-STEL) is defined as:
53. A textile worker presents with chest tightness, cough, and wheeze that consistently worsen on the first day of the working week (Monday) and improve on weekends. The responsible aetiological agent is:
54. Under the Factories Act 1948, which of the following provisions specifically governs occupational health of workers in hazardous industries through mandatory medical examinations?
55. A battery manufacturing worker develops gum pigmentation, peripheral neuropathy with wrist drop, and cognitive decline. The MOST appropriate investigation to confirm occupational exposure is:
56. A 42-year-old coal miner presents with progressive exertional dyspnoea and bilateral upper lobe nodular opacities on chest X-ray. Spirometry shows FEV1/FVC ratio of 0.72. The MOST probable diagnosis and its classical radiological eponym are:
57. The Factories Act 1948, Section 87, grants the State Government power to declare a 'hazardous process'. Under Schedule relating to permissible levels, the Threshold Limit Value – Time Weighted Average (TLV-TWA) for carbon monoxide is 25 ppm (ACGIH 2023). If a worker is exposed to CO at 50 ppm for 6 hours and 10 ppm for 2 hours, the 8-hour TWA is:
58. Vinyl chloride monomer (VCM) exposure in PVC manufacturing plants is classically associated with which specific rare hepatic malignancy?
59. Under the Employees' State Insurance (ESI) Act 1948, 'Employment Injury Benefit' provides cash compensation for incapacity resulting from occupational disease. The contribution rate structure (as amended in 2019) for employers in most Indian states is:
60. A construction worker develops mesothelioma 35 years after occupational asbestos exposure ended. This long latency period best illustrates which epidemiological concept?
61. The 'Healthy Worker Effect' produces which systematic error in occupational epidemiology studies?
62. A petrochemical worker develops anaemia, leucopenia and thrombocytopenia after chronic benzene exposure. The TARGET cell type and mechanism of haematotoxicity is:
63. Under the Mines Act 1952, the prescribed maximum permissible exposure limit for respirable crystalline silica dust in metal mines is 0.1 mg/m³ (BIS). A miner works 10 hours per day instead of the standard 8 hours. Using the Brief and Scala model, the adjusted permissible limit for the 10-hour shift is approximately:
64. A miner working in silica-rich underground mines for 15 years presents with progressive dyspnoea, upper lobe fibrosis on HRCT, and 'eggshell' calcification of hilar lymph nodes. He develops Mycobacterium tuberculosis co-infection. This combination is called:
65. Under the Employees' State Insurance (ESI) Act 1948, the wage ceiling for compulsory ESI coverage for workers was revised to which amount (as of the latest notification)?
66. A chemical plant worker exposed to vinyl chloride monomer (VCM) for 20 years develops right upper quadrant pain, hepatomegaly, and a hepatic mass on imaging. The MOST likely occupational malignancy is:
67. In the context of occupational noise-induced hearing loss (NIHL), the OSHA (and Indian DGFASLI) permissible exposure limit for continuous noise is 90 dB(A) for an 8-hour workday. If noise intensity increases by 5 dB(A) to 95 dB(A), the permissible exposure duration is halved to:
68. Under the Factories Act 1948 in India, a 'hazardous process' factory must establish an Occupational Health Centre (OHC) if it employs more than:
69. A 45-year-old cotton textile worker presents with progressive breathlessness that is worst on Mondays (first day after weekly rest) and improves as the week continues. Spirometry shows reversible airflow obstruction. This 'Monday morning fever/tightness' pattern is pathognomonic of:
70. Under the Factories Act 1948 (as amended), the threshold for applicability of the Act to a manufacturing process using power is:
71. A 38-year-old sandblasting worker presents with progressive exertional dyspnoea and bilateral upper-lobe eggshell calcification on chest X-ray. His condition is complicated by concomitant tuberculosis. The condition associated with highest risk of concomitant tuberculosis among the pneumoconioses is:
72. Under the Employees' State Insurance (ESI) Act 1948, the wage limit for compulsory coverage of employees (as per the most recent revision) is:
73. A battery manufacturing plant worker presents with wrist drop (extensor weakness), basophilic stippling of red blood cells, and elevated blood lead level of 55 µg/dL. According to NIOSH/BEI guidelines, chelation therapy should be initiated when blood lead level in adults exceeds:
74. In mesothelioma caused by asbestos exposure, the latency period between first exposure and disease manifestation is characteristically:
75. A shipyard painter using antifouling paint develops cerebellar ataxia, tunnel vision, and sensorineural deafness. Blood investigations show elevated urinary mercury. The organic mercury compound most likely responsible is:
76. A 45-year-old sandstone quarry worker presents with progressive dyspnoea, cough, and bilateral upper lobe fibrosis on X-ray. He also tests positive for sputum AFB. The co-existence of silicosis and tuberculosis is termed:
77. Under the Factories Act 1948, the threshold for a 'Factory' requiring statutory registration and compliance is a premises employing:
78. A battery manufacturing worker is found to have blood lead level (BLL) of 55 µg/dL on routine surveillance. According to occupational health guidelines, the action level for mandatory removal from further lead exposure is a BLL of:
79. Byssinosis, an occupational lung disease, is caused by exposure to which specific organic dust, and the characteristic feature distinguishing it from other occupational lung diseases is:
80. Under the Employees' State Insurance (ESI) Act 1948, the employer's contribution rate and employee's contribution rate as a percentage of gross wages (as per 2019 revision) are respectively:
81. A shipyard worker with 20 years of asbestos exposure presents with pleural effusion, calcified pleural plaques on X-ray, and normal lung parenchyma. He has no dyspnoea at rest. This presentation is most consistent with:
82. Under the Employees' State Insurance (ESI) Act 1948, which category of benefit provides cash compensation for permanent partial disablement resulting from employment injury?
