Description : Nitrogen oxides produced from the emission of automibiles and power plants are the source of fine air borne particles which lead to:
Last Answer : Nitrogen oxides produced from the emission of automibiles and power plants are the source of fine air ... C. Wet acid deposition D. Industrial smog.
Description : Give reason: Oxides of nitrogen released during lightning is not pollutant but oxides released by industries and automobiles are pollutant.
Last Answer : Human interference causes the same substance to become a pollutant.
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 : Which is the source of chlorofluorocarbons? (A) Thermal power plants (B) Automobiles (C) Refrigeration and Air-conditioning (D) Fertilizers
Last Answer : (C) Refrigeration and Air-conditioning
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 : Fertiliser plants get their N2 requirements (A) By fractionation of liquefied air (B) By dissociating oxides of nitrogen (C) From coal gas (coke oven gas) (D) From producer gas
Last Answer : (A) By fractionation of liquefied air
Description : Catalytic converters are fitted in to automobiles for reducing emission of poisonous gases, having expensive metals namely.
Last Answer : Catalytic converters are fitted in to automobiles for reducing emission of poisonous gases, having ... Lead and Cadmium D. copper and cadmium
Description : 10. Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic converters change un burnt hydrocarbons into (a) carbon dioxide and water (b) carbon mono oxide (c) methane (d) carbon dioxide and methane.
Last Answer : (a) carbon dioxide and water
Description : Which of the following in auto-mobile exhaust can cause cancer? (1) Oxides of nitrogen (2) Carbon monoxide (3) Lead (4) Polyclinic hydrocarbons
Last Answer : (2) Carbon monoxide Explanation: Polycyclic aromatic hydrocarbons (PAHs) are formed during incomplete combustion. Domestic wood burning and road traffic are the major sources of PAHs. Exposure ... reactive diol epoxide intermediates and their subsequent covalent binding to critical targets in DNA.
Description : The constituents of automobile exhaust that can cause cancer is/are : (1) Oxides of nitrogen (2) Carbon monoxide (3) Polycyclic hydrocarbons (4) Lead
Last Answer : (2) Carbon monoxide Explanation: Lead is a naturally occuriing bluish-gray metal found in small amounts in the earth's crust. In the past, when lead was added to gasoline, breathing automobile ... found to be carcinogen. A substance that causes cancer or helps cancer grow is called a carcinogen.
Description : Which of the following in automobile exhaust can cause cancer? (1) Oxides of nitrogen (2) Carbon monoxide (3) Lead (4) Polyclinic hydrocarbons
Last Answer : Polyclinic hydrocarbons
Last Answer : Lead
Description : Out of the following which one is not a unconventional source of energy ? (A) Tidal power (B) Geothermal energy (C) Nuclear energy (D) Wind power. Ans: C 30. Pulverized coal is (A) coal free from ash (B) non-smoking coal (C) coal which bums For long time (D) coal broken into fine particles
Last Answer : Ans: D
Description : Which of the following is produced during the formation of photochemical smog? (1) Nitrogen Oxides (2) Hydrocarbons (3) Methane (4) Ozone
Last Answer : (4) Ozone Explanation: Ozone is produced during the formation of photochemical smog. Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
Description : The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent. (A) 60 (B) 30 (C) 95 (D) 100
Last Answer : (A) 60
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 : Which one of the following metals pollutes the air of a city having large number of automobiles? A. Cadmium B. Chromium C. Lead D. Copper
Last Answer : ANSWER: C
Description : Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper
Last Answer : (3) Lead Explanation: The history of car pollution has been one of air and water contamination followed by regulated improvement. Cars and trucks cause a lot of air the pollution in the world ... . But since leaded gasoline has been phased out, lead emissions have decreased by about 98 percent.
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)
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 : The most harmful air pollutant produced by automobiles is
Last Answer : The most harmful air pollutant produced by automobiles is A. `HNO_(2)` B. NO C. `SO_(2)` D. CO
Description : Which of the following is not a gaseous air pollutant? (1) Oxides of nitrogen (2) Hydrocarbon (3) Smoke (4) Oxides of sulphur
Last Answer : (2) Hydrocarbon Explanation: The gaseous air pollutants of primary concern in urban settings include sulfur dioxide, nitrogen dioxide, and carbon monoxide; these are emitted directly into the air ... is also a pollutant. Hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
Description : Tolerable limit of nitrogen oxides in air is __________ ppm. (A) 0.1 (B) 1 (C) 5 (D) 25
Last Answer : (C) 5
Description : Which of the following is the most major constituents of air pollutants? (A) Oxides of sulphur (B) Oxides of nitrogen (C) Carbon monoxide (D) Hydrogen sulphide
Last Answer : (A) Oxides of sulphur
Description : Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide
Last Answer : (D) Carbon monoxide
Description : Which of the following is an adsorbent for removal of nitrogen oxides from gas/air? (A) Active carbon (B) Silica gel (C) Bog iron (iron oxide) (D) Pulverised limestone
Last Answer : (B) Silica gel
Description : Chief air pollutant which is likely to deplete ozone layer is a) Sulphur dioxide b) Carbon dioxide c) Carbon monoxide d) Nitrogen oxides and Fluorocarbons.
