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

1 Answer

Answer :

Answer: Option D

Related questions

Description : _______ is highly poisonous gas produced as a result of incomplete combustion. a) oxygen b)carbon dioxide c)carbon mono oxide d)soot

Last Answer : c)carbon mono oxide

Description : ________ present in air helps in combustion of fuel. a) oxygen b)nitrogen c)carbon-di-oxide d)carbon –mono-oxide

Last Answer : a) oxygen

Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.

Last Answer : Combustion of fossil fuel

Description : A uranium nucleus `.^(235)U` liberates 200 MeV per fission 1.5 kg of uranium reacts during explosion of a uranium bomb. What is the mass of an equival

Last Answer : A uranium nucleus `.^(235)U` liberates 200 MeV per fission 1.5 kg of uranium reacts during explosion of a uranium ... TNT is `4.1 xx 10^(6) J//kg` ?

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 : A compound reacts with sodium and liberates hydrogen and on oxidation gives ketone. The formula of the compound could be

Last Answer : A compound reacts with sodium and liberates hydrogen and on oxidation gives ketone. The formula of the compound could ... `CH_(3)CH_(2)CH_(2)CH_(2)OH`

Description : What does TCM stand for in medical terms? A. Techno Circuit Module B. Traditional Chinese medicine (Answer) C. Tetra Carbon Mono oxide

Last Answer : B. Traditional Chinese medicine (Answer)

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 : Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene? (A) AgO (B) Al2O3 (C) ZnCl2 (D) Fe2O3

Last Answer : (A) AgO

Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Description : Which of the following processes doesn't account for an increase in atmospheric CO2 (carbon dioxide) levels? w) deforestation x) photosynthetic processes y) plant respiration z) fossil fuel combustion

Last Answer : ANSWER: X -- PHOTOSYNTHETIC PROCESSES

Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different

Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different

Description : The main reducing agent in iron blast furnace is(A) Carbon dioxide (B) Carbon monoxide (C) Oxygen (D) Air

Last Answer : Option B

Description : Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Last Answer : It liberates nitrogen on treatment with ice-cold nitrous acid

Description : Hydrofluoric acid is not kept in glass bottles because it reacts with - (1) visible light (2) silicon dioxide of glass (3) aluminium oxide of glass (4) sodium oxide of glass

Last Answer : (2) silicon dioxide of glass

Description : Quick lime (A) Generates heat when added to water (B) Reacts with carbon dioxide (C) May be used for white-washing (D) All the above

Last Answer : Answer: Option D

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 is the main reducing agent during production of iron from iron ore in a blast furnace? (A) C (B) CO (C) CO2 (D) H2

Last Answer : (B) CO

Description : Uranium is recovered from its ore (pitchblende) by (A) Froth floatation technique (B) Leaching with sulphuric acid (C) Smelting in a furnace (D) Dissolving in water

Last Answer : (B) Leaching with sulphuric acid

Description : In practical operation of any furnace, zero oxygen percentage or theoretical CO2 percentage in flue gas is rarely achieved, because of (A) Use of non-preheated combustion air (B) Use of pulverised solid ... of fuel & air and infiltration of air (D) Use of excessive positive draft in the furnace

Last Answer : (C) Imperfect mixing of fuel & air and infiltration of air

Description : Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases. (A) CO content (B) Dew point (C) CO2 content (D) O2 content

Last Answer : (A) CO content

Description : the combination of sulfur dioxide, nitrogen oxide, and atmospheric moisture creates -General Knowledge

Last Answer : The combination of sulfur dioxide, nitrogen oxide, and atmospheric moisture creates Acid rain.

Description : In which of the following states maximum iron ore is found ? (1) FeCO3 (2) Fe2O3 (3) Fe3O4 (4) FeS2

Last Answer : Fe2O3

Description : At which temperature direct reduction of Fe2O3 by carbon is possible ?

Last Answer : Ans. Above 1123 K, carbon can reduce Fe2O3 

Description : Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Last Answer : Answer: Option B

Description : If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called (A) Bessemer pig (B) Grey or foundry pig (C) White or forge pig (D) Mottled pig

Last Answer : Answer: Option C

Description : Pig iron is manufactured from the ores by (A) Dressing (B) Calcination and roasting (C) Smelting (D) All the above

Last Answer : Answer: Option D

Description : During pudding (A) Molten metal is kept clear of the fuel (B) Carbon is converted into carbonic acid gas (C) Silicon forms a slag (D) All the above

Last Answer : Answer: Option D

Description : Acid Reacts with metals and released............gas. (a) Carbon di oxide (b) Water (c) Hydrogen (d) None

Last Answer : (c) Hydrogen

Description : Calcium carbonate decomposes into calcium oxide & carbon dioxide Her results:Mass of calcium carbonate before heating = 2.00 g Mass of calcium oxide left after heating = 1.12 g work out the mass of carbon dioxide released during the decomposition?

