Description : Most hazardous metal pollutant of automobile exhausts is :
Last Answer : Most hazardous metal pollutant of automobile exhausts is : A. mercury B. Lead C. Cadmium D. copper.
Last Answer : Most hazardous metal pollutant of automobile exhausts is : A. mercury B. cadmium C. lead D. copper.
Description : Two components of automobile exhausts, which can interact to produce secondary pollutants are
Last Answer : Two components of automobile exhausts, which can interact to produce secondary pollutants are A. ... sulphur dioxide D. Sulphur and nitrogen oxides.
Description : Most hazardous metal pollutant of automobile exhausts is (a) mercury (b) cadmium (c) lead (d) copper.
Last Answer : (c) lead
Description : Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes (A) Blood poisoning (B) Anaemia (C) Nervous system disorder (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (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)
Description : A simple steam engine receives steam from the boiler at 180˚C and exhausts directly into the air at 100˚C. What is the upper limit of its efficiency? a. 11.28 % b. 36.77 % c. 20.36 % d. 17.66 %
Last Answer : 17.66 %
Description : Smog that occurs due to low temperature and has reducing environment is
Last Answer : Smog that occurs due to low temperature and has reducing environment is A. photochemical smog B. los ... smog C. nonsulphurous smog D. london smog.
Description : The progressive warming up of the earth's surface is mainly due to the (A) Automobile exhau (B) Blanketing effect of CO2 in the atmosphere (C) De-forestation (D) Thickening of ozone layer
Last Answer : (B) Blanketing effect of CO2 in the atmosphere
Description : Photochemical smog formed in congested metropolitan cities mainly consists of :
Last Answer : Photochemical smog formed in congested metropolitan cities mainly consists of : A. Ozone, peroxyacyl nitrate ... D. Hydrocarbons, ozone and `SO_(x)`
Description : The smog in cities in India mainly consists of (A) Oxides Of sulphur (B) Oxides of nitrogen and unburnt hydrocarbons (C) Carbon monoxide and SPM (D) Oxides of sulphur and ozone
Last Answer : (B) Oxides of nitrogen and unburnt hydrocarbons
Description : Certain substances are classified as water pollutants, others as air pollutants and still others as land pollutants. Which of the following pollutes all three parts of our environment? w) fluorocarbons x) smog y) acid rain z) ozone
Last Answer : ANSWER: Y -- ACID RAIN
Description : Where to buy?
Last Answer : I take from here http://obchod.prodejvyfuku.cz/default.php
Description : The waste gases coming out from gas turbine exhausts are of the order of: a) 370-540 b) 450 – 700 c) 700- 800 d) 250-440
Last Answer : 370-540
Description : Photochemical smog occurs in which climage? -General Knowledge
Last Answer : The answer is 'Auxin'
Last Answer : answer:
Description : Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of (A) Cold SBR (B) Butyl rubber (C) Bunai N (D) Buna S
Last Answer : (B) Butyl rubber
Description : What energy transformation occurs when gasoline burns in an automobile?
Last Answer : fire energy
Description : Smog is produced due to
Last Answer : Smog is produced due to A. Air and metal dust B. Water and nitrogen oxide C. Smoke and fog D. None of the above
Description : The yellow colour in photochemical smog is due to the presence of------? A. Sulphur dioxide B. Carbon dioxide C. Nitrogen dioxide (Answer) D. CFC’s
Last Answer : C. Nitrogen dioxide (Answer)
Description : Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby ... B) Irritation in eyes (C) Respiratory trouble (D) All (A), (B) and (C)
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 : Smog is a combination of – (1) air and water vapour (2) water and smoke (3) fire and water (4) smoke and fog
Last Answer : (4) smoke and fog Explanation: The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of groundlevel ozone.
Description : The term 'brown air' is used for – (1) Acid fumes (2) Photochemical smog (3) Sulphurous smog (4) Industrial smog
Last Answer : (2) Photochemical smog Explanation: Photochemical smog which is mainly composed of ozone (O3), Peroxyacetyl nitrate (PAN) and No., is also known as brown air where solar radiation is intense. In ... solar radiation or areas, smog formation is incomplete and the air is referred to as grey air.
Description : Smog is a combination of – (1) Air and water vapours (2) Water and smoke (3) Fire and water (4) Smoke and fog
Last Answer : (4) Smoke and fog Explanation: Smog is a type of air pollution; the word "smog" was coined in the early 20th century as a portmanteau of the words smoke and fog to refer to smoky ... amounts of coal within a city; this smog contains soot particulates from smoke, sulfur dioxide and other components.
Description : Which is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles
Last Answer : (A) Photochemical smog
Description : Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a ‘particulate’? (A) Dust & mists (B) Smoke & fumes (C) Photochemical smog & soot (D) None of these
Last Answer : (D) None of these
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
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 : Presence of high concentration of ozone and smog in atmospheric air causes the (A) Embrittlement & decrease of folding resistance of paper (B) Cracking of rubber products (C) Fading of dye on textiles (D) Damage of electrical insulator on high tension power line
Last Answer : (B) Cracking of rubber products
Description : Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles
Description : The term ‘brown air’ is used for (1) Acid fumes (2) Photochemical smog (3) Sulphurous smog (4) Industrial smog
Last Answer : Photochemical smog
Description : Smog is a combination of (1) air and water vapour (2) water and smoke (3) fire and water (4) smoke and fog
Last Answer : smoke and fog
Description : Under which circumstances will have zero velocity and be still accelerating? a.The bob of a simple pendulum when at its mean position b.107 dynes c.A steamer while taking a turn d.A ball at its highest point of its rise when thrown up e.Tyres of a stationary automobile
Last Answer : d. A ball at its highest point of its rise when thrown up
Description : Northern automobile driving jellies, what precautions are you taking with west bound traffic and are you cutting them some slack due to the glare in the afternoon?
Last Answer : I try to be hyper aware, and I always assume they can’t see me. Like you, I stay waaaaay to the right, and sometimes I find alternate routes when I know (from experience) that visibility is zero on some roads.
Description : The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere
Last Answer : A. The scattering of sunlight by air molecules (Answer)
Description : Fruit splitting in pomegranate and litchi is due mainly to: a. Water pressure b. Dry ness of air c. Nutritional defects d. All of above
Last Answer : All of above
Description : Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan (A) With greater ... (B) Of increased diameter (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : The major harmful gas emitted by automobile vehicle which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : (1) Carbon Monoxide Explanation: Carbon monoxide is the major harmful gas emitted by the automobile vehicles which causes air pollution. Carbon monoxide (CO) - A product of incomplete combustion, ... overexposure (carbon monoxide poisoning) may be fatal. Carbon Monoxide poisoning is a major killer.
Description : The major harmful gas emitted by automobile vehicles which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Description : Which of the following is a manmade source of air pollution? (A) Automobile exhaust (B) Forest fire (C) Bacterial action in soil and swamp areas (D) All (A), (B) and (C)
Last Answer : (A) Automobile exhaust
Description : Which is an example of closed system? (A) Air compressor (B) Liquid cooling system of an automobile (C) Boiler (D) None of these
Last Answer : (B) Liquid cooling system of an automobile
Description : An automobile tire has a gauge pressure of 200 kpa at 0°C assuming no air leaks and no change of volume of the tire, what is the gauge pressure at 35ºC. a. 298.645 b. 398.109 c. 291.167 d. 281.333 Pg = Pabs - Patm
Last Answer : 298.645
Description : Describe with neat sketch working of air compressor used in automobile workshops. State its two advantages
Last Answer : As shown in ig. Shows two stages reciprocating air compressor with water cooled and intercooler First of all fresh air is sucked from atmosphere in low pressure (L.P) cylinder during its suction ... : 1) Less power is required to drive the compressor. 2) Higher volumetric efficiency
Description : Write any four application of compressed air in automobile industry.
Last Answer : 1.Operating tools in factories 2. Operating drills and hammers in road building 3. Starting diesel engines 4. Operating brakes on buses, trucks and trains 5. Spray painting 6. Excavating 7. To clean the large workshops
Description : The major harmful gas emitted by automobile vehicles which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : Carbon Monoxide
Description : The major harmful gas emitted by automobile vehicle which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : Carbon dioxide
Description : The biosynthesis of urea occurs mainly in the liver: (A) Cytosol (B) Mitochondria (C) Microsomes (D) Nuclei
Last Answer : Answer : B
Description : Esterification of cholesterol occurs mainly in (A) Adipose tissue (B) Liver (C) Muscles (D) Kidneys