Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the (A) Industrial chimney exhaust (B) Automobiles exhaust (C) Photochemical reaction in polluted atmosphere (D) Burning of domestic fuel

Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in
atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant
in air is the
(A) Industrial chimney exhaust
(B) Automobiles exhaust
(C) Photochemical reaction in polluted atmosphere
(D) Burning of domestic fuel
by

1 Answer

Answer :

(B) Automobiles exhaust
by

Related questions

Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results in death by asphyxiation (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles (D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere

Description : Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results ... D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere

Last Answer : (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles

Which of the following sources is responsible for maximum air pollution? (A) Industrial chimney exhaust (B) Forest fire (C) Automobiles exhaust (D) Photochemical oxidation of organic matter

Description : Which of the following sources is responsible for maximum air pollution? (A) Industrial chimney exhaust (B) Forest fire (C) Automobiles exhaust (D) Photochemical oxidation of organic matter

Last Answer : (C) Automobiles exhaust

Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO2 in air is __________ ppm. (A) 5 (B) 500 (C) 1000 (D) 2000

Description : Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO2 in air is __________ ppm. (A) 5 (B) 500 (C) 1000 (D) 2000

Last Answer : (A) 5

Threshold limit value (TLV) of CO in air is __________ ppm. (A) 5 (B) 50 (C) 2000 (D) 5000

Description : Threshold limit value (TLV) of CO in air is __________ ppm. (A) 5 (B) 50 (C) 2000 (D) 5000

Last Answer : (B) 50

Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000

Description : Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000

Last Answer : (A) < 1

Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) (A) Acts as a green house gas thereby raising earth's temperature (B) Causes asphyxia (C) Causes increase in sea level (D) Enhances the green house effect

Description : Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) (A) Acts as a green house gas thereby raising earth's ... (B) Causes asphyxia (C) Causes increase in sea level (D) Enhances the green house effect

Last Answer : (B) Causes asphyxia

Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8

Description : Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8

Last Answer : (B) 0.2

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Description : Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm). (A) Highly (B) Moderately (C) Extremely (D) Very extremely

Last Answer : (B) Moderately

Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ ppm. (A) 50 (B) 1000 (C) 5000 (D) 10000

Description : Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ ppm. (A) 50 (B) 1000 (C) 5000 (D) 10000

Last Answer : (A) 50

If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. (A) 50 (B) 500 (C) 1000 (D) 3000 (i.e. 0.3%

Description : If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. (A) 50 (B) 500 (C) 1000 (D) 3000 (i.e. 0.3%

Last Answer : (D) 3000 (i.e. 0.3%

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog? (A) Nitrogen oxides (B) Hydrocarbons (C) Both 'a' & 'b' (D) Carbon monoxide

Description : Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog? (A) Nitrogen oxides (B) Hydrocarbons (C) Both 'a' & 'b' (D) Carbon monoxide

Last Answer : (C) Both 'a' & 'b'

Pick out the wrong statement (A) Low ozone layer thickness in polar regions is due to cold climatic conditions (B) Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more as compared to that emitted by a four stroke engine (C) Carbon monoxide present in the two stroke petrol engine exhaust is much less as compared to that emitted from a four stroke engine (D) Mercury as a pollutant can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease

Description : Pick out the wrong statement (A) Low ozone layer thickness in polar regions is due to cold climatic conditions (B) Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more ... can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease

Last Answer : (D) Mercury as a pollutant can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease

Which of the following is not a major pollutant from automobiles. w) carbon monoxide x) unburned hydrocarbons y) nitrous oxide z) sulfur dioxide

Description : Which of the following is not a major pollutant from automobiles. w) carbon monoxide x) unburned hydrocarbons y) nitrous oxide z) sulfur dioxide 

Last Answer : ANSWER: Z -- SULFUR DIOXIDE

The major source of the pollutant gas, carbon mono-oxide (CO), in urban areas is (A) Thermal power sector (B) Transport sector (C) Industrial sector (D) Domestic sector

Description : The major source of the pollutant gas, carbon mono-oxide (CO), in urban areas is (A) Thermal power sector (B) Transport sector (C) Industrial sector (D) Domestic sector

Last Answer : (B) Transport sector

Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons (b) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles (c) use of non-polluting compressed natural gas (CNG) only as fuel by all buses and trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

Description : Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and ... trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

Last Answer : (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons

The main source of carbon monoxide is (1) Industrial process (2) Fuel combustion (3) Transportation (4) Solid waste disposal

Description : The main source of carbon monoxide is (1) Industrial process (2) Fuel combustion (3) Transportation (4) Solid waste disposal

Last Answer : (3) Transportation Explanation: The main source of carbon monoxide is burning of fossil fuel

The main source of carbon monoxide is (1) Industrial process (2) Fuel combustion (3) Transportation (4) Solid waste disposal

Description : The main source of carbon monoxide is (1) Industrial process (2) Fuel combustion (3) Transportation (4) Solid waste disposal 

Last Answer : Transportation

Out of the following, TLV of __________ is maximum (about 500 ppm). (A) Carbon dioxide (B) Toluene (C) Carbon disulphide (D) Acetaldehyde

Description : Out of the following, TLV of __________ is maximum (about 500 ppm). (A) Carbon dioxide (B) Toluene (C) Carbon disulphide (D) Acetaldehyde

Last Answer : (A) Carbon dioxide

Which of the following causes death by asphyxiation, if its presence inatmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?(A) Benzopyrene(B) Peroxyacetyl nitrate(C) Carbon monoxide(D) Sulphur dioxide

Description : Which of the following causes death by asphyxiation, if its presence inatmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? (A) Benzopyrene (B) Peroxyacetyl nitrate (C) Carbon monoxide (D) Sulphur dioxide

Last Answer : (C) Carbon monoxide

Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes (A) Paralysis of muscles & loss of appetite (B) Nervous depression (C) Gastritis and diarrhea (D) All (A), (B) and (C)

Description : Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes (A) Paralysis of muscles & loss of appetite (B) Nervous depression (C) Gastritis and diarrhea (D) All (A), (B) and (C)

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

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

TLV of ozone (O3 ) and phosgene (COCl2 ) in air is __________ ppm. (A) 0.1 (B) 25 (C) 100(D) 1000

Description : TLV of ozone (O3 ) and phosgene (COCl2 ) in air is __________ ppm. (A) 0.1 (B) 25 (C) 100 (D) 1000

Last Answer : (A) 0.1

TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. (A) 5 (B) 100 (C) 1000 (D) 2000

Description : TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. (A) 5 (B) 100 (C) 1000 (D) 2000

Last Answer : (A) 5

Threshold limit value of copper in the atmospheric air is - (1) 0.001 mg/m3 (2) 0.01 mg/m3 (3) 1.0 mg/m3 (4) 5.0 mg/m3

Description : Threshold limit value of copper in the atmospheric air is - (1) 0.001 mg/m3 (2) 0.01 mg/m3 (3) 1.0 mg/m3 (4) 5.0 mg/m3

Last Answer : (3) 1.0 mg/m3 Explanation: Inspirable copper dust takes a predominantly fibrous effect. The ALV of copper aerosol in the workplace atmosphere is 0.5 mg/m3, while the threshold limit value (TLV) is 1.0 mg/m3.

Overfire burning in a furnace is a phenomenon characterised by (A) Supply of excess fuel (B) Supply of excess air (C) Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air (D) None of these

Description : Overfire burning in a furnace is a phenomenon characterised by (A) Supply of excess fuel (B) Supply of excess air (C) Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air (D) None of these

Last Answer : (C) Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air

Overfire burning" in a furnace is a phenomenon characterised by the (A) Supply of excess fuel (B) Supply of excess air (C) Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air (D) None of these

Description : Overfire burning" in a furnace is a phenomenon characterised by the (A) Supply of excess fuel (B) Supply of excess air (C) Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air (D) None of these

Last Answer : (C) Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air

Sulphur dioxide present in the industrial chimney exhaust gases causes (A) Respiratory & lung disease (B) Reduction in plant's productivity owing to acid rain (C) Corrosion of building materials (D) All (A), (B) and (C)

Description : Sulphur dioxide present in the industrial chimney exhaust gases causes (A) Respiratory & lung disease (B) Reduction in plant's productivity owing to acid rain (C) Corrosion of building materials (D) All (A), (B) and (C)

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

'Flare tower' used in industry is meant for (A) Venting off (after burning) the excess inflammable/toxic gases at high pressure (B) Absorbing the pollutant gases from the furnace exhaust (C) Cooling of furnace exhaust gases (D) None of these

Description : 'Flare tower' used in industry is meant for (A) Venting off (after burning) the excess inflammable/toxic gases at high pressure (B) Absorbing the pollutant gases from the furnace exhaust (C) Cooling of furnace exhaust gases (D) None of these

Last Answer : (A) Venting off (after burning) the excess inflammable/toxic gases at high pressure

The main industrial source of emission of hydrogen sulphide air pollutant is (A) Petroleum refineries (B) Coal based thermal power plants (C) Pulp and paper plant (D) Metallurgical roasting & smelting plant

Description : The main industrial source of emission of hydrogen sulphide air pollutant is (A) Petroleum refineries (B) Coal based thermal power plants (C) Pulp and paper plant (D) Metallurgical roasting & smelting plant

Last Answer : (B) Coal based thermal power plants

A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Description : A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Last Answer : (D) 10000 to 100000

TLV of mercury in potable (drinking) water is about __________ ppm. (A) 0.001 (B) 0.1 (C) 1 (D) 5

Description : TLV of mercury in potable (drinking) water is about __________ ppm. (A) 0.001 (B) 0.1 (C) 1 (D) 5

Last Answer : (A) 0.001

TLV of lead for public sewer/waste water is about __________ ppm. (A) 1 (B) 25 (C) 150 (D) 650

Description : TLV of lead for public sewer/waste water is about __________ ppm. (A) 1 (B) 25 (C) 150 (D) 650

Last Answer : (A) 1

TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes (A) Skin disorder (B) Bronchitis (C) Bone disease (D) Cancer

Description : TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes (A) Skin disorder (B) Bronchitis (C) Bone disease (D) Cancer

Last Answer : (B) Bronchitis

Out of the following, TLV of __________ is the minimum (about 0.02 ppm). (A) Phosgene (B) Bromine (C) MIC (Methyl isocyanate) (D) Ozone

Description : Out of the following, TLV of __________ is the minimum (about 0.02 ppm). (A) Phosgene (B) Bromine (C) MIC (Methyl isocyanate) (D) Ozone

Last Answer : (C) MIC (Methyl isocyanate)

28. Which one of the following statements regarding photochemical smog is not correct? (1) Photochemical smog does not cause irritation in eyes and throat (2) Carbon monoxide does not play any role in photochemical smog formation (3) Photochemical smog is an oxidizing agent in character (4) Photochemical smog is formed through photochemical reaction involving solar energy.

Description : 28. Which one of the following statements regarding photochemical smog is not correct? (1) Photochemical smog does not cause irritation in eyes and throat (2) Carbon monoxide does not ... agent in character (4) Photochemical smog is formed through photochemical reaction involving solar energy.