Last Answer : d) Nitrogen oxides and Fluorocarbons
Description : Among the following air pollutants which directly impacts human health as well as climate ? (A) Soot (B) Sulphur dioxide (C) Oxides of nitrogen (D) Chlorofluoro carbons
Last Answer : (A) Soot
Description : Identify the air pollutant in urban areas which irritates eyes and also respiratory tract of human beings. (A) Particulate matter (B) Oxides of nitrogen (C) Surface ozone (D) Carbon monoxide
Last Answer : (C) Surface ozone
Last Answer : Hydrocarbon
Description : Highest source of air pollution in the world is – (1) Automobiles (2) Industries (3) Household wastes (4) Aircraft
Last Answer : (1) Automobiles Explanation: According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution.
Description : 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
Last Answer : (B) Automobiles exhaust
Description : Highest source of air pollution in the world is (1) Automobiles (2) Industries (3) Household wastes (4) Aircraft
Last Answer : Automobiles
Description : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a polluted area?
Last Answer : Which plant has the maximum power of absorbing `CO_(2)` and oxides of nitrogen in a ... Coleus indica C. Robinia pseudoacacia D. Daucus carota
Description : What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates
Last Answer : ANSWER: W -- ACIDIC AND BASIC OXIDES
Description : which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the ... air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.
Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.
Description : Fine organic or inorganic particles suspended in air is called --------? A. particulate pollutant B. gaseous pollutant C. aerosol (Answer) D. none of these
Last Answer : C. aerosol (Answer)
Description : Basidiospores are considered to be a major source of ------? A. airborne allergens (Answer) B. water borne allergens C. animal faeces D. bio-weapon
Last Answer : A. airborne allergens (Answer)
Description : Which term is defined as the emission of energy from subatomic particles?
Last Answer : Radiation
Description : Assertion `(A): ` The emission of `alpha-` particles results in the formation of isodiapher of parent element. Reason `(R) : ` Isodiaphers have same i
Last Answer : Assertion `(A): ` The emission of `alpha-` particles results in the formation of isodiapher of parent element ... If both (A) and (R ) are incorrect.
Description : A nuclide of an alkaine earth metal undergoes radioactive deacy by emission of the `alpha-` particles in sucession. The group of the periodic tablle t
Last Answer : A nuclide of an alkaine earth metal undergoes radioactive deacy by emission of the `alpha-` particles in ... 6th group C. 14 th group D. 16th group
Description : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus `._(15)^(30)P` with the emission of …. Is formed
Last Answer : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus ` ... A. neutrons B. protons C. positrons D. electrons
Description : Successive emission of an `alpha`-particle and two `beta`-particles by an atom of an element result in the formation of its
Last Answer : Successive emission of an `alpha`-particle and two `beta`-particles by an atom of an element result in the formation of its
Description : Emission of β-particles during radioactive decay of a substance is from (A) Innermost shell (B) Nucleus (C) Outermost shell (D) None of these
Last Answer : (B) Nucleus
Description : Which of the following statements is false? (a) Diethyl ether has been used as a general anesthetic (b) Ethyl alcohol is present in all alcoholic beverages (c) Methyl alcohol is produced by fermentation of sugars (d) Ethylene glycol is a common antifreeze for automobiles
Last Answer : Methyl alcohol is produced by fermentation of sugars
Description : Effects of nitrogen oxides on health? -Biology
Last Answer : answer:
Description : Oxides of sulphur and nitrogen are important pollutants of :
Last Answer : Oxides of sulphur and nitrogen are important pollutants of : A. Water B. air C. Soil D. All of the above
Description : Photochemical reaction of nitrogen oxides with unsaturated hydrocarbons produces
Last Answer : Photochemical reaction of nitrogen oxides with unsaturated hydrocarbons produces A. methyl isocyanate B. ... C. Benzpyrene D. peroxy-acyl nitrates.