specialized masonry chamber equipped with an automatic siphonic discharge mechanism built at the head of flat-gradient sewer branches.
Periodically discharges a large volume of water at high velocity to scour and flush out settled sludge, grit, and solids, effectively preventing clogging in sewer pipes. (Correct answer: Option 3)
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17
ICAR JRF Environmental Sciences 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Under which rule of Government, guidelines for solid waste management are followed today?
Comprehensive national statutory guidelines promulgated by the Ministry of Environment, Forest and Climate Change (MoEFCC) under the Environment (Protection) Act, 1986.
Superseded the earlier Municipal Solid Waste (Management and Handling) Rules, 2000, mandating source segregation into wet, dry, and domestic hazardous waste streams. (Correct answer: Option 4)
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18
ICAR JRF Environmental Sciences 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Biological method of soil remediation includes of contaminants.
Microbial Transformation: Biological soil remediation (bioremediation) functions primarily through the metabolic and enzymatic transformation of toxic organic contaminants into harmless end-products (such as $\text{CO}_2$, $\text{H}_2\text{O}$, and non-toxic biomass).
Distinction from Physical Methods: Vitrification and soil washing are physical/thermal methods, whereas bioleaching specifically dissolves metal ores/sulfides through microbial acid generation.
Correct option: (2) Transformation
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19
ICAR JRF Environmental Sciences 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Botanical Survey of India (BSI) located in Kolkata, West Bengal, India was established in the year:
Apex taxonomic and floristic research organization under the Government of India, headquartered in Kolkata, West Bengal.
Formally established on 13 February 1890 under the direction of Sir George King to explore and catalog the plant wealth of the Indian subcontinent. (Correct answer: Option 3)
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20
ICAR JRF Environmental Sciences 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Environmental science is defined by which of the following statements?
An integrated, multidisciplinary academic discipline that analyzes the systemic interactions and energy/matter flows between the environment's physical, chemical, and biological components, alongside human impacts on natural ecosystems. (Correct answer: Option 4)
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