83. Coal workers' pneumoconiosis (CWP) progresses to 'progressive massive fibrosis' (PMF) when the lung lesion size exceeds:
84. The permissible exposure limit (PEL) for noise in an occupational setting under India's Factories Act is:
85. A worker in a battery manufacturing plant presents with wrist drop (extensor palsy), blue line on gums (Burton's line), and basophilic stippling on blood film. The causative heavy metal is:
86. Byssinosis, an occupational lung disease caused by cotton dust exposure, is characterized by its symptom pattern as:
87. A worker in a silica dust-exposed environment develops progressive massive fibrosis (PMF) with bilateral upper lobe fibrotic masses and eggshell calcification of hilar nodes on CXR. The ILO classification of pneumoconioses would categorize this as:
88. Under the Employees' State Insurance Act 1948 (ESI Act), the wage ceiling for compulsory ESI coverage (as revised in 2017) is:
89. A factory employing 500 workers is required under the Factories Act 1948 to provide a canteen. As per which Schedule amendment (specific to canteen requirement), this obligation applies to factories employing:
90. Mesothelioma is the hallmark malignancy of asbestos exposure. Which fibre type carries the HIGHEST carcinogenic risk for mesothelioma?
91. A 55-year-old coal miner with 25 years of underground mining presents with progressive dyspnoea and bilateral upper lobe nodular opacities with 'eggshell' calcification of hilar lymph nodes on CT chest. The most likely diagnosis is:
92. The Employees' State Insurance (ESI) Act, 1948 provides coverage to employees in non-seasonal power-using factories employing at least how many persons?
93. Occupational exposure to vinyl chloride monomer (VCM) is specifically associated with which rare hepatic tumour?
94. A 48-year-old coal miner presents with progressive dyspnoea and a chest X-ray showing bilateral upper-zone nodular opacities with eggshell calcification of hilar lymph nodes. Which occupational lung disease is MOST likely?
95. The Employees' State Insurance (ESI) Act, 1948 is applicable to factories and establishments employing a minimum of how many workers (as per current threshold)?
96. A shoe factory worker presents with jaundice, anaemia, and peripheral neuropathy. He is found to have chronic occupational exposure to which solvent MOST likely responsible for this triad?
97. A garment factory worker develops progressive exertional dyspnoea, fine crackles at lung bases, and a restrictive pattern on spirometry after 15 years of cotton dust exposure. The MOST likely diagnosis is:
98. Under the Employees' State Insurance (ESI) Act 1948, the employer's contribution to the ESI fund (as % of wages, current rate) is:
99. The Permissible Exposure Limit (PEL) concept in occupational health represents:
100. Pneumoconiosis caused by inhalation of coal dust is called anthracosis. In coal workers, the most significant pathological progression is from simple coal workers' pneumoconiosis (CWP) to progressive massive fibrosis (PMF). PMF is defined radiologically as a lesion of size:
101. Under the Employees' State Insurance (ESI) Act 1948, which of the following is a contributory benefit that requires a minimum contribution period before eligibility?
102. Byssinosis is an occupational lung disease seen in cotton textile workers. Which of the following BEST describes the characteristic symptom pattern of byssinosis?
103. Silicosis is the occupational lung disease caused by inhalation of silica dust. The occupational group at highest risk is:
104. The Employees' State Insurance (ESI) Act, 1948 covers employees whose daily wage/salary does not exceed which threshold (as updated)?
105. A worker in a battery manufacturing plant presents with abdominal colic, wrist drop, and blue line on gingival margin. The most likely diagnosis is poisoning due to:
106. Silicosis is an occupational lung disease caused by inhalation of free crystalline silica. Which form of silica is MOST fibrogenic?
107. The Employee State Insurance (ESI) Act 1948 defines a 'factory' for coverage purposes as an establishment with a power-driven factory employing how many workers?
108. Compressed air disease (Caisson disease / decompression sickness) primarily results from:
109. Byssinosis, an occupational lung disease among cotton textile workers, is characterised by Monday morning fever and chest tightness. The causative agent is:
110. Under the Employees' State Insurance Act (1948), what is the income ceiling for ESI coverage for employees in India (revised 2017)?
