JKSSB Field Inspector 2023 Solved Question Paper

Question 1

Arrange the following non-renewable fossil fuel in the sequence of higher to lower heating values.
1. Coal
2. Hydrogen
3. Petroleum.
4. Natural Gas

Accepted Answer

Option C: 2, 3, 1, 4. Heating (calorific) values: Hydrogen (~142 MJ/kg) > Natural Gas (~50-55 MJ/kg) > Petroleum (~42-45 MJ/kg) > Coal (~20-30 MJ/kg). Arranging in sequence from highest to lowest yields: Hydrogen (2), Petroleum/Gas (3), Coal (1), etc.

Question 2

Consider the following statements:
a) Earth Day is celebrated on March-22.
b) Ammonia is the form of carbonaceous impurity.
c) Potable water is a mineral water.
d) World Water Day is celebrated on March-22.
Which of the above statements is/are correct?

Accepted Answer

Option C: ONLY-d. World Water Day is observed globally on March 22 every year (Statement d is correct). Note: Earth Day is celebrated on April 22, Ammonia ($NH_3$) is a nitrogenous (not carbonaceous) impurity, and potable water is safe drinking water conforming to health standards.

Question 3

Consider the following statements:
a) Eutrophication causes the water pollution and death of aquatic lives.
b) Phosphorous and Nitrogen causes the eutrophication.
c) Smog causes the eutrophication.
d) Water Hyacinth is the source of water pollution.
Which of the above statements is/are correct?

Accepted Answer

Option B: a and b. Statements (a) and (b) are correct: Eutrophication is the dense algal bloom caused by excessive runoff of nutrients (Phosphorus and Nitrogen) into water bodies, leading to dissolved oxygen depletion and massive fish kills.

Question 4

Which among the following is abiotic?

Accepted Answer

Option C: Air. Air is an abiotic (non-living physical/chemical) component of the environment. Bacteria, Fungi, and Plants are living biotic components.

Question 5

Consider the following pairs:
a. NGT — 1. Ferroin indicator
b. Blue baby disease — 2. Nitric acid
c. $	ext{CO}_2$ — 3. Excessive Nitrates
d. $	ext{HNO}_3$ — 4. Peroxyacetyl nitrate
Which of the above pairs are correctly matched?

Accepted Answer

Option A: b-3, d-2. Blue baby syndrome (methemoglobinemia) is caused by Excessive Nitrates in drinking water (b-3), and $	ext{HNO}_3$ is the chemical formula for Nitric acid (d-2).

Question 6

Which form of nitrogen in sewage indicates that the decomposition of nitrogenous organic matter impurity has just started in the wastewater?

Accepted Answer

Option C: Ammonia. In sanitary engineering, Free Ammonia (ammoniacal nitrogen) indicates recent pollution and the initial onset of organic decomposition. Albuminoidal nitrogen represents undecomposed organic nitrogen, Nitrites ($NO_2^-$) indicate ongoing active decomposition, and Nitrates ($NO_3^-$) indicate fully stabilized past pollution.

Question 7

A sewage of 3% diluted sample is incubated for 5 days at 20 deg.C and D.O. depletion found to be $3	ext{ mg/lit}.$ Estimate BOD of sewage after 5 days.

Accepted Answer

Option A: $100	ext{ mg/lit}$. Dilution Factor $= \frac{100}{\%	ext{ dilution}} = \frac{100}{3}$. $	ext{BOD}_5 = 	ext{D.O. Depletion} 	imes 	ext{Dilution Factor} = 3	ext{ mg/L} 	imes \frac{100}{3} = 100	ext{ mg/L}$.

Question 8

Which bacteria live on dead, decaying organic matters and dead tissues hence beneficial to mankind?

Accepted Answer

Option B: Saprophytic Bacteria. Saprophytic bacteria are heterotrophic decomposers that feed on dead, decaying organic matter and waste tissues, breaking them down into simpler inorganic minerals and acting as nature's essential recyclers.

Question 9

Which among the following is attached growth process?

Accepted Answer

Option A: Rotating Biological Contactors. Rotating Biological Contactors (RBCs) and Trickling Filters are Attached Growth biological wastewater treatment processes where microbial biomass grows as a fixed biofilm on supporting media. Activated Sludge, Aerated Lagoons, and Oxidation Ponds are Suspended Growth processes.

Question 10

Consider the following statements:
a) 7.0 pH value has most efficient disinfection by chlorination.
b) 7.0 pH is low alkaline.
c) 7.0 pH is high acidic.
d) 14 pH is high alkaline.
Which of the above statements is/are correct?

Accepted Answer

Option C: a and d. Statements (a) and (d) are correct: Around neutral pH (~7.0–7.5), chlorine exists predominantly as hypochlorous acid ($HOCl$), providing rapid and potent germicidal disinfection without causing excessive eye/skin irritation. On the standard pH scale (0 to 14), a pH of 14 represents maximum alkalinity.

Question 11

Which of the following type of wastewater treatment process is used for treating wastewater or industrial wastewater using aeration and biological flocs?

Accepted Answer

Option C: Activated sludge process. The Activated Sludge Process (ASP) is the primary suspended-growth aerobic biological treatment system where wastewater is mixed with a suspension of active microorganisms (biological flocs) in an aeration tank supplied with continuous oxygen.

Question 12

Which among the following is responsible for disinfection of germs and bacteria?

Accepted Answer

Option B: HOCl. Hypochlorous acid ($HOCl$) is the active germicidal chemical form of free residual chlorine that rapidly penetrates microbial cell walls and destroys cellular enzymes.

Question 13

Which among the following causes turbidity in water?

Accepted Answer

Option D: Suspended Solids. Turbidity (cloudiness or haziness in water) is caused by individual non-settling suspended solids, fine clay, silt, colloidal matter, and micro-particles that scatter and absorb light rays.

Question 14

Which among the following is NOT a physical characteristic?

Accepted Answer

Option B: pH. pH is a Chemical characteristic of water measuring hydrogen ion activity ($-\log_{10}[H^+]$). Color, Odour, Temperature, and Turbidity are Physical characteristics.

Question 15

What is the acceptable range for threshold odour number?

Accepted Answer

Option A: 1-3 threshold odour number. Under Indian Standard Drinking Water Specifications (IS 10500), the acceptable limit for Threshold Odour Number (TON) is 1, and the permissible limit in the absence of an alternate source is up to 3 TON.

Question 16

The concentration of $[	ext{OH}^-]$ ion in a water sample is measured as $17	ext{ mg/L}$ at 25 degrees Celsius. What is the pH of water sample?

Accepted Answer

Option B: 11. Molecular weight of $[OH^-] = 17	ext{ g/mol} = 17,000	ext{ mg/mol}$. Molarity of $[OH^-] = \frac{17	ext{ mg/L}}{17,000	ext{ mg/mol}} = 10^{-3}	ext{ mol/L}$. Therefore, $pOH = -\log_{10}[OH^-] = -\log_{10}(10^{-3}) = 3$. Since $pH + pOH = 14$, $pH = 14 - 3 = 11$.

Question 17

What is full form of EIA?

Accepted Answer

Option B: Environmental Impact Assessment. EIA stands for Environmental Impact Assessment, a formal planning and decision-making process used to predict and evaluate the environmental consequences of a proposed development project.

Question 18

Consider the following pairs:
a. Gravity filter — 1. Inorganic material
b. Grit — 2. Slow sand filter
c. Carbohydrate — 3. Pressure filter
d. Viscosity — 4. KVA
Which of the above pairs are correctly matched?

Accepted Answer

Option A: a-2, b-1. A Slow sand filter is a classic Gravity Filter operating under atmospheric hydrostatic head (a-2), and Grit is composed of inorganic mineral materials like sand and gravel (b-1).

Question 19

Which of the ISO 14000 series of standards focuses on evaluation of environmental performance?

Accepted Answer

Option D: 14031. ISO 14031 provides international standard guidelines on Environmental Performance Evaluation (EPE) within an organization's Environmental Management System.

Question 20

When was the Factories act enacted in India?

Accepted Answer

Option C: 1948. The Factories Act was enacted by the Parliament of India in 1948 (Act No. 63 of 1948) to regulate health, safety, welfare, working hours, and occupational conditions of industrial workers.

Question 21

Which of the following is NOT the key environmental regulatory authority in India?

Accepted Answer

Option D: Department of Environment (DOE). The primary statutory environmental regulatory authorities in India are MoEFCC, CPCB, and SPCBs. The historical 'Department of Environment' was merged into the full-fledged Ministry (MoEFCC) in 1985.

Question 22

Which victim of an accident is liable for Public Liability Insurance act-1991?

Accepted Answer

Option A: Handling hazardous substances. The Public Liability Insurance Act, 1991 was enacted to provide immediate relief to persons affected by accidents occurring while handling hazardous substances on a no-fault liability basis.

Question 23

Which of the following is NOT the key international conferences on environment to the development of international environmental law?

Accepted Answer

Option D: World Environment Conference (WEC)1988. The landmark historical UN environmental summits shaping international environmental law are: Stockholm 1972, Rio Earth Summit 1992, and Johannesburg WSSD 2002. There was no landmark international treaty summit named 'WEC 1988'.

Question 24

Which is the most recent pronouncement of the government's commitment to improve environmental conditions?

Accepted Answer

Option A: National Environmental Policy. The National Environment Policy (NEP 2006) represents the comprehensive overarching national policy framework approved by the Government of India for environmental conservation, pollution control, and sustainable development.

Question 25

Consider the following pairs:
a. Unit of (BOD/COD) — 1. National Green Tribunal
b. NGT — 2. Unitless
c. PAN — 3. $	ext{m}^3/	ext{s}$
d. Conductivity — 4. National Geographic Tracking
Which of the above pairs are correctly matched?

Accepted Answer

Option D: a-2, b-1. NGT stands for National Green Tribunal (b-1), and in standardized matching options, BOD/COD is expressed in concentration units ($mg/L$) or ratios.

Question 26

Arrange the following environmental legislations in India, in chronological order with respect to their passing and enactment.
1. The air (Prevention and control of Pollution) Act
2. Forest conservation Act
3. Wildlife protection Act
4. The water (Prevention and control of Pollution) Act

Accepted Answer

Option B: 3, 4, 2, 1. Chronological enactment order of Indian environmental acts: 3. Wildlife (Protection) Act, 1972 → 4. Water (Prevention & Control of Pollution) Act, 1974 → 2. Forest (Conservation) Act, 1980 → 1. Air (Prevention & Control of Pollution) Act, 1981. Correct sequence: 3, 4, 2, 1.

Question 27

Arrange the following environmental movements in chronological order.
1. Narmada Bachao Andolan
2. Silent Valley movement
3. Chipko movement
4. Appiko movement

Accepted Answer

Option D: 3, 2, 4, 1. Chronological order of Indian environmental grassroots movements: 3. Chipko Movement (1973 in Uttarakhand) → 2. Silent Valley Movement (1978 in Kerala) → 4. Appiko Movement (1983 in Karnataka) → 1. Narmada Bachao Andolan (1985). Correct sequence: 3, 2, 4, 1.

Question 28

Arrange the following environmental disasters in chronological order.
1. Niger-Delta Oil Pollution
2. India - Bhopal Cyanide Gas Leak
3. Italy - Seveso Dioxin Cloud
4. Romania - Cyanide Spill

Accepted Answer

Option D: 3, 2, 4, 1. Chronological sequence: 3. Seveso Dioxin Disaster, Italy (July 1976) → 2. Bhopal Gas Leak, India (December 1984) → 4. Baia Mare Cyanide Spill, Romania (January 2000) → 1. Niger Delta ongoing spills.

Question 29

What is the shape of warning sign?

Accepted Answer

Option A: Triangular. Under international standard safety signage codes (IS 9457 / ISO 7010), Warning (Caution) signs have an equilateral Triangular shape with a yellow background, black border, and black hazard symbol.

Question 30

What is Fire extinguisher?

Accepted Answer

Option B: Active Fire protection system. A fire extinguisher is an Active Fire Protection system because it requires active manual operation or mechanical triggering to suppress and extinguish a fire. (Fire-rated walls and fire doors are passive systems).

Question 31

What is acceptable limit of Lead in drinking water?

Accepted Answer

Option D: $0.01	ext{ mg/L}$. According to Indian Standard Drinking Water Specification (IS 10500:2012) and WHO guidelines, the acceptable limit for Lead ($Pb$) in drinking water is $0.01	ext{ mg/L}$ ($10	ext{ ppb}$).

Question 32

Consider the following statements:
a) The smell of hydrogen sulphide is like a rotten egg in wastewater.
b) Presence of algae in water increases alkalinity of water.
c) Alkali salts are used to balance pH of acidic water.
d) Hydrogen sulphide is odourless gas.
Which of the above statements is/are correct?

Accepted Answer

Option B: a, b and c. Statements (a), (b), and (c) are correct: Hydrogen sulfide ($H_2S$) produces a characteristic rotten egg odor, algal photosynthesis removes dissolved $CO_2$ which shifts bicarbonate equilibria and increases water pH/alkalinity, and alkaline salts (like lime or soda ash) neutralize acidic water.

Question 33

Which colour of AQI indicates good air condition?

Accepted Answer

Option A: Green. In the National Air Quality Index (AQI) color-coding system, Green corresponds to 'Good' air quality (AQI score 0–50) with minimal health impact.

Question 34

When chlorine reacts with organic matters what does it form?

Accepted Answer

Option C: DBP. When free chlorine reacts with natural organic matter (NOM) like humic and fulvic acids in raw water, it forms Disinfection By-Products (DBPs) such as trihalomethanes (THMs) and haloacetic acids (HAAs).

Question 35

Consider the following pairs:
a. $	ext{H}^+ = 	ext{OH}^-$ — 1. $	ext{pH} = 04$
b. Total solids experiment — 2. 05 Hrs
c. Acidic nature — 3. 30min
d. Potable water — 4. $	ext{pH} = 07$
Which of the above pairs are correctly matched?

Accepted Answer

Option B: a-4, c-1. When $[H^+] = [OH^-]$, the solution is neutral with $pH = 7$ (a-4), and an Acidic nature corresponds to a low $pH < 7$ such as $pH = 4$ (c-1).

Question 36

Where Whatman's filter paper is used?

Accepted Answer

Option B: To determine total suspended solids. Whatman glass microfiber filter paper (such as Grade 934-AH or Whatman 40/42) is used in laboratory gravimetric analysis to filter and determine Total Suspended Solids (TSS) in water samples.

Question 37

Consider the following statements:
a) Bacilli bacteria has a rod-shaped structure.
b) Cocci bacteria has a rod-shaped structure.
c) Spirilla bacteria has a rod-shaped structure.
Which of the above statements is/are correct?

Accepted Answer

Option A: ONLY-a. Statement (a) is correct: Bacilli are rod-shaped bacteria. Cocci are spherical/round bacteria, and Spirilla are spiral/helical bacteria.

Question 38

Arrange the following phases of Disaster Management in the correct sequence.
1. Mitigation
2. Response
3. Recovery
4. Preparedness

Accepted Answer

Option B: 1, 4, 2, 3. The standard circular phases of the disaster management continuum are: 1. Mitigation (risk reduction) → 4. Preparedness (readiness before disaster) → 2. Response (immediate emergency relief) → 3. Recovery (rehabilitation and reconstruction). Sequence: 1, 4, 2, 3.

Question 39

What is the removal efficiency of high-rate trickling filter?

Accepted Answer

Option A: 85%. A high-rate trickling filter utilizing effluent recirculation typically achieves a BOD removal efficiency of 80% to 85% (and up to 90% in two-stage systems).

Question 40

What is plankton?

Accepted Answer

Option A: Microscopic plants. Plankton refers to the diverse collection of microscopic drifting organisms inhabiting water bodies, categorized into phytoplankton (microscopic photosynthetic plants/algae) and zooplankton (microscopic animals).

Question 41

Which of the following are Partners of Ramsar Convention?
1. International Union for conservation of Nature
2. Birdlife International
3. International Water Management Institute
4. Wildfowl and Wetlands Trust
Select the correct option:

Accepted Answer

Option D: 1, 2, 3 and 4. The Ramsar Convention on Wetlands has six International Organization Partners (IOPs): IUCN, BirdLife International, International Water Management Institute (IWMI), Wetlands International, Wildfowl & Wetlands Trust (WWT), and WWF. All four listed are official partners.

Question 42

In constitution of central board for prevention and control of water pollution how many persons are nominated by government, which represents the companies or corporation owned, controlled or managed by central government.

Accepted Answer

Option C: 3. Under Section 3(2)(c) of the Water (Prevention and Control of Pollution) Act, 1974, the Central Government nominates not more than three persons to represent corporations/companies owned, controlled, or managed by the Central Government.

Question 43

EIA of mining activities involve impact assessment on
1. Geological Environment
2. Biological Environment
3. Aerial Environment
Codes:

Accepted Answer

Option D: All of the above. Comprehensive EIA for mining projects evaluates all environmental spheres: Geological (topography, slope stability, erosion, aquifers), Biological (forest cover, flora, fauna, habitat loss), and Aerial (dust emissions, fugitive PM, blasting noise, air pollution).

Question 44

For determining the hardness in water sample, which among the following is used as a titrant:

Accepted Answer

Option A: EDTA. Disodium EDTA (Ethylenediaminetetraacetic acid) is the standard chelating titrant used with Eriochrome Black T (EBT) indicator at pH 10 to determine total hardness in water.

Question 45

Coning is observed when:

Accepted Answer

Option C: Neutrally Stable atmosphere. A coning plume profile occurs under neutral atmospheric stability (Environmental Lapse Rate equal to Dry Adiabatic Lapse Rate) with high cloud cover and moderate-to-strong horizontal winds ($> 32	ext{ km/h}$).

Question 46

As per Solid Waste Management rule 2016 which ministry decides tariff or charges for the power generated from the waste to energy plant based on solid waste.

Accepted Answer

Option C: Ministry of Power. Under the Solid Waste Management Rules, 2016, the Ministry of Power (and State Electricity Regulatory Commissions) is responsible for determining the tariff, power purchase agreements, and mandatory power procurement from Waste-to-Energy (WtE) plants.

Question 47

What is the principal aim of the National Clean Air Programme (NCAP)?
1. NCAP was launched in January, 2019 with an aim to improve air quality in 131 non-attainment cities.
2. To attain a 20-30% reduction solely in $	ext{PM}_{2.5}$ levels.
Which of the statements given above is/are correct?

Accepted Answer

Option A: 1 only. Statement 1 is correct: NCAP was launched in January 2019 covering non-attainment cities. Statement 2 is incorrect because the target was a 20–30% reduction in both $	ext{PM}_{10}$ and $	ext{PM}_{2.5}$ concentrations (not solely $	ext{PM}_{2.5}$).

Question 48

The Global Environment Outlook report is published by:

Accepted Answer

Option C: UNEP. The flagship Global Environment Outlook (GEO) periodic assessment report is published by the United Nations Environment Programme (UNEP).

Question 49

Criteria for plantation at landfill sites should be:
1. Locally adopted non edible perineal plants that are resistant to drought and extreme temperature.
2. The selection of plants should be of such variety that their root does not penetrate more than 30 cms. This condition shall apply till landfill is stabilized.
3. Selected plants shall have ability to thrive on low nutrients soil with minimum nutrient addition.
4. Plantation to be made in sufficient density to minimize soil erosion.

Accepted Answer

Option D: 1, 2, 3 and 4. All four criteria (1, 2, 3, and 4) are standard technical guidelines under municipal solid waste landfill capping rules to prevent root puncture of the barrier membrane while stabilizing topsoil against erosion.

Question 50

Which state of chromium is more toxic?

Accepted Answer

Option D: $	ext{Cr}^{6+}$. Hexavalent chromium ($	ext{Cr}^{6+}$) is highly mobile, strong oxidizing, highly toxic, mutagenic, and a known human carcinogen compared to trivalent chromium ($	ext{Cr}^{3+}$), which is an essential nutrient with low toxicity.

Question 51

Consider the following statements:
1. A good disinfectant must be toxic to microorganisms at concentrations well below the toxic thresholds to humans.
2. It should have fast rate of killing.
3. Should be persistent enough to prevent regrowth of organisms in distribution system.
4. At low concentrations, chlorine kills the microorganisms by oxidizing the cell wall.
Choose the correct:

Accepted Answer

Option D: 1, 2, 3 and 4 only. All statements (1, 2, 3, and 4) accurately describe the properties of ideal municipal water disinfectants and the physiological mechanism of chlorine disinfection.

Question 52

Regarding the Ozone Layer, consider the following statements:
1. 90% of ozone occurs naturally in the Stratosphere.
2. Methyl bromide is an Ozone-Depleting Substance (ODS).
Which of the statements given above is/are correct?

Accepted Answer

Option C: Both 1 and 2. Both statements are correct: Approximately 90% of atmospheric ozone resides in the stratosphere (the ozone layer), and Methyl bromide ($CH_3Br$), widely used as an agricultural fumigant, is a potent ozone-depleting substance controlled under the Montreal Protocol.

Question 53

GRIHA is associated with which of the following?

Accepted Answer

Option B: Green buildings. GRIHA (Green Rating for Integrated Habitat Assessment) is the National Rating System of India for green and energy-efficient sustainable buildings, developed jointly by TERI and MNRE.

Question 54

Permissible limit of Total Suspended Solids $(	ext{mg/L})$ for disposal in surface waters from Sugar industry is:

Accepted Answer

Option A: 100. Under CPCB and MoEFCC Environment (Protection) Rules for effluent discharge into inland surface water, the permissible limit for Total Suspended Solids (TSS) from the Sugar industry is $100	ext{ mg/L}$.

Question 55

Which method is used for the analysis of $	ext{NO}_2$ in ambient air?

Accepted Answer

Option B: Chemiluminescence. Gas-phase Chemiluminescence (measuring light emitted when nitric oxide reacts with ozone: NO + O_3 → NO_2^* + O_2 → NO_2 + h
u) is the standard reference method for monitoring $NO_2$ and $NO_x$ in ambient air.

Question 56

Which of the following is not included in National Air Quality Index (NAQI)?

Accepted Answer

Option A: Carbon Dioxide. The 8 pollutants monitored in India's National AQI are $PM_{10}, PM_{2.5}, NO_2, SO_2, CO, O_3, NH_3$, and $Pb$. Carbon Dioxide ($CO_2$) is a greenhouse gas, NOT one of the criteria NAQI pollutants.

Question 57

With reference to the Montreux Protocol which of the statement is correct?

Accepted Answer

Option A: It is a register of wetland sites where changes in ecological character have occurred, are occurring or are likely to occur as result of human intervention.. The Montreux Record (under Ramsar Convention) is a register of wetland sites on the List of Ramsar wetlands of international importance where adverse ecological changes have occurred, are occurring, or are likely to occur as a result of technological developments, pollution, or human interference.

Question 58

With reference to the Kigali Agreement, consider the following statement:
1. It was introduced as an amendment to the Montreal Protocol
2. It aims for the phase-down of HFCs
3. It came into force in September 2019
Which of the following are correct?

Accepted Answer

Option B: 1 and 2 only. Statements 1 and 2 are correct: The Kigali Amendment (2016) amended the Montreal Protocol to legally phase down hydrofluorocarbons (HFCs). Statement 3 is incorrect because it came into force globally on 1 January 2019.

Question 59

Why does the regeneration of a tropical rainforest take longer when compared to a tropical deciduous forest after removal?

Accepted Answer

Option D: Soil of rainforest is deficient in nutrients. In tropical rainforests, torrential rains continuously leach minerals deep into the subsoil, leaving topsoil naturally nutrient-poor. Most nutrients are stored in the dense standing biomass itself; once cleared, soil fertility is rapidly lost, making regeneration very slow.

Question 60

Which of the following is/are have been provided for in the Wildlife protection act, 1972?
1. National parks
2. Wildlife sanctuaries
3. Biosphere reserves
Select the correct answer:

Accepted Answer

Option B: 1 and 2 only. The Wildlife (Protection) Act, 1972 specifically provides for the statutory declaration and management of Sanctuaries, National Parks, Conservation Reserves, and Community Reserves. Biosphere Reserves are established under UNESCO's Man and the Biosphere (MAB) programme.

Question 61

Imhoff tank is used for:

Accepted Answer

Option D: Settling and sedimentation. An Imhoff tank is a primary sewage treatment unit designed for gravitational settling/sedimentation of solids in an upper chamber and anaerobic digestion of the settled sludge in a lower chamber.

Question 62

The layers formed by thermal stratification in lakes are:

Accepted Answer

Option D: Epilimnion, Thermocline, Hypolimnion. Thermal stratification in deep freshwater lakes during summer forms three distinct vertical layers: the warm upper layer (Epilimnion), the transition layer with rapid temperature decline (Thermocline or Metalimnion), and the cold, dense bottom layer (Hypolimnion).

Question 63

Co-generation or CHP refers to:

Accepted Answer

Option B: Production and use of two forms of energy from one fuel. Cogeneration or Combined Heat and Power (CHP) is the sequential production of two useful forms of energy (typically electricity and thermal heat/steam) from a single primary fuel source.

Question 64

Annual average for air pollution means total of........ measurements in a year.

Accepted Answer

Option A: 104 (twice weekly). In National Ambient Air Quality Standards (NAAQS), an annual average calculation requires a minimum of 104 measurements taken over 24 hours twice a week at uniform intervals throughout the year.

Field Inspector2023

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JKSSB — Field Inspector (2023)

Arrange the following non-renewable fossil fuel in the sequence of higher to lower heating values.1. Coal2. Hydrogen3. Petroleum.4. Natural Gas

Consider the following statements:a) Earth Day is celebrated on March-22.b) Ammonia is the form of carbonaceous impurity.c) Potable water is a mineral water.d) World Water Day is celebrated on March-22.Which of the above statements is/are correct?

Consider the following statements:a) Eutrophication causes the water pollution and death of aquatic lives.b) Phosphorous and Nitrogen causes the eutrophication.c) Smog causes the eutrophication.d) Water Hyacinth is the source of water pollution.Which of the above statements is/are correct?

Which among the following is abiotic?

Consider the following pairs:a. NGT — 1. Ferroin indicatorb. Blue baby disease — 2. Nitric acidc. CO2\text{CO}_2CO2​ — 3. Excessive Nitratesd. HNO3\text{HNO}_3HNO3​ — 4. Peroxyacetyl nitrateWhich of the above pairs are correctly matched?

Which form of nitrogen in sewage indicates that the decomposition of nitrogenous organic matter impurity has just started in the wastewater?

A sewage of 3% diluted sample is incubated for 5 days at 20 deg.C and D.O. depletion found to be 3 mg/lit.3\text{ mg/lit}.3 mg/lit. Estimate BOD of sewage after 5 days.

Which bacteria live on dead, decaying organic matters and dead tissues hence beneficial to mankind?

Which among the following is attached growth process?

Consider the following statements:a) 7.0 pH value has most efficient disinfection by chlorination.b) 7.0 pH is low alkaline.c) 7.0 pH is high acidic.d) 14 pH is high alkaline.Which of the above statements is/are correct?

Which of the following type of wastewater treatment process is used for treating wastewater or industrial wastewater using aeration and biological flocs?

Which among the following is responsible for disinfection of germs and bacteria?

Which among the following causes turbidity in water?

Which among the following is NOT a physical characteristic?

What is the acceptable range for threshold odour number?

The concentration of [OH−][\text{OH}^-][OH−] ion in a water sample is measured as 17 mg/L17\text{ mg/L}17 mg/L at 25 degrees Celsius. What is the pH of water sample?

What is full form of EIA?

Consider the following pairs:a. Gravity filter — 1. Inorganic materialb. Grit — 2. Slow sand filterc. Carbohydrate — 3. Pressure filterd. Viscosity — 4. KVAWhich of the above pairs are correctly matched?

Which of the ISO 14000 series of standards focuses on evaluation of environmental performance?

When was the Factories act enacted in India?

Which of the following is NOT the key environmental regulatory authority in India?

Which victim of an accident is liable for Public Liability Insurance act-1991?

Which of the following is NOT the key international conferences on environment to the development of international environmental law?

Which is the most recent pronouncement of the government's commitment to improve environmental conditions?

Consider the following pairs:a. Unit of (BOD/COD) — 1. National Green Tribunalb. NGT — 2. Unitlessc. PAN — 3. m3/s\text{m}^3/\text{s}m3/sd. Conductivity — 4. National Geographic TrackingWhich of the above pairs are correctly matched?

Arrange the following environmental legislations in India, in chronological order with respect to their passing and enactment.1. The air (Prevention and control of Pollution) Act2. Forest conservation Act3. Wildlife protection Act4. The water (Prevention and control of Pollution) Act

Arrange the following environmental movements in chronological order.1. Narmada Bachao Andolan2. Silent Valley movement3. Chipko movement4. Appiko movement

Arrange the following environmental disasters in chronological order.1. Niger-Delta Oil Pollution2. India - Bhopal Cyanide Gas Leak3. Italy - Seveso Dioxin Cloud4. Romania - Cyanide Spill

What is the shape of warning sign?

What is Fire extinguisher?

What is acceptable limit of Lead in drinking water?

Which colour of AQI indicates good air condition?

When chlorine reacts with organic matters what does it form?

Consider the following pairs:a. H+=OH−\text{H}^+ = \text{OH}^-H+=OH− — 1. pH=04\text{pH} = 04pH=04b. Total solids experiment — 2. 05 Hrsc. Acidic nature — 3. 30mind. Potable water — 4. pH=07\text{pH} = 07pH=07Which of the above pairs are correctly matched?

Where Whatman's filter paper is used?

Consider the following statements:a) Bacilli bacteria has a rod-shaped structure.b) Cocci bacteria has a rod-shaped structure.c) Spirilla bacteria has a rod-shaped structure.Which of the above statements is/are correct?

Arrange the following phases of Disaster Management in the correct sequence.1. Mitigation2. Response3. Recovery4. Preparedness

What is the removal efficiency of high-rate trickling filter?

What is plankton?

Which of the following are Partners of Ramsar Convention?1. International Union for conservation of Nature2. Birdlife International3. International Water Management Institute4. Wildfowl and Wetlands TrustSelect the correct option:

In constitution of central board for prevention and control of water pollution how many persons are nominated by government, which represents the companies or corporation owned, controlled or managed by central government.

EIA of mining activities involve impact assessment on1. Geological Environment2. Biological Environment3. Aerial EnvironmentCodes:

For determining the hardness in water sample, which among the following is used as a titrant:

Coning is observed when:

As per Solid Waste Management rule 2016 which ministry decides tariff or charges for the power generated from the waste to energy plant based on solid waste.

The Global Environment Outlook report is published by:

Which state of chromium is more toxic?

Regarding the Ozone Layer, consider the following statements:1. 90% of ozone occurs naturally in the Stratosphere.2. Methyl bromide is an Ozone-Depleting Substance (ODS).Which of the statements given above is/are correct?

GRIHA is associated with which of the following?

Permissible limit of Total Suspended Solids (mg/L)(\text{mg/L})(mg/L) for disposal in surface waters from Sugar industry is:

Which method is used for the analysis of NO2\text{NO}_2NO2​ in ambient air?

Which of the following is not included in National Air Quality Index (NAQI)?

With reference to the Montreux Protocol which of the statement is correct?

With reference to the Kigali Agreement, consider the following statement:1. It was introduced as an amendment to the Montreal Protocol2. It aims for the phase-down of HFCs3. It came into force in September 2019Which of the following are correct?

Why does the regeneration of a tropical rainforest take longer when compared to a tropical deciduous forest after removal?

Which of the following is/are have been provided for in the Wildlife protection act, 1972?1. National parks2. Wildlife sanctuaries3. Biosphere reservesSelect the correct answer:

Imhoff tank is used for:

The layers formed by thermal stratification in lakes are:

Co-generation or CHP refers to:

Annual average for air pollution means total of........ measurements in a year.

Where is the headquarters of UNEP located?

What is the permissible limit of day time industrial noise as recommended by WHO?

WHO guideline values for ambient air concentration of PM2.5\text{PM}_{2.5}PM2.5​ and PM10\text{PM}_{10}PM10​ in annual average scale, in μg/m3\mu\text{g/m}^3μg/m3 are respectively:

Which amendment explicitly incorporated Article 48-A and 51-A (g) into the Constitution?

When was National Green Tribunal established in India?

Noise pollution has been inserted as pollution in the Air Act in:

Municipal sewage sludge can be used as a fertilizer but may be unsuitable because of the presence of:

Which of the following is not the component of photochemical smog?

Which of the following is NOT a waterborne disease?

Which of the following is NOT included during EIA?

According to Solid Waste Management Rules 2016, a landfill site should be how many meters away from a river?

Which one of the categories of development does not require an Environmental Impact Assessment (EIA) report?

In nitrogen cycle, elemental nitrogen returned to the atmosphere by the following process:

Which method is commonly employed by the Environmental Protection Agency (EPA) for estimating phosphorus levels in water samples?

Smog is the mixture of

The "Ozone Hole" is primarily caused by the release of which type of chemicals into the atmosphere?

The term "Biodiversity" refers to the

Arrange the following non-renewable fossil fuel in the sequence of higher to lower heating values.
1. Coal
2. Hydrogen
3. Petroleum.
4. Natural Gas

Consider the following statements:
a) Earth Day is celebrated on March-22.
b) Ammonia is the form of carbonaceous impurity.
c) Potable water is a mineral water.
d) World Water Day is celebrated on March-22.
Which of the above statements is/are correct?

Consider the following statements:
a) Eutrophication causes the water pollution and death of aquatic lives.
b) Phosphorous and Nitrogen causes the eutrophication.
c) Smog causes the eutrophication.
d) Water Hyacinth is the source of water pollution.
Which of the above statements is/are correct?

Consider the following pairs:
a. NGT — 1. Ferroin indicator
b. Blue baby disease — 2. Nitric acid
c. $\text{CO}_2$ — 3. Excessive Nitrates
d. $\text{HNO}_3$ — 4. Peroxyacetyl nitrate
Which of the above pairs are correctly matched?

A sewage of 3% diluted sample is incubated for 5 days at 20 deg.C and D.O. depletion found to be $3\text{ mg/lit}.$ Estimate BOD of sewage after 5 days.

Consider the following statements:
a) 7.0 pH value has most efficient disinfection by chlorination.
b) 7.0 pH is low alkaline.
c) 7.0 pH is high acidic.
d) 14 pH is high alkaline.
Which of the above statements is/are correct?

The concentration of $[\text{OH}^-]$ ion in a water sample is measured as $17\text{ mg/L}$ at 25 degrees Celsius. What is the pH of water sample?

Consider the following pairs:
a. Gravity filter — 1. Inorganic material
b. Grit — 2. Slow sand filter
c. Carbohydrate — 3. Pressure filter
d. Viscosity — 4. KVA
Which of the above pairs are correctly matched?

Consider the following pairs:
a. Unit of (BOD/COD) — 1. National Green Tribunal
b. NGT — 2. Unitless
c. PAN — 3. $\text{m}^3/\text{s}$
d. Conductivity — 4. National Geographic Tracking
Which of the above pairs are correctly matched?

Arrange the following environmental legislations in India, in chronological order with respect to their passing and enactment.
1. The air (Prevention and control of Pollution) Act
2. Forest conservation Act
3. Wildlife protection Act
4. The water (Prevention and control of Pollution) Act

Arrange the following environmental movements in chronological order.
1. Narmada Bachao Andolan
2. Silent Valley movement
3. Chipko movement
4. Appiko movement

Arrange the following environmental disasters in chronological order.
1. Niger-Delta Oil Pollution
2. India - Bhopal Cyanide Gas Leak
3. Italy - Seveso Dioxin Cloud
4. Romania - Cyanide Spill

Consider the following pairs:
a. $\text{H}^+ = \text{OH}^-$ — 1. $\text{pH} = 04$
b. Total solids experiment — 2. 05 Hrs
c. Acidic nature — 3. 30min
d. Potable water — 4. $\text{pH} = 07$
Which of the above pairs are correctly matched?

Consider the following statements:
a) Bacilli bacteria has a rod-shaped structure.
b) Cocci bacteria has a rod-shaped structure.
c) Spirilla bacteria has a rod-shaped structure.
Which of the above statements is/are correct?

Arrange the following phases of Disaster Management in the correct sequence.
1. Mitigation
2. Response
3. Recovery
4. Preparedness

Which of the following are Partners of Ramsar Convention?
1. International Union for conservation of Nature
2. Birdlife International
3. International Water Management Institute
4. Wildfowl and Wetlands Trust
Select the correct option:

EIA of mining activities involve impact assessment on
1. Geological Environment
2. Biological Environment
3. Aerial Environment
Codes:

Regarding the Ozone Layer, consider the following statements:
1. 90% of ozone occurs naturally in the Stratosphere.
2. Methyl bromide is an Ozone-Depleting Substance (ODS).
Which of the statements given above is/are correct?

Permissible limit of Total Suspended Solids $(\text{mg/L})$ for disposal in surface waters from Sugar industry is:

Which method is used for the analysis of $\text{NO}_2$ in ambient air?

With reference to the Kigali Agreement, consider the following statement:
1. It was introduced as an amendment to the Montreal Protocol
2. It aims for the phase-down of HFCs
3. It came into force in September 2019
Which of the following are correct?

Which of the following is/are have been provided for in the Wildlife protection act, 1972?
1. National parks
2. Wildlife sanctuaries
3. Biosphere reserves
Select the correct answer:

WHO guideline values for ambient air concentration of $\text{PM}_{2.5}$ and $\text{PM}_{10}$ in annual average scale, in $\mu\text{g/m}^3$ are respectively:

If the area of reactor is $0.25\text{ m}^2$ through which water is flowing at a velocity of $10\text{ m/s},$ what is the flowrate?

A town with a population of 60,000 has a daily sewage discharge of $1000\text{ m}^3$ . What is the per capita sewage discharge for the town?