Last Answer : I am not sure of the answer so can someone help me pls

Description : Is the correct equation for the reaction below. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor?

Last Answer : Yes, it is correct.C3H8 + 5 O2 = 3 CO2 + 4 H2O

Description : What is. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor.?

Last Answer : Propane gas is CH3CH2CH3Oxygen gas is O2Carbon dioxide gas is CO2Water vapor is H2OCH3CH2CH3(g) + 5O2(g) ==> 3CO2(g) + 4H2O(g)

Description : What is. One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon-dioxide gas and four molecules of water vapor.?

Last Answer : Propane gas is CH3CH2CH3Oxygen gas is O2Carbon dioxide gas is CO2Water vapor is H2OCH3CH2CH3(g) + 5O2(g) ==> 3CO2(g) + 4H2O(g)

Description : Silver acetate reacts with Br2 to form methyl bromide, carbon dioxide, and AgBr. This is an example of (a) Wurtz reaction (b) Etard's reaction (c) Hunsdiecker reaction (d) Perkin reaction

Last Answer : Hunsdiecker reaction

Description : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron metallurgy)?

Last Answer : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron ... CO` D. `CO_(2)+C rarr 2CO`

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 : Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry

Last Answer : i hope it helped you

Description : when a carbonate reacts with an acid,it produces carbon dioxide gas. how can this reaction be used in our dairy life -Biology

Last Answer : answer:

Description : when a carbonate reacts with an acid,it produces carbon dioxide gas. how can this reaction be used in our dairy life -Biology

Last Answer : answer:

Description : When Calcium reacts with water it starts floating on top of water because A) bubbles of carbon dioxide formed stick to the surface of metal B) bubbles of hydrogen formed stick to the surface of metalC) Calcium is lighter than water D) None of the above

Last Answer : B) bubbles of hydrogen formed stick to the surface of metal

Description : The commonly used colour pigment in paints, is (A) Ambers (B) Carbon black (C) Iron oxide (D) All the above

Last Answer : Answer: Option D

Description : Pick up the correct statement from the following: (A) Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon (B) The edges of a finished wrought iron ... shortage (C) Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4) (D) All the above

Last Answer : Answer: Option D

Description : The carbon dioxide is transported via blood to lungs mostly (a) in combination with haemoglobin only (b) dissolved in blood plasma (c) in the form of bicarbonate ions (d) as carbamino-haemoglobin and as carbonic acid.

Last Answer : (c) in the form of bicarbonate ions

Description : Which of the following are responsible for the formation of photochemical smog ? 1. Light intensity 2. Ratio of hydrocarbons to nitric oxide 3. CO2 4. Hydrocarbon reactivity 5. SO2 (a) 1, 2, 3, 4 and 5 (b) 1, 2 and 4 only (c) 2, 3 and 4 only (d) 2, 3 and 5 only

Last Answer : (b) 1, 2 and 4 only

Description : What forms when iron gets wet and reacts with oxygen?

Last Answer : rust

Description : What forms when iron gets wet and reacts with oxygen?

Last Answer : rust

Description : Using the phase diagram for CO2, what phase is carbon dioxide in at 12 atm pressure and -40 C apex?

Last Answer : liquid

Description : Using the phase diagram for CO2, what phase is carbon dioxide in at 12 atm pressure and -40 C apex?

Last Answer : liquid

Description : Which of the following statement(s) is/are true concerning CO2 transfer in the lung? a. Carbon dioxide excretion is a direct function of alveolar ventilation b. Normally end tidal ... d. Positive pressure ventilation under normal airway pressures creates a significant end tidal PaCO2 gradient

Last Answer : Answer: a, b, c The amount of carbon dioxide excretion is directly related to alveolar ventilation. While oxygenation is a function of matching blood flow to alveoli, carbon dioxide excretion is ... high (over 30 cm H2O) and the compression volume is a significant component of each exhaled breath

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.