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
Description : Which of the following is the most severe air pollutant? (A) Hydrocarbons (B) NOx (C) SO2 (D) CO
Last Answer : (B) NOx
Description : Pollutant from motor car exhaust that causes mental disease is – (1) Lead (2) NO2 (3) SO2 (4) Hg
Last Answer : (1) Lead Explanation: Lead poisoning is a medical condition caused by increased levels of the heavy metal lead in the body. Lead interferes with a variety of body processes and is toxic to ... It interferes with the development of the nervous system, and is therefore particularly toxic to children.
Description : Pollutant from motor car exhaust that causes mental disease is (1) Lead (2) NO2 (3) SO2 (4) Hg
Last Answer : Lead
Description : In a coal fired power plant electrostatic precipitators are installed to control emission of (a) NOX (b) SPM (c) CO (d) SO2
Last Answer : (b) SPM
Description : Major gaseous pollutant of the thermal power station is – (1) H2S (2) NH3 (3) NO2 (4) SO2
Last Answer : (4) SO2 Explanation: A flue-gas stack is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air ... CO2) and water vapor as well as nitrogen and excess oxygen remaining from the intake combustion air.
Description : Major gaseous pollutant of the thermal power station is (1) H2 S (2) NH3 (3) NO2 (4) SO2
Last Answer : SO2
Description : Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion ... rate? (A) CO (B) SO2 (C) NOx (D) CFC (chloro fluoro carbons)
Last Answer : (A) CO
Description : Smog is not formed due to the presence of __________ in the atmosphere. (A) SO2 (B) NOx (C) CO2 (D) Any of these
Last Answer : (C) CO2
Description : (3) Oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of oxides of Sulfur and Nitrogen (Sulfur Dioxide and Nitrogen Oxide), which react with the water molecules in the ... The emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) result from fossil fuel combustion.
Last Answer : (3) live wire and the neutral wire Explanation: Three wires enter most homes from the power pole-two "hot" wires and a third "neutral" wire. Each hot wire provides 120- volt current for ... the main switch is put off because the electric circuit (the path where the electricity travels) gets opened.
Description : What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) (3) Carbon dioxide (CO2) and Carbon monoxide (CO) (4) Oxides of carbon (COx) and Oxides of nitrogen (NOx)
Last Answer : (2) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Explanation: Acid rain is caused by emissions of sulfur dioxide (SO2) and nitrogen oxide (NO), which react with the water molecules in the ... in acid rain can cause paint to peel, corrosion of steel structures and weathering of stone buildings.
Description : Because less coal is consumed in this system, emissions of ______ and particulate and solid waste by products are reduced. a. Sulphur dioxide (SO2) b. Nitrogen oxide (NOx) c. Carbon dioxide (CO2) d. All of the above.
Last Answer : d. All of the above.
Description : The main precursors of winter smog are (A) N2O and hydrocarbons (B) NOx and hydrocarbons (C) SO2 and hydrocarbons (D) SO2 and ozone
Last Answer : (C) SO2 and hydrocarbons
Description : What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) (3) Carbon dioxide (CO2 ) and Carbon monoxide (CO) (4) Oxides of carbon (COx ) and Oxides of nitrogen (NOx )
Last Answer : Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx )
Description : Which of the following plants does not emit appreciable amount of SO2 in atmosphere? (A) Thermal power plant (B) Petroleum refinery (C) Nitric acid plant (D) Sulphuric acid plant
Last Answer : (C) Nitric acid plant
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
Description : __________ plant emits large amount of SO2 as an air pollutant. (A) Nitric acid (B) Sulphuric acid (C) Chlor alkali (D) Iron & steel
Last Answer : (B) Sulphuric acid
Description : Which of the following pollutants is not emitted during volcanic eruptions? (A) SO2 (B) H2S (C) CO (D) Hydrocarbons
Last Answer : (D) Hydrocarbons
Description : Pick out the correct statement. (A) Deforestation helps in controlling the green house effect (B) Global warming is detrimental for increase in food productivity and may cause flood and cyclone ( ... natural source of production of SO2 & H2S pollutant (D) Sulphur dioxide causes death by asphyxiation
Last Answer : (B) Global warming is detrimental for increase in food productivity and may cause flood and cyclone
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
Description : The pollutant responsible for ozone holes is - (1) CO2 (2) SO2 (3) CO (4) CFC
Last Answer : (4) CFC Explanation: Chlorofluorocarbons (CFCs) have been held responsible for the depletion of ozone layer. The manufacture of CFCs has been phased out under the Montreal Protocol, and they are being replaced with other products such as HFCs.
Description : The most dangerous pollutant in vehicular emissions is A. CO B. SO2 C. CO2 D. O3
Last Answer : ANS: A
Description : Which of the following is a secondary pollutant? (a) CO (b) CO2 (c) SO2 (d) O3
Last Answer : (d) O3
Description : Which one of the following is a most harmful pollutant by automobiles? (a) SO2 (b) CO (c) N2O (d) CO2
Last Answer : (b) CO
Description : Which of the following is a secondary pollutant (1) CO (2) CO2 (3) SO2 (4) O3
Last Answer : (4) O3
Description : Which Pollutant causes leaf curling a) CO b) H2S c) O3 d) SO2
Last Answer : d) SO2
Description : Which one of the following is normally not an atmospheric pollutant ? a) CO b) CO2 c) SO2 d) Hydrocarbon.
Last Answer : b) CO2
Description : Major aerosol pollutant in Jet Plane emission is a) SO2 b) CO c) CH4 d) CFC.
Last Answer : d) CFC.
Description : The pollutant responsible for ozone holes is _____. (1) CO2 (2) SO2 (3) CO (4) CFC
Last Answer : CFC
Description : How do smelters use mercury?
Last Answer : answer:You mean for gold? https://en.wikipedia.org/wiki/Gold_extraction It's an ancient thing, I don't think they do it anymore, but some metals are found in the ground in an amalgam with ... thought. They mined for gold in New Zealand it was very controversial because of the poisons it introduced.
Description : Polonium -210 is pollutant emitted from
Last Answer : Polonium -210 is pollutant emitted from A. Laboratory radio-isotopes B. Coolant water of reactors C. Automobile exhausts D. Thorium rich sands.
Description : The dominant source of pollution due to oxides of nitrogen (NOx) in urban areas is (A) Road trAns:port (B) Commercial Sector (C) Energy use in industry (D) Power plants
Last Answer : (B) Commercial 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
Description : The thermal radiation emitted by a body is proportional to T n , where T is its absolute temperature. The value of 'n' is exactly 4 for (A) Black painted bodies only (B) All bodies (C) Polished bodies only (D) A black body
Last Answer : (B) All bodies
Description : Which of the following is a source of methane? (A) Wetlands (B) Foam Industry (C) Thermal Power Plants (D) Cement Industry
Last Answer : Answer: A
Description : Which of the following is not a weightless pollutant? (A) SPM (B) Thermal pollution (D) Noise pollution (C) Radioactive rays
Last Answer : (A) SPM
Description : Bacillus thuringiensis (Bt) strains have been used for designing novel (a) biofertilizers (b) bio-metallurgical techniques (c) bio-mineralization processes (d) bioinsecticidal plants.
Last Answer : (d) bioinsecticidal plants.
Description : Which of the following fuels is generally not used in thermal power plant boiler firing? (A) Furnace oil, light diesel oil and tar/PCM (B) Pulverised coking coal (C) Coal middling from washeries (D) B.F. gas, coke oven gas and L.D. converter gas
Last Answer : (B) Pulverised coking coal
Description : Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body. (A) Grey (B) Black (C) Opaque
Last Answer : (A) Grey
Description : The radiation emitted by a body as a result of its temperature. a. Blackbody Radiation b. Thermal Inversion c. Thermionic Inversion d. Thermal Radiation
Last Answer : Thermal Radiation
Description : The thermal radiation emitted by a blackbody heated to a given temperature. a. Gamma Radiation b. Black Body Radiation c. Electromagnetic Radiation d. Alpha Radiation
Last Answer : Black Body Radiation
Description : Advantages of fluidised bed combustion are (A) Reduced NOx formation in flue gas (B) Lower furnace operating temperature (C) High heat transfer rate (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for (A) Conversion of CO into CO2 in the second compartment (B) Conversion of NOx into N2 and NH3 in the first ... of unburnt hydrocarbon fuel in the second compartment (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Description : Nitrogen oxides (NOx ) is not produced in the __________ industry. (A) Nitric acid making (B) Nitrogenous fertiliser (C) Detergent (D) Any of these
Last Answer : (C) Detergent
Description : Peroxyacetyl nitrate (PAN), a pollutant is found in the (A) Automobile exhaust (B) Flue gas of coal based power plant (C) Exhaust of nitric acid plant (D) Exhaust of sulphuric acid plant
Last Answer : (A) Automobile exhaust
Description : LSHS is a type of furnace oil, which (A) Is more viscous than high viscosity furnace oil (HVFO) (B) Stands for low sulphur heavy stock (C) Is an ideal fuel for metallurgical furnaces due to its lower sulphur content (< 1%) (D) All (A), (B) and (C)
Description : Electronic structure of a material is generally studied by (A) Metallurgical microscope (B) Electron diffraction (C) Spectroscopic techniques (D) X-ray
Last Answer : (C) Spectroscopic techniques
Description : __________ is used for examining the macro-structure of a material. (A) Metallurgical microscope (B) Optical microscope (C) X-rays (D) Visual inspection by naked eye
Last Answer : (D) Visual inspection by naked eye
Description : Higher percentage of ash in coal meant for the production of metallurgical grade coke (A) Decreases the hardness of coke (B) Decreases the abrasion resistance of coke (C) Causes brittleness in steel (D) None of these
Last Answer : (D) None of these