Description : Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) ozone and methane x) nitrous oxide and sulfur dioxide y) methane and carbon dioxide z) ozone and carbon monoxide
Last Answer : ANSWER: Y -- METHANE AND CARBON DIOXIDE
Description : Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities? w) oxygen and hydrogen x) ozone and methane y) nitrous oxide and sulfur dioxide z) methane and carbon dioxide e) ozone and carbon monoxide
Last Answer : ANSWER: Z -- METHANE AND CARBON DIOXIDE
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 : Which of the following atmospheric gases constitute greenhouse gases? a. Carbon dioxide b. Nitrogen c. Nitrous oxide d. Water vapour Select the correct answer using the codes given below : (1) a, c and d (2) a and d (3) a and c (4) a, b and d
Last Answer : a, c and d
Description : Acid rain is due to air pollution by - (1) Carbon dioxide (2) Carbon monoxide (3) Methane (4) Nitrous oxide and Sulfur dioxide
Last Answer : (4) Nitrous oxide and Sulfur dioxide Explanation: The main chemicals in air pollution that create acid rain are sulfur dioxide (SO2) and Nitrous oxide (N2O).
Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel
Last Answer : ANSWER: Z -- CHROMIUM AND NICKEL
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
Description : Nitrogen oxidation (nitrification)refers to the A- conversion of ammonium ions into nitrates through the activities of certain bacteria B- changing of atmospheric nitrogen (N2) to nitrogen compounds C- sulfur is oxidized to the sulfate form through Thiobacillusbacteria D- none of the above
Last Answer : conversion of ammonium ions into nitrates through the activities of certain bacteria
Description : (2) oxides of nitrogen and sulphur Explanation: Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides, which react with the water molecules in the atmosphere to produce acids.
Last Answer : Neuron is - (1) Fundamental unit of energy (2) Particle released in radioactive emission (3) Antiparbcle of neutron (4) Fundamental unit of nervous system
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.
Description : Which of the following does not pollute the air? A. Nitrogen Dioxide (Answer) B. Sulfur dioxide C. Carbon dioxide D. none of these
Last Answer : A. Nitrogen Dioxide (Answer)
Description : The principal volcanic gas (in terms of quantity) is: w) carbon dioxide x) nitrogen dioxide y) sulfur dioxide z) steam (H2O)
Last Answer : ANSWER: Z -- STEAM (H2O)
Description : Which of the following gases is given off in the acid test of a carbonate mineral? w) chlorine x) nitrogen y) carbon dioxide z) sulfur dioxide
Last Answer : ANSWER: Y -- CARBON DIOXIDE
Description : During smelting process, the combination of fuel in the furnace (A) Forms carbon dioxide (B) Carbon dioxide with carbon forms carbon mono-oxide (C) Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2 (D) All the above
Last Answer : Answer: Option D
Description : Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue-green alga which fixes ... iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv).
Last Answer : (d) (i), (ii) and (iv)
Description : Pick out the wrong statement. (A) Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water (B) Apatite is the principal material present in ... fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound fo
Last Answer : (C) Urea is more hygroscopic than ammonium nitrate
Description : The 'Greenhouse effect' is mainly due to increase in atmospheric – (1) Ozone (2) Nitrogen (3) Sulphur dioxide (4) Carbon dioxide
Last Answer : (4) Carbon dioxide Explanation: Carbon dioxide is the primary greenhouse gas that is contributing to recent climate change, 72% of the totally emitted greenhouse gases is carbon dioxide (CO2), 18% Methane ... (NOx). Carbon dioxide emissions therefore are the most important ca s e of global warming.
Description : Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. (A) Hydrocarbons (B) Hydrogen fluoride (C) Hydrogen sulphides (D) Nitrogen dioxide
Last Answer : (B) Hydrogen fluoride
Description : Higher concentration of nitrogen dioxide in atmospheric air causes (A) Cancer (B) Bronchitis (C) Asphyxiation (D) Corrosion
Last Answer : (B) Bronchitis
Description : “Azotobacter” bacteria is known for biological fixation of which atmospheric gas? a. A Oxygen b. B Nitrogen c. C Carbon Dioxide d. D Helium
Last Answer : b. B Nitrogen
Description : The ‘Greenhouse effect’ is mainly due to increase in atmospheric (1) Ozone (2) Nitrogen (3) Sulphur dioxide (4) Carbon dioxide
Last Answer : Carbon dioxide
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.
Description : Transboundary pollution (or) Acid rain is caused by – (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide
Last Answer : (4) Nitrogen oxide and sulphur dioxide Explanation: Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions ( ... dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
Description : Acid rain is caused by, the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbon monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide
Last Answer : (1) carbon dioxide and nitrogen
Description : Acid rain is caused by the pollution of environment by - (1) carbon dioxide and nitrogen (2) carbón monoxide and carbon dioxide (3) ozone and carbon dioxide (4) nitrous oxide and sulphur dioxide
Last Answer : (4) nitrous oxide and sulphur dioxide
Description : Acid rain is caused by the pollution of environment by – (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen
Last Answer : (3) Nitrous oxide and Sulphur dioxide Explanation: Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances ... acidic pollutants, known as acid rain. Human activities are the main cause of acid rain.
Description : Which gas is used in fire extinguishers? (1) Carbon dioxide (2) Nitrogen oxide (3) Carbon monoxide (4) Sulpher dioxide
Last Answer : (1) Carbon dioxide Explanation: Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire.
Description : The pair of compounds used as anesthetic in medicines – (1) Ether, Ammonia (2) Nitrous oxide, Chloroform (3) Chloroform, Nitrogen dioxide (4) Nitrogen dioxide, ether
Last Answer : (2) Nitrous oxide, Chloroform Explanation: Nitrous oxide is one of the more well-known anesthetic gases, and has been in use for around 200 years. Unlike some other anesthetics, this compound ... than ether. Its use as an anaesthetic decreased with increased experience and knowledge of its dangers.
Description : Burning pyrites ore gives out – (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas
Last Answer : (2) Sulphur dioxide gas Explanation: The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS9. Pyrite remains in commercial use for the production of sulfur dioxide, for use in such applications as the paper industry, and in the manufacture of sulfuric acid.
Description : Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide
Last Answer : (3) Carbon dioxide Explanation: Carbon dioxide is present under pressure in soft drinks. Carbon dioxide adds that special sparkle and bite to the beverage and also acts as a mild preservative. Carbon ... for soft drinks because it is inert, non-toxic, and relatively inexpensive and easy to liquefy.
Description : The chemical name of “laughing gas” is - (1) Nitric oxide (2) Nitrogen dioxide (3) Nitrogen pentoxide (4) Nitrous oxide
Last Answer : (4) Nitrous oxide Explanation: Nitrous oxide, commonly known as laughing gas, is a chemical compound with the formula N2O. It is used in surgery and dentistry for its anesthetic and analgesic effects ... of inhaling it, a property that has led to its recreational use as a dissociative anesthetic.
Description : Commercial nitric acid is coloured because it contains dissolved – (1) Oxygen (2) Nitrous oxide (3) Nitrogen dioxide (4) Coloured impurities
Last Answer : (3) Nitrogen dioxide Explanation: Commercial nitric acid has a brown colour due to dissolved NO2. The procedure of bubbling dry air through warm commercial nitric acid, is to drive away the dissolved nitrogen dioxide so that the acid becomes colourless.
Description : The chemical name of Laughing gas is------? A. Nitric oxide B. Nitrogen dioxide C. Nitrogen pentoxide D. Nitrous oxide (Answer)
Last Answer : D. Nitrous oxide (Answer)
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 gas predominantly responsible for global warming is (1) Carbon dioxide (2) Carbon monoxide (3) Nitrous oxide (4) Nitrogen peroxide
Last Answer : (1) Carbon dioxide
Description : Which of the following nitrogen-containing compounds is most readily used by plants? w) nitrogen dioxide x) ammonia y) nitrous oxide z) nitrate
Last Answer : ANSWER: Z -- NITRATE
Description : The most serious air pollutant causing health hazard is (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide
Last Answer : Sulphur dioxide
Description : Transboundary pollution (or) Acid rain is caused by : (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide
Last Answer : Nitrogen oxide and sulphur dioxide
Description : Which of the process is known as nitrification? (1) Reaction of Nitrogen Monoxide with oxygen to form nitric acid (2) Reaction of nitrogen dioxide with water to form nitric acid (3) Conversion of ammonia to nitrites (4) Conversion of nitrite to nitric oxide
Last Answer : Conversion of ammonia to nitrites
Description : Acid rain is caused by the pollution of environment by (1) Carbon monoxide and Carbon dioxide (2) Ozone and Carbon dioxide (3) Nitrous oxide and Sulphur dioxide (4) Carbon dioxide and Nitrogen
Last Answer : Actually Yes it is The place with low humidity with the salt mixture in the air Like places which have coal Brun, High urban population with modern gas transportaion and near to the beach where ... Salt helps these gases to mix well and give acid rain Places like Vizag in Andhra Pradesh
Description : The pair of compounds used as anaesthetic in medicines : (1) Ether, Ammonia (2) Nitrous oxide, Chloroform (3) Chloroform, Nitrogen dioxide (4) Nitrogen dioxide, ether
Last Answer : Nitrous oxide, Chloroform
Description : Burning pyrites ore gives out (1) Carbon dioxide gas (2) Sulphur dioxide gas (3) Nitrogen dioxide gas (4) Nitric oxide gas
Last Answer : Sulphur dioxide gas
Description : The chemical name of “laughing gas’ is (1) Nitric oxide (2) Nitrogen dioxide (3) Nitrogen pentoxide (4) Nitrous oxide
Last Answer : Nitrous oxide
Description : Commercial nitric acid is coloured because it contains dissolved : (1) Oxygen (2) Nitrous oxide (3) Nitrogen dioxide (4) Coloured impurities
Last Answer : Nitrogen dioxide
Description : Which of the following GHGs has the longest atmospheric life time? a) CO2 b) CFC c) Sulfur Hexafluoride (SF6) d) perfluorocarbon (PFC)
Last Answer : d) perfluorocarbon (PFC)
Description : Do power plants use specialized scrubbers o remove sulfur oxide gases?
Last Answer : Need answer
Description : Which of the following is the primary reason for adding calcium carbonate to the reduction process of iron oxide ores ? The calcium carbonate: w) acts as an oxidizing agent x) removes silicate waste products y) acts as a reducing agent z) removes sulfur waste products
Last Answer : ANSWER: X -- REMOVES SILICATE WASTE PRODUCTS