111. A worker develops progressive massive fibrosis (PMF) with bilateral upper-lobe opacities on chest X-ray after 15 years in a coal mine. Which occupational disease does this represent, and what is the minimum silica content needed in coal dust to cause this condition?
112. Byssinosis is an occupational lung disease caused by inhalation of dust from:
113. Under India's Employees' State Insurance (ESI) Act 1948, the wage ceiling for mandatory ESI coverage of employees is currently:
114. A worker in a printing press develops Raynaud's phenomenon, peripheral neuropathy and a positive urine coproporphyrin test. Which occupational toxin is most likely responsible?
115. Caplan's syndrome is the association of rheumatoid arthritis with pneumoconiosis most characteristically seen in workers exposed to:
116. Under the Employees' State Insurance (ESI) Act, 1948, the wage ceiling for compulsory coverage in India was enhanced to:
117. A worker in a stone quarry develops progressive massive fibrosis on chest X-ray. He also has accelerated progression to TB. The occupational exposure responsible is:
118. A coal miner develops progressive massive fibrosis (PMF) of the lungs due to long-term coal dust exposure. The disease is classified as:
119. Under the Factories Act 1948 (as amended), the maximum permissible hours of work per week for an adult worker are:
120. Under the Employees' State Insurance (ESI) Act 1948, the ESI scheme currently covers insured workers earning a monthly wage up to:
121. A factory worker exposed to crystalline silica dust for 20 years develops progressive dyspnea and bilateral upper-lobe nodular shadows on chest X-ray. He continues working. Which specific form of pneumoconiosis does he most likely have?
122. Under the Employees' State Insurance (ESI) Act 1948, which of the following is NOT an insured benefit provided under the scheme?
123. The ILO classification of pneumoconiosis radiographs categorizes profusion of small opacities on a scale of:
124. A 35-year-old welder develops progressive massive fibrosis after 12 years of work. His chest X-ray shows 'egg-shell' calcification of hilar lymph nodes. The MOST likely diagnosis is:
125. Under the Employees' State Insurance (ESI) Act 1948, which of the following is NOT a contributory benefit?
126. Threshold Limit Value-Time Weighted Average (TLV-TWA) for occupational exposure to a chemical represents the concentration that:
127. Asbestosis is caused by inhalation of asbestos fibres. The pathognomonic radiological finding is:
128. Under the Employees' State Insurance (ESI) Act 1948, the wage ceiling for coverage was revised to:
129. The Threshold Limit Value-Short Term Exposure Limit (TLV-STEL) for a chemical refers to:
130. A factory worker who has been repeatedly exposed to vinyl chloride monomer for 15 years presents with hepatic angiosarcoma. Which occupational classification of carcinogens BEST fits vinyl chloride monomer?
131. Under the Employees' State Insurance (ESI) Act 1948, what is the wage ceiling for mandatory ESI coverage (as revised in 2017)?
132. Which pneumoconiosis characteristically shows 'eggshell calcification' of hilar lymph nodes on chest radiograph?
133. A construction worker is referred for health assessment after 20 years of asbestos exposure. He currently has no symptoms. Which periodic monitoring is MOST important in his surveillance?
134. A 45-year-old sandstone quarry worker presents with progressive dyspnoea, dry cough, and bilateral upper-lobe fibrosis on chest X-ray showing eggshell calcification of hilar lymph nodes. He has worked in the quarry for 20 years. The most likely diagnosis is:
135. A municipal water treatment engineer checks the residual chlorine level at the consumer's tap. According to the Bureau of Indian Standards and WHO guidelines, the minimum acceptable free residual chlorine at the point of delivery should be:
136. Workers in a battery manufacturing plant are found to have blood lead levels of 45 µg/dL. In addition to removing them from exposure, which clinical finding would be MOST SPECIFIC for chronic inorganic lead poisoning?
137. A noise-induced hearing loss (NIHL) survey is conducted in a textile mill. Workers are found to have Threshold Shift (TTS) in the 4000 Hz frequency range. Which of the following statements about NIHL is CORRECT?
138. A public health inspector investigates a case of methane gas accumulation and explosion in a municipal sewer. Methane is an example of which type of air pollutant, and which health hazard does high-concentration methane most directly cause?
139. A 50-year-old asbestos cement factory worker is diagnosed with mesothelioma of the pleura. Which type of asbestos fibre carries the HIGHEST risk of mesothelioma?
140. Which occupational lung disease is caused by inhalation of free crystalline silica (quartz) dust and is characterised by simple, accelerated, and acute forms, with the acute form associated with short high-dose exposure?
141. Under the Employees' State Insurance (ESI) Act, 1948, which workers are mandatorily covered?
142. Occupational asthma due to isocyanate exposure in paint and foam manufacturing workers is BEST classified as which type of occupational lung disease?
143. Byssinosis, an occupational lung disease, is caused by exposure to dust from which material and is characterized by the 'Monday morning syndrome'?
144. The 'hierarchy of controls' for occupational hazard prevention, from most to least effective, is:
145. Progressive Massive Fibrosis (PMF) in coal miners' pneumoconiosis is distinguished from simple CWP primarily by: