The biological decomposition of organic substances in wastes under controlled conditions known as (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis

The biological decomposition of organic substances in wastes under controlled conditions known as (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis
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The biological decomposition of organic substances in wastes under controlled conditions known as - (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis

Description : The biological decomposition of organic substances in wastes under controlled conditions known as - (1) composting (2) incineration (3) sanitary landfill (4) pyrolysis

Last Answer : (1) composting

The biological decomposition of organic substances in wastes controlled conditions is called (A) Incineration (B) Biological oxidation(C) Composting(D) None of these

Description : The biological decomposition of organic substances in wastes controlled conditions is called (A) Incineration (B) Biological oxidation (C) Composting (D) None of these

Last Answer : (C) Composting

Dumping of solid waste in lowlying areas earth cover is called as : (1) Sanitary land filing (2) Open dumping (3) Composting (4) Incineration

Description : Dumping of solid waste in lowlying areas earth cover is called as : (1) Sanitary land filing (2) Open dumping (3) Composting (4) Incineration

Last Answer : (1) Sanitary land filing Explanation: Sanitary landfills are low lying sites where waste is isolated from the environment until it is safe. It is considered when it has completely degraded ... chemically and physically. In high-income countries, the level of isolation achieved may be high.

Dumping of solid waste in lowlying areas earth cover is called as : (1) Sanitary landfilling (2) Open dumping (3) Composting (4) Incineration

Description : Dumping of solid waste in lowlying areas earth cover is called as : (1) Sanitary landfilling (2) Open dumping (3) Composting (4) Incineration

Last Answer : Sanitary landfilling

Radioactive solid nuclear wastes are disposed off by (A) High temperature incineration (B) Pathological incineration (C) Pyrolysis(D) Underground burial in concrete containers

Description : Radioactive solid nuclear wastes are disposed off by (A) High temperature incineration (B) Pathological incineration (C) Pyrolysis (D) Underground burial in concrete containers

Last Answer : (D) Underground burial in concrete containers

Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Description : Bacterial decomposition of biological material under anaerobic condition is – (1) fermentation (2) fertilization (3) contamination (4) composting

Last Answer : (1) fermentation Explanation: Fermentation is the process by which complex organic compounds, such as glucose, are broken down by the action of enzymes into simpler com-pounds in the absence ... carbon dioxide by fermentation. Fermentation is used to produce wine, beer, yogurt and other products.

Bacterial decomposition of biological material under anaerobic condition is (1) fermentation (2) fertilization (3) contamination (4) composting

Description : Bacterial decomposition of biological material under anaerobic condition is (1) fermentation (2) fertilization (3) contamination (4) composting

Last Answer : fermentation

Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy. (2) The process occurs at a temperature above 430°C at atmospheric pressure. (3) The process occurs under high pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste

Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid ... pressure at temperature above 430° C. (4) It is a thermo chemical decomposition of organic waste

Last Answer : (2) The process occurs at a temperature above 430°C at atmospheric pressure. Explanation: Pyrolysis is a thermo-chemical decomposition of organic material at elevated temperatures in the ... . Pyrolysis generally takes place well above atmospheric pressure at temperatures exceeding above 430 °C.

Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy. (2) The process occurs at a temperature above 430°C at atmospheric pressure. (3) The process occurs under high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Description : Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect? (1) It converts the waste into solid, liquid and gas of which the resultant ... high pressure at temperature above 430° C. (4) It is a thermochemical decomposition of organic waste

Last Answer : The process occurs at a temperature above 430°C at atmospheric pressure.

Pick up the correct statement from the following: A. Indore method of composting involves decomposition under aerobic conditions B. Bangalore method of composting involves decomposing under anaerobic conditions C. Fully stabilised refuse by the Bangalore method of compositing is a powdery mass called humus D. all of these

Description : Pick up the correct statement from the following: A. Indore method of composting involves decomposition under aerobic conditions B. Bangalore method of composting involves decomposing under anaerobic conditions C ... the Bangalore method of compositing is a powdery mass called humus D. all of these

Last Answer : ANS: D

Wich of the following is a method/process of disposing of solid waste which cannot be re-used or recycled? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) An the above

Description : Wich of the following is a method/process of disposing of solid waste which cannot be re-used or recycled? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) An the above

Last Answer : (4) An the above Explanation: Landfills, Incineration, Pyrolysis and Gasification are methods of disposing of solid waste which cannot be reused or recycled.

Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) All the above

Description : Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ? (1) Landfills (2) Incineration (3) Pyrolysis and Gasification (4) All the above

Last Answer : All the above

Explain briefly the meaning of the following terms: (i) Composting. (ii) Incineration. (iii) Segregation. -Geography

Description : Explain briefly the meaning of the following terms: (i) Composting. (ii) Incineration. (iii) Segregation. -Geography

Last Answer : (i) Composting: It is a process that involves decomposition of organic waste into humus known as compost which is a good fertilizer for the plants. (ii) Incineration: It is a ... at source into different categories of biodegradable and non-degradable waste, this process is called Segregation.

The least preferred technique in the disposal of Municipal Solid Waste is - (1) Incineration (2) Composting (3) Land filling (4) Bricketting

Description : The least preferred technique in the disposal of Municipal Solid Waste is - (1) Incineration (2) Composting (3) Land filling (4) Bricketting

Last Answer : (4) Bricketting Explanation: Some of the methods of solid waste disposal and management are : Open burning Dumping into the sea Sanitary Landfills Incineration Composting Ploughing in fields Hog feeding ... waste into fuel pellets or briquettes is the least preferred method of solid waste disposal.

The least preferred technique in the disposal of Municipal Solid Waste is (1) Incineration (2) Composting (3) Land filling (4) Bricketting

Description : The least preferred technique in the disposal of Municipal Solid Waste is (1) Incineration (2) Composting (3) Land filling (4) Bricketting

Last Answer : Bricketting

The biological process in which both aerobes and anaerobes degrade organic matter is - (1) Manuring (2) Composting (3) Digesting (4) Nitrifying

Description : The biological process in which both aerobes and anaerobes degrade organic matter is - (1) Manuring (2) Composting (3) Digesting (4) Nitrifying

Last Answer : (2) Composting Explanation: Composting is the depomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.

The biological process in which both aerobes and anaerobes degrade organic matter is (1) Manuring (2) Composting (3) Digesting (4) Nitrifying

Description : The biological process in which both aerobes and anaerobes degrade organic matter is (1) Manuring (2) Composting (3) Digesting (4) Nitrifying

Last Answer : Composting

Biological Oxygen Demand (BOD) is a measure of: a. Industrial wastes poured into water bodies b. Extent to which water is polluted with organic compounds c. Amount of carbon monoxide inseparably combined with haemoglobin d. Amount of oxygen needed by green plants during night

Description : Biological Oxygen Demand (BOD) is a measure of: a. Industrial wastes poured into water bodies b. Extent to which water is polluted with organic compounds c. Amount of carbon monoxide inseparably combined with haemoglobin d. Amount of oxygen needed by green plants during night

Last Answer : Ans: A

Pick out the wrong statement.(A) Biological oxygen demand (BOD) is a characteristic and not a constituent of water (B) BOD is a measure of the amount of oxygen which will be demanded & used in 5 days by the biological decomposition of the organic matter present in water stream present as food for the living organism (C) BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water) (D) None of these

Description : Pick out the wrong statement. (A) Biological oxygen demand (BOD) is a characteristic and not a constituent of water (B) BOD is a measure of the amount of oxygen which will be demanded & used in 5 days ... BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water) (D) None of these

Last Answer : (D) None of these

Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. Pyrolysis -Solid soil wast

Description : Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. Pyrolysis -Solid soil wast

Last Answer : Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. ... C. 2,3,4,5 D. 1,2,3,4

Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried out in sludge tank C. The gases produced in sludge digestion process, contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane

Description : Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried ... contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane

Last Answer : ANS: C

The controlled aerobic combustion of wastes inside chambers at temperature of 900-1300°C is known as

Description : The controlled aerobic combustion of wastes inside chambers at temperature of 900-1300°C is known as

Last Answer : The controlled aerobic combustion of wastes inside chambers at temperature of 900-1300°C is known as ... B. Recycling C. Pyrolysis D. Sanitary dumping

The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known A. Bio-Chemical Oxygen Demand (B.O.D.) B. Dissolved Oxygen (D.O.) C. Chemical Oxygen Demand (C.O.D.) D. None of these

Description : The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known A. Bio-Chemical Oxygen Demand (B.O.D.) B. Dissolved Oxygen (D.O.) C. Chemical Oxygen Demand (C.O.D.) D. None of these

Last Answer : ANS: B

In India it is found recently that incidence of Malaria is increasing because (a) The mosquitoes have become DDT resistant (b) Of poverty in villages (c) Of poor sanitary conditions (d) On account of increase in population it has become impossible to maintain cleanliness everywhere

Description : In India it is found recently that incidence of Malaria is increasing because (a) The mosquitoes have become DDT resistant (b) Of poverty in villages (c) Of poor sanitary conditions (d) On account of increase in population it has become impossible to maintain cleanliness everywhere

Last Answer : Ans:(a)

Organic farming, composting and lifetime value?

Description : Organic farming, composting and lifetime value?

Last Answer : Is well-meaning spam still spam?

Mushroom cultivation is not useful in (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Description : Mushroom cultivation is not useful in (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Last Answer : (2) Biological control of crop diseases Explanation: Mushroom cultivation has been found to coincide with decrease of incidents of breast cancer. Spent residues after cultivation could ... production; and agricultural waste recycling can be achieved through controlled cultivation of mushrooms.

Mushroom cultivation is not useful in – (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Description : Mushroom cultivation is not useful in – (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Last Answer : (2) Biological control of crop diseases

Lagooning process is mainly a means of the (A) Sludge disposal (B) Reduction of excessive flow in sewers (C) Biological treatment of wastes (D) None of these

Description : Lagooning process is mainly a means of the (A) Sludge disposal (B) Reduction of excessive flow in sewers (C) Biological treatment of wastes (D) None of these

Last Answer : (A) Sludge disposal

What are the methods of treatment & disposal of radioactive wastes? (A) Evaporation & chemical precipitation (B) Biological methods & adsorption in ion exchange materials (C) Fixing into a solid mass with cement and sinking deep in the sea (D) All (A), (B) & (C)

Description : What are the methods of treatment & disposal of radioactive wastes? (A) Evaporation & chemical precipitation (B) Biological methods & adsorption in ion exchange materials (C) Fixing into a solid mass with cement and sinking deep in the sea (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Mushroom cultivation is not useful in (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Description : Mushroom cultivation is not useful in (1) Biogas production (2) Biological control of crop diseases (3) Recycling of agricultural wastes (4) Preventing cancer

Last Answer : Biological control of crop diseases

Biodegradable wastes can usually be converted into useful substances with the help of - (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Description : Biodegradable wastes can usually be converted into useful substances with the help of - (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Last Answer : (1) Bacteria Explanation: Biodegradable waste includes any organic matter in waste which can be broken down into carbon dioxide, water, methane or simple organic molecules by micro-organisms such as ... or a resource for heat, electricity and fuel by means of incineration or anaerobic digestion.

Biodegradable wastes can usually be converted into useful substances with the help of - (1) bacteria (2) nuclear proteins (3) radioactive substances (4) viruses

Description : Biodegradable wastes can usually be converted into useful substances with the help of - (1) bacteria (2) nuclear proteins (3) radioactive substances (4) viruses

Last Answer : (1) bacteria Explanation: Biodegradable waste is a type of waste, typically originating from plant or animal sources, which may be degraded by other living organisms.

Biogradable wastes can usually be converted into useful substances with the help of: (1) nuclear proteins (2) radio-active substances (3) viruses (4) bacteria

Description : Biogradable wastes can usually be converted into useful substances with the help of: (1) nuclear proteins (2) radio-active substances (3) viruses (4) bacteria

Last Answer : (4) bacteria Explanation: Bacteria can convert biodegradable wastes into useful substances.

Biodegradable wastes can usually be converted into useful substances with the help of - (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Description : Biodegradable wastes can usually be converted into useful substances with the help of - (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Last Answer : (1) Bacteria Explanation: Bacteria are the most abundant organisms which play important role in the decomposition of organic matter. Majority of bacteria involved in decomposition of organic ... and autotrophs are least in proportion which are not directly involved in organic matter decomposition.

Biodegradable wastes can usually be converted into useful substances with the help of (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Description : Biodegradable wastes can usually be converted into useful substances with the help of (1) Bacteria (2) Nuclear proteins (3) Radioactive substances (4) Viruses

Last Answer : Bacteria

How can drinking from water that comes from the earth under a landfill affect a person's health?

Description : How can drinking from water that comes from the earth under a landfill affect a person's health?

Last Answer : What is the answer ?

Under foreign post article containing perishable biological substances can be accepted for sending a) At all Gazetted Head post offices onlyb) At all the GPOs situated at the HQ of the circlec) At Indian council of Medical research, New Delhid) All the above

Description : Under foreign post article containing perishable biological substances can be accepted for sending a) At all Gazetted Head post offices only b) At all the GPOs situated at the HQ of the circle c) At Indian council of Medical research, New Delhi d) All the above

Last Answer : c) At Indian council of Medical research, New Delhi

Coating of solid waste with impervious material is known as – (1) Encapsulation (2) Chemical fixation (3) Landfill (4) Capping

Description : Coating of solid waste with impervious material is known as – (1) Encapsulation (2) Chemical fixation (3) Landfill (4) Capping

Last Answer : (1) Encapsulation Explanation: Containment of toxic or hazardous constituents in industrial solid wastes is currently being accomplished using: (i) coating grains of waste material with an ... coating blocks of waste material with an inert, non-reactive impervious material (macroencapsulation).

Coating of solid waste with impervious material is known as (1) Encapsulation (2) Chemical fixation (3) Landfill (4) Capping

Description : Coating of solid waste with impervious material is known as (1) Encapsulation (2) Chemical fixation (3) Landfill (4) Capping

Last Answer : Encapsulation

What do you understand by the term Dark Fermentation'? (1) It is a method to dispose nu-clear wastes. (2) It is a method to produce methane from organic wastes. (3) It is a method to reduce COD in the atmosphere. (4) It is a method to produce Hydrogen as a fuel from waste water.

Description : What do you understand by the term Dark Fermentation'? (1) It is a method to dispose nu-clear wastes. (2) It is a method to produce methane from organic wastes. (3) It is a method to reduce COD in the atmosphere. (4) It is a method to produce Hydrogen as a fuel from waste water.

Last Answer : (4) It is a method to produce Hydrogen as a fuel from waste water. Explanation: Dark fermentation is the fermentative conversion of organic substrate to bio-hydrogen. It is a complex ... . Wastewater is used as a potential substrate for bio-hydrogen production in the dark fermentation process.

In the context of the chemical process industries, the term BOD is normally associated with the (A) Characterisation of solid wastes (B) Organic concentration in gaseous effluents (C) Characterisation of liquid effluents (D) Characterisation of boiler feed water

Description : In the context of the chemical process industries, the term BOD is normally associated with the (A) Characterisation of solid wastes (B) Organic concentration in gaseous effluents (C) Characterisation of liquid effluents (D) Characterisation of boiler feed water

Last Answer : (C) Characterisation of liquid effluents

Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate in cone, sulphuric acid solution at boiling temperature for specified time (C) COD is related to BOD of a given waste in water but the relationship varies for different wastes. Typically COD of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Description : Pick out the correct statement. (A) Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water (B) COD is determined by oxidising the organic matter present in water with potassium dichromate ... of potable water may be 1-2 mg/litre (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

What do you understand by the term ‘Dark Fermentation’? (1) It is a method to dispose nuclear wastes. (2) It is a method to produce methane from organic wastes. (3) It is a method to reduce COD in the atmosphere. (4) It is a method to produce Hydrogen as a fuel from waste water.

Description : What do you understand by the term ‘Dark Fermentation’? (1) It is a method to dispose nuclear wastes. (2) It is a method to produce methane from organic wastes. (3) It is a method to reduce COD in the atmosphere. (4) It is a method to produce Hydrogen as a fuel from waste water.

Last Answer :  It is a method to produce Hydrogen as a fuel from waste water.

The sewage obtained from water closets and urinals is known as – (1) Sanitary waste (2) Industrial waste (3) Garbage (4) Sullage

Description : The sewage obtained from water closets and urinals is known as – (1) Sanitary waste (2) Industrial waste (3) Garbage (4) Sullage

Last Answer : (1) Sanitary waste Explanation: The sewage obtained from water closets and urinals in known as Sanitary waste.

WASTE WATER ENGINEERING Objective Questions with Answers Q No: 161 The quantity of liquid waste which flows in sewers during the period of rainfall, is known A. Sanitary sewage B. Industrial waste C. Storm sewage D. None of these

Description : WASTE WATER ENGINEERING Objective Questions with Answers Q No: 161 The quantity of liquid waste which flows in sewers during the period of rainfall, is known A. Sanitary sewage B. Industrial waste C. Storm sewage D. None of these

Last Answer : ANS: C

The sewage obtained from water closets and urinals is known as (1) Sanitary waste (2) Industrial waste (3) Garbage (4) Sullage

Description : The sewage obtained from water closets and urinals is known as (1) Sanitary waste (2) Industrial waste (3) Garbage (4) Sullage

Last Answer : Sanitary waste

The process of decomposition of organic matter is termed as

Description : The process of decomposition of organic matter is termed as

Last Answer : Ans. Humification

Decomposition of organic matter is due to (a) Virus (b) Fungi (c) Bacteria (d) None of these

Description : Decomposition of organic matter is due to (a) Virus (b) Fungi (c) Bacteria (d) None of these

Last Answer : Ans:(c)

Fermentation is a process of decomposition of an organic compound by (1) catalysts (2) enzymes (3) carbanions (4) free radicals

Description : Fermentation is a process of decomposition of an organic compound by (1) catalysts (2) enzymes (3) carbanions (4) free radicals

Last Answer : (2) enzymes Explanation: Fermentation in food processing typically is the conversion of carbohydrates to alcohols and carbon dioxide or organic acids using yeasts, bacteria, or a combination there ... to lactic acid. Alcoholic fermentation follows the same enzymatic pathway for the first 10 steps.

In septic tanks, decomposition of organic bacteria, is done by A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these

Description : In septic tanks, decomposition of organic bacteria, is done by A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these

Last Answer : ANS: A