Last Answer : Photochemical smog does not cause irritation in eyes and throat

How carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body tissues? (a) By forming a stable compound with haemoglobin (b) By obstructing the reaction of oxygen with haemoglobin (c) By changing oxygen into carbon dioxide (d) By destroying the haemoglobin

Description : How carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body tissues? (a) By forming a stable compound with haemoglobin (b) By obstructing the reaction of oxygen with haemoglobin (c) By changing oxygen into carbon dioxide (d) By destroying the haemoglobin

Last Answer : (a) By forming a stable compound with haemoglobin

A gaseous fuel in order to develop luminosity on burning, must contain (A) Carbon monoxide (B) Hydrocarbons (C) Hydrogen (D) Oxygen

Description : A gaseous fuel in order to develop luminosity on burning, must contain (A) Carbon monoxide (B) Hydrocarbons (C) Hydrogen (D) Oxygen

Last Answer : (B) Hydrocarbons

Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of (a) carbon disulphide (b) chloroform (c) carbon dioxide (d) carbon monoxide.

Description : Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air ... content of (a) carbon disulphide (b) chloroform (c) carbon dioxide (d) carbon monoxide.

Last Answer : (d) carbon monoxide.

Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as (A) Photochemical smog (B) Peroxyacetyl nitrate (PAN) or methyl nitrite (C) Benzopyrene (D) Polyacrylonitrile

Description : Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as (A) Photochemical smog (B) Peroxyacetyl nitrate (PAN) or methyl nitrite (C) Benzopyrene (D) Polyacrylonitrile

Last Answer : (B) Peroxyacetyl nitrate (PAN) or methyl nitrite

Photochemical smog is formed from automobile exhaust (A) By reaction of hydrocarbon & nitric oxide in presence of sunlight (B) Appears only on sunny days (C) Is harmful for crops and trees also besides causing eye irritation & asthma (D) All (A), (B) & (C)

Description : Photochemical smog is formed from automobile exhaust (A) By reaction of hydrocarbon & nitric oxide in presence of sunlight (B) Appears only on sunny days (C) Is harmful for crops and trees also besides causing eye irritation & asthma (D) All (A), (B) & (C)

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

From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Last Answer : (A) 5

Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Description : Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Last Answer : (A) Photochemical smog

Which of the following is not a secondary air pollutant? (A) Ozone (B) Photochemical smog (C) Sulphur dioxide (D) All (A), (B) & (C)

Description : Which of the following is not a secondary air pollutant? (A) Ozone (B) Photochemical smog (C) Sulphur dioxide (D) All (A), (B) & (C)

Last Answer : (C) Sulphur dioxide

Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Description : Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Last Answer : (A) Photochemical smog

Coal burning power plants and factories are responsible for about 86% of - (a) carbon monoxide in the atmosphere (b) sulphur dioxide in the atmosphere (c) chlorine in the atmosphere (d) nitrogen dioxide in the atmosphere

Description : Coal burning power plants and factories are responsible for about 86% of - (a) carbon monoxide in the atmosphere (b) sulphur dioxide in the atmosphere (c) chlorine in the atmosphere (d) nitrogen dioxide in the atmosphere

Last Answer : Ans:(b)

On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because (A) Of clotting of blood(B) Of jamming of respiratory tract(C) It forms carboxyhemoglobin by combining with haemoglobin of blood,thereby making it incapable of absorbing oxygen(D) It forms CO2 by combining with oxygen present in the blood

Description : On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because (A) Of clotting of blood (B) Of jamming of respiratory tract (C) It forms carboxyhemoglobin by combining ... it incapable of absorbing oxygen (D) It forms CO2 by combining with oxygen present in the blood

Last Answer : (C) It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen

The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Description : The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Last Answer : (1) Sulphur dioxide Explanation: Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, ... , pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.

Which of the following auto mobile gases is not considered to be an air pollutant? (1) Carbon dioxide (2) Carbon monoxide (3) Sulfur dioxide (4) Nitrogen dioxide

Description : Which of the following auto mobile gases is not considered to be an air pollutant? (1) Carbon dioxide (2) Carbon monoxide (3) Sulfur dioxide (4) Nitrogen dioxide

Last Answer : (1) Carbon dioxide Explanation: There are mainly six air pollutants: carbon monoxide lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide.

An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Description : An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Last Answer : (2) Carbon monoxide Explanation: Carbon monoxide (CO) is a colourless, odorless, non-irritating but very poisonous gas which